https://revspace.nl/wiki/index.php?action=history&feed=atom&title=Radio_controlled_bicycle_back_light 2026-05-13T11:27:08Z Revision history for this page on the wiki MediaWiki 1.43.6 https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=20626&oldid=prev 2018-12-18T23:02:53Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:02, 18 December 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l3">Line 3:</td> <td colspan="2" class="diff-lineno">Line 3:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   |Picture=Achterlicht.jpg</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   |Picture=Achterlicht.jpg</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   |Omschrijving=A battery powered bicycle back light that can be used to find your bike.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   |Omschrijving=A battery powered bicycle back light that can be used to find your bike.</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>   |Status=<del style="font-weight: bold; text-decoration: none;">In progress</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>   |Status=<ins style="font-weight: bold; text-decoration: none;">Completed</ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   |Contact=Mahjongg</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   |Contact=Mahjongg</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   }}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   }}</div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18887&oldid=prev 2018-06-19T16:36:29Z

<p><span class="autocomment">June, 5, 2018, Finished assembly with the last missing parts</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:36, 19 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l69">Line 69:</td> <td colspan="2" class="diff-lineno">Line 69:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>According to the PTC datasheet, the oscillating frequency of the 2270 decoder must be 2 to 30 times the frequency of the 2260 encoder, so I have to measure the frequency the encoder uses. The decoded signal will also be better when the encoder isn&#039;t running too fast, so that the bit-period of the encoded signal will be relatively long (slow), but seeing that a typical PT2262 encoder frequency is between 6 and 55KHz (at 3V) it seems the frequency is already quite low (note that a PT2260 encoder typically runs at a much higher frequency, from 100 to 500 MHz).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>According to the PTC datasheet, the oscillating frequency of the 2270 decoder must be 2 to 30 times the frequency of the 2260 encoder, so I have to measure the frequency the encoder uses. The decoded signal will also be better when the encoder isn&#039;t running too fast, so that the bit-period of the encoded signal will be relatively long (slow), but seeing that a typical PT2262 encoder frequency is between 6 and 55KHz (at 3V) it seems the frequency is already quite low (note that a PT2260 encoder typically runs at a much higher frequency, from 100 to 500 MHz).</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Note that the Princeton Technology Corp. PT2262 encoder and PT2270 decoder are obviously a clone of the Holtek original (HT12D and HT12A), it might be wise to read the Holtek datasheets too.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Note that the Princeton Technology Corp. PT2262 encoder and PT2270 decoder are obviously a clone of the Holtek original (HT12D and HT12A), it might be wise to read the Holtek datasheets too.</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== Patches so far ==</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">R17 was 1K now 10K, reason LED's blinking too fast.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">R19 was 10M, now 1M, reason after trigger LED/beeping did not stop.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Buzzer on J2 no more directly on PCB, but through a short piece of twisted wire, after that the device resetted when buzzer sounded, due to too high start-up power consumption, and the induction of the lead, fixed by adding a 10uF elco in series, also improving the sound.</ins></div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18880&oldid=prev 2018-06-18T18:08:23Z

<p><span class="autocomment">June, 5, 2018, Finished assembly with the last missing parts</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 18:08, 18 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l68">Line 68:</td> <td colspan="2" class="diff-lineno">Line 68:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the PT2070-4 chip. at one time I thought the clock the chip was running at was wrong, and after measuring the original, I discovered it was generating a 27KHz clock, while mine were clocking at some 16KHz, but after checking the resistance of R18, I had made no mistake, and both were using 820K</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the PT2070-4 chip. at one time I thought the clock the chip was running at was wrong, and after measuring the original, I discovered it was generating a 27KHz clock, while mine were clocking at some 16KHz, but after checking the resistance of R18, I had made no mistake, and both were using 820K</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>According to the PTC datasheet, the oscillating frequency of the 2270 decoder must be 2 to 30 times the frequency of the 2260 encoder, so I have to measure the frequency the encoder uses. The decoded signal will also be better when the encoder isn&#039;t running too fast, so that the bit-period of the encoded signal will be relatively long (slow), but seeing that a typical PT2262 encoder frequency is between 6 and 55KHz (at 3V) it seems the frequency is already quite low (note that a PT2260 encoder typically runs at a much higher frequency, from 100 to 500 MHz).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>According to the PTC datasheet, the oscillating frequency of the 2270 decoder must be 2 to 30 times the frequency of the 2260 encoder, so I have to measure the frequency the encoder uses. The decoded signal will also be better when the encoder isn&#039;t running too fast, so that the bit-period of the encoded signal will be relatively long (slow), but seeing that a typical PT2262 encoder frequency is between 6 and 55KHz (at 3V) it seems the frequency is already quite low (note that a PT2260 encoder typically runs at a much higher frequency, from 100 to 500 MHz).</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Note that the Princeton Technology Corp. PT2262 encoder and PT2270 decoder are obviously a clone of the Holtek original (HT12D and HT12A), it might be wise to read the Holtek datasheets too.</ins></div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18879&oldid=prev 2018-06-18T17:57:16Z

<p><span class="autocomment">June, 5, 2018, Finished assembly with the last missing parts</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:57, 18 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l67">Line 67:</td> <td colspan="2" class="diff-lineno">Line 67:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the PT2070-4 chip. at one time I thought the clock the chip was running at was wrong, and after measuring the original, I discovered it was generating a 27KHz clock, while mine were clocking at some 16KHz, but after checking the resistance of R18, I had made no mistake, and both were using 820K</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the PT2070-4 chip. at one time I thought the clock the chip was running at was wrong, and after measuring the original, I discovered it was generating a 27KHz clock, while mine were clocking at some 16KHz, but after checking the resistance of R18, I had made no mistake, and both were using 820K</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">According to the PTC datasheet, the oscillating frequency of the 2270 decoder must be 2 to 30 times the frequency of the 2260 encoder, so I have to measure the frequency the encoder uses. The decoded signal will also be better when the encoder isn't running too fast, so that the bit-period of the encoded signal will be relatively long (slow), but seeing that a typical PT2262 encoder frequency is between 6 and 55KHz (at 3V) it seems the frequency is already quite low (note that a PT2260 encoder typically runs at a much higher frequency, from 100 to 500 MHz).</ins></div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18837&oldid=prev 2018-06-14T18:02:57Z

<p><span class="autocomment">June, 5, 2018, Finished assembly with the last missing parts</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 18:02, 14 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l66">Line 66:</td> <td colspan="2" class="diff-lineno">Line 66:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>With R19, and C14 the very last parts were soldered to the two test-boards. I lowered R19 to 1M from 10M, as it seemed that after filing C14 the device never stopped blinking and making noise. With R19 as 1M the device, after filling C14 with 3 Volt, blinked and made sound for some 30 seconds, near the end the blinking became more rapid, then so rapid that you could not see it blinking, and ending with slowly going out. I put the buzzer on a small end of twisted wire, so I could also connect its + end to the output without blocking the screw, and so that I could put a 10uF elco in series with it, which made the sound a bit louder, the beep warbles a bit in the rhythm of the blinking.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>With R19, and C14 the very last parts were soldered to the two test-boards. I lowered R19 to 1M from 10M, as it seemed that after filing C14 the device never stopped blinking and making noise. With R19 as 1M the device, after filling C14 with 3 Volt, blinked and made sound for some 30 seconds, near the end the blinking became more rapid, then so rapid that you could not see it blinking, and ending with slowly going out. I put the buzzer on a small end of twisted wire, so I could also connect its + end to the output without blocking the screw, and so that I could put a 10uF elco in series with it, which made the sound a bit louder, the beep warbles a bit in the rhythm of the blinking.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the PT2070-4 chip. at one time I thought the clock the chip was running at was wrong, and after measuring the original, I discovered it was generating a 27KHz clock, while mine were clocking at some 16KHz, but after checking the resistance<del style="font-weight: bold; text-decoration: none;">.</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the PT2070-4 chip. at one time I thought the clock the chip was running at was wrong, and after measuring the original, I discovered it was generating a 27KHz clock, while mine were clocking at some 16KHz, but after checking the resistance <ins style="font-weight: bold; text-decoration: none;">of R18, I had made no mistake, and both were using 820K</ins></div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18836&oldid=prev 2018-06-14T18:00:57Z

<p><span class="autocomment">June, 5, 2018, Finished assembly with the last missing parts</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 18:00, 14 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l66">Line 66:</td> <td colspan="2" class="diff-lineno">Line 66:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>With R19, and C14 the very last parts were soldered to the two test-boards. I lowered R19 to 1M from 10M, as it seemed that after filing C14 the device never stopped blinking and making noise. With R19 as 1M the device, after filling C14 with 3 Volt, blinked and made sound for some 30 seconds, near the end the blinking became more rapid, then so rapid that you could not see it blinking, and ending with slowly going out. I put the buzzer on a small end of twisted wire, so I could also connect its + end to the output without blocking the screw, and so that I could put a 10uF elco in series with it, which made the sound a bit louder, the beep warbles a bit in the rhythm of the blinking.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>With R19, and C14 the very last parts were soldered to the two test-boards. I lowered R19 to 1M from 10M, as it seemed that after filing C14 the device never stopped blinking and making noise. With R19 as 1M the device, after filling C14 with 3 Volt, blinked and made sound for some 30 seconds, near the end the blinking became more rapid, then so rapid that you could not see it blinking, and ending with slowly going out. I put the buzzer on a small end of twisted wire, so I could also connect its + end to the output without blocking the screw, and so that I could put a 10uF elco in series with it, which made the sound a bit louder, the beep warbles a bit in the rhythm of the blinking.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by the <ins style="font-weight: bold; text-decoration: none;">PT2070-4 chip. at one time I thought the clock the chip was running at was wrong, and after measuring the original, I discovered it was generating a 27KHz clock, while mine were clocking at some 16KHz, but after checking the resistance.</ins></div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18835&oldid=prev 2018-06-14T17:58:13Z

<p><span class="autocomment">June, 5, 2018, Finished assembly with the last missing parts</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:58, 14 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l64">Line 64:</td> <td colspan="2" class="diff-lineno">Line 64:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== June, 5, 2018, Finished assembly with the last missing parts ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== June, 5, 2018, Finished assembly with the last missing parts ==</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>With R19, and C14 the very last parts were soldered to the two test-boards. I lowered R19 to 1M from 10M, as it seemed that after filing C14 the device never stopped blinking and making noise. With R19 as 1M the device, after filling C14 with 3 Volt, blinked and made sound for some 30 seconds, near the end the blinking became more rapid, then so rapid that you could not see it blinking, and ending with slowly going out. I put the buzzer on a small end of twisted wire, so I could also connect its + end to the output without blocking the screw, and so that I could put a 10uF elco in series with it, which made the sound a bit louder, the beep warbles a bit in the <del style="font-weight: bold; text-decoration: none;">rithm </del>of the blinking.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>With R19, and C14 the very last parts were soldered to the two test-boards. I lowered R19 to 1M from 10M, as it seemed that after filing C14 the device never stopped blinking and making noise. With R19 as 1M the device, after filling C14 with 3 Volt, blinked and made sound for some 30 seconds, near the end the blinking became more rapid, then so rapid that you could not see it blinking, and ending with slowly going out. I put the buzzer on a small end of twisted wire, so I could also connect its + end to the output without blocking the screw, and so that I could put a 10uF elco in series with it, which made the sound a bit louder, the beep warbles a bit in the <ins style="font-weight: bold; text-decoration: none;">rhythm </ins>of the blinking.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding <ins style="font-weight: bold; text-decoration: none;">the key chain button very close I could see a steady repeatable pattern, of pulse trains, during the trimming the decoder once detected the correct patter, as the bicycle light went off, But afterwards I could not repeat this fact, even though I managed to get a visibly cleaner pattern, it was never recognized by </ins>the</div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18834&oldid=prev 2018-06-14T17:53:40Z

<p><span class="autocomment">June, 5, 2018, Finished assembly with the last missing parts</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:53, 14 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l64">Line 64:</td> <td colspan="2" class="diff-lineno">Line 64:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== June, 5, 2018, Finished assembly with the last missing parts ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== June, 5, 2018, Finished assembly with the last missing parts ==</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">With R19, and C14 the very last parts were soldered to the two test-boards. I lowered R19 to 1M from 10M, as it seemed that after filing C14 the device never stopped blinking and making noise. With R19 as 1M the device, after filling C14 with 3 Volt, blinked and made sound for some 30 seconds, near the end the blinking became more rapid, then so rapid that you could not see it blinking, and ending with slowly going out. I put the buzzer on a small end of twisted wire, so I could also connect its + end to the output without blocking the screw, and so that I could put a 10uF elco in series with it, which made the sound a bit louder, the beep warbles a bit in the rithm of the blinking.</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">As for the receiver, after attaching an oscilloscope to the pin 1 opamp output, I was able to adjust the trimcap, after extending the antenna, and holding the</ins></div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18833&oldid=prev 2018-06-14T17:44:50Z

<p><span class="autocomment">April 13, 2018, PCB ordered, parts are in</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:44, 14 June 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l62">Line 62:</td> <td colspan="2" class="diff-lineno">Line 62:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== April 13, 2018, PCB ordered, parts are in ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== April 13, 2018, PCB ordered, parts are in ==</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Today my nephew ordered a few PCB&#039;s, the parts for them were already ordered and have arrived. When the PCB&#039;s arrive (in seven working days) we can start assembling them.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Today my nephew ordered a few PCB&#039;s, the parts for them were already ordered and have arrived. When the PCB&#039;s arrive (in seven working days) we can start assembling them.</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== June, 5, 2018, Finished assembly with the last missing parts ==</ins></div></td></tr> </table>

Mahjongg https://revspace.nl/wiki/index.php?title=Radio_controlled_bicycle_back_light&diff=18221&oldid=prev 2018-04-18T14:44:18Z

<p><span class="autocomment">April 10, 2018, finished PCB</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en-GB"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:44, 18 April 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l59">Line 59:</td> <td colspan="2" class="diff-lineno">Line 59:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Found the problematic via&#039;s were not assigned to GND, so were not connected to the ground plane on the solderside. Not getting a warning about that is IMHO a bug in KiCad&#039;s design rule checks.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Found the problematic via&#039;s were not assigned to GND, so were not connected to the ground plane on the solderside. Not getting a warning about that is IMHO a bug in KiCad&#039;s design rule checks.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Fixed all layout problems (I think).</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Fixed all layout problems (I think).</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">== April 13, 2018, PCB ordered, parts are in ==</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Today my nephew ordered a few PCB's, the parts for them were already ordered and have arrived. When the PCB's arrive (in seven working days) we can start assembling them.</ins></div></td></tr> </table>

Mahjongg