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...noise in the earpiece that disappears when you probe either a low or high signal, and the yellow LED then turns off too. Connecting it via some impedance to

...sty pulses a diode detector is used. The next NAND buffers and inverts the signal. Here we have a nice continuous HIGH level when the soil is too dry and a L

Sending power signal to pin: 6

=== Bat box busy signal === ...sensor, to process the signal and present it as a USB audio device (stereo signal contains I and Q parts). See [[RadarOnAStick]].

...formation about the particular gateway that received your signal, received signal strength and with what settings (bandwidth, spreading factor) your packet w ...feature (which is AFAIK not used in LoraWAN), I guess you can ignore that signal.

...ed that the LM386 speaker driver used to buffer/amplify the Cassette input signal was completely unnecessary. All Barrel and jack plug connectors were replac ...h to another game to load, and J3 is to start playback. J4 is the cassette signal output, internally connected to the EAR input jack. J5 is not used in a Spe

...across the diode, which is then amplified by a jfet and a dual opamp. This signal is fed into the comparator, triggering an LED and causing the buzzer to emi

...imal bat call recorder: just add an analog preamplifier for the ultrasonic signal (+ a lot of software!).

...ach millisecond by summing the squared amplitude of the high-pass filtered signal over this millisecond. Perhaps we can also just calculate variance here and

A nodemcu (ESP8266) reads the fan state signal and forwards it over WiFi to the revspace MQTT stream on topic revspace/int

# A USB audio card to create the analog ultrasonic signal # An amplifier to amplify the ultrasonic signal

...te, the device transmits periodic beacon packets. You can use the received signal strength of these to find how to get closer to the device.

! Pin !! Signal Firmware measures only a part of the response signal: 180..980 ms interval in 10ms steps. It integrates 180..680 ms interval and

...day) it wakes up, takes a reading of all WiFi stations in range and their signal strength. It stores these in internal memory. ...a level-like signal (low if the alarm has triggered). You cannot tie this signal to the ESP reset pin because it would keep the ESP in reset indefinitely. T

:2014-??-??: The LNA4ALL amplifying the discone signal broke down :( ...give a slightly better signal-noise ratio and allow us to split the radio signal out to several receivers so we can capture several kinds of signals at once

...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 fr

...estimated total inductance of about 1 uH, it is center-tapped to the TVSS signal.

...by a laser beam. The scatter patterns are picked up by a photo-diode which signal is amplified and then fed to a micro-controller. The micro-controller inter

...ay 4.98V then I checked reset it was high as it should. I tested the clock signal,with an oscilloscope and it ran. saw 3.25MHz on the CPU, so no problem ther ...ut of U11A pin 3, and still I saw no problems, then I tried to measure the signal on 88, and when I put my scope probe on R49 suddenly the screen turned whit

...ifi throughput is good, even at the other end of our space, so in terms of signal and bandwidth it easily outperforms the access point that we already had.