User:Bertrik Sikken: Difference between revisions

Revision as of 09:30, 15 September 2014

You can reach me at bertrik@sikken.nl or bertrik@gmail.com

Studied Electrical Engineering at Twente University.

Main interests:

reverse-engineering things (USB stuff, mp3 players), working on http://rockbox.org
studying bats and making electronics for recording/listening to bat sounds
software-defined radio

New project ideas:

Use two old satellite dishes to allow speech to be transferred over some distance
- Figure out focal point
- Create some kind of dish mount
Create a RFM69HW TNC, based on code by flok
- Remove 'flok' framing, make it comply with KISS protocol
- Use 'infinite' package length mode to send typical TCP/IP frames (1500 bytes)
Create a 'HabAlert' android app, see HabAlertApp
add opus audio codec support to squeezeboxserver and/or squeezelite
- an opus web radio stream already seems to be redirected to the client, but squeezelite crashes on it
create code for remote control of my ZwaaiLicht
- implement wireless protocol for the NOMZ message ("\x4NOMZ") on address 0x66996699L (no ack)
- possibly implement a more capable protocol on a different pipe (with ack, learn about extra pipes on NRF24L01+)
- possibly split control of the light and the motor
create a voordeur display
- clearly indicates the RevSpace door bell
- show short scrolling text messages, e.g. to food delivery people
- remote control over NRF24, e.g. enable/display the display of messages, set the text to be displayed

@@ Line 14: / Line 14: @@
 * studying bats and making electronics for recording/listening to bat sounds
 * software-defined radio
-Old project ideas:
-* do cool stuff with NRF24L01+ modules, e.g. connect one to the SPI bus of a Raspberry Pi
-* experiment with [http://mqtt.org MQTT], a light-weight publish/subscribe framework for telemetry data
-* put the things above together in some kind of home automation project
-* build a colinear antenna out of RG-6 coaxial cable for the 70cm band (for receiving high-altitude balloons)
-* more radio stuff with the ham-it-up
-* implement dominoex/thor radio mode for a balloon payload, perhaps build a light-weight reusable library
-* come up with an algorithm to determine position/direction of bats as they pass a set of ultrasonic microphones, see [[StereoBatRecorder]]
-** I've tried direct correlation, works but sometimes gives errors on bat calls with little frequency sweep
-** Planning to try correlation of only the amplitude data (derived with a Hilbert transform)
@@ Line 32: / Line 20: @@
 ** Figure out focal point
 ** Create some kind of dish mount
-* Reverse engineer the digital oscilloscope at revspace
-** Figure out screenshot image format
-** Try to find if there are other commands than the "send screenshot" command
-* <strike>More LedBanner audio visualisations</strike>
 * Create a RFM69HW TNC, based on code by flok
 ** Remove 'flok' framing, make it comply with KISS protocol