User:Bertrik Sikken
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| User info Bertrik Sikken | |
|---|---|
| Name | Bertrik Sikken |
| Nick | bertrik |
| Tagline | heb ik niet |
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 FrontDoorDisplay
- 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
- Experiment with an ESP8266 serial-wifi module, WiFiBat project plan:
- attach an ESP8266 to a migrating bat and program it to record a list of wifi APs every day, so the location over time can be determined from the AP-list (use Mozilla geolocation service to convert from AP-list to location), main challenge: keep weight and power consumption low.
- Create better algorithm for detecting heartbeat using this optical heart beat sensor: sample the analog signal at 100 Hz and do an autocorrelation to get a continuous estimate of the heart rate.
Laser cutting:
I would like to get more creative with the laser cutter, starting with cutting existing designs, for example:
- DONE! -> this trebuchet
- DONE! -> this catapult or the mini catapult
- a cool looking box with gears
- mini marble machine
- DONE! -> bee puzzle