Tag Archives: radio

CuVoodoo #017 – listening to a radio clock tower


adding DCF77 time synchronisation to the LED clock:
By adding a DCF77 receiver to the LED clock presented in episode 16, the clock can automatically update the time (in Europe) in order to compensate for the RTC drift. I've also used the opportunity to find out how the "analog" clock works.

documentation source files watch on other devices (youtube)

Published: 2016-08-01 by King Kévin

CuVoodoo #014 – the spark counter


my custom wireless electricity meter:
While renewing my distribution board the land lord decided to remove the electricity meter. Now I can't note how much electricity I am using. So I decided to build and install my own electricity meter: the spark counter. Using a cheap power meter (i.e. peacefair PZEM-004), a microcontroller (i.e. Arduino Nano 3.0), radio transceivers (i.e. nordic nRF24L01+), a single board computer (i.e. Raspberry Pi), and some storage and visualization tools (i.e. influxDB and grafana) I am now able to measure, log, and monitor my electricity consumption.

documentation source files watch on other devices (youtube)

I also briefly describe how to use a Saleae Logic clone logic analyzer with PulseView and sigrok.

warning: the electricity meter I am presenting will only work for 1 phase 2 wires power distribution systems. I have a 3 phases 4 wires system and I am doing it wrong.


Published: 2015-10-29 by King Kévin

CuVoodoo #005 – MegaCode gate radio control receiver reverse engineering


MegaCode is a system provided by Linear LLC for controlling gates. This time I looked a the receiver. With my firmware it is possible to efficiently record the individual codes of other remote controls.

documentation source files watch on other devices (youtube)

additional links:


Published: 2014-12-29 by King Kévin

CuVoodoo #004 – MegaCode gate radio control transmitter reverse engineering


MegaCode is a system provided by Linear LLC for controlling gates. Using software defined radio I could record and decode the radio transmission of the remote. And thanks to my firmware this can be re-transmitted. With it is is possible to clone MegaCode remote controls.

documentation source files watch on other devices (youtube)

additional links:


Published: 2014-12-29 by King Kévin