CuVoodoo #009 – taming glouttonous lions



building an electronic cat repeller to guard the fridge:
My sneaky cat can open all doors, even the fridge door. No meat is safe any more. To prevent that I built a cat repeller using an Atmel ATmega328P Arduino Nano 3.0 board. An HC-SR501 PIR motion detector checks if the cat is nearby. Then an E18-D80NK range detector verifies if the cat is in front of the fridge. If this is the case a ~24 kHz PWM signal will generate an ultrasound using a piezoelectric diaphragm, encouraging the cat to leave the premisses. If it still opens the fridge, a human audible alarm will sound until it is closed.

documentation source files watch on other devices (youtube)


Published: 2015-04-07 by King Kévin

CuVoodoo #008 – attaching sunbeams to the ceilling



LED strip based light installation:
Using LED strips, an ATX power supply, and a custom board I created a nice and bright light installation for my room.

documentation source files watch on other devices (youtube)

additional links:


Published: 2015-03-08 by King Kévin

CuVoodoo #007 – building an infrared cock grenade



Using infra-red LEDs I re-implemented the LaserTag protocol MilesTag v2. With that I made an LaserTag grenade by putting a custom board placed in a cock shell.

documentation source files watch on other devices (youtube)


Published: 2015-02-10 by King Kévin

CuVoodoo #006 – connect a bathroom scale to the computer



I found out the weight measured by a Korona KFW-55 bathroom scale is encoded using PWM. Using a micro-controlled I can interpret this value and send it to a computer over USB and bluetooth.

documentation source files watch on other devices (youtube)

about strain gauges:

  • a short video about strain gauges: nerdkits
  • more details about how different strain gauges: stackexchange

similar projects:


Published: 2015-01-29 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

CuVoodoo #003 – cash register teardown



a teardown of a Samsung SER6540II electronic cash register

documentation watch on other devices (youtube)

additional links:


Published: 2014-11-29 by King Kévin

CuVoodoo #002 – osmotoserial



The osmotoserial is a small board to restart automatically and communicate with osmocom baseband phones Motorola C1xx

documentation source files watch on other devices (youtube)

additional links:


Published: 2014-11-22 by King Kévin

CuVoodoo #001 – how to identify electronic components



some tricks to identify electronic components on printed circuit board assemblies

source files watch on other devices (youtube)

The IC logos I collected are available here.

additional links:


Published: 2014-09-09 by King Kévin

CuVoodoo #000 – introduction



a small introduction video to this new podcast

watch on other devices (youtube)


Published: 2014-09-03 by King Kévin