CuVoodoo gadget: HDMI firewall (v2)



The HDMI firewall prevents devices from hacking HDMI equipment, and vice-versa

documentation get gadget source files watch on other devices (youtube)


Published: 2022-08-08 by King Kévin

CuVoodoo gadget: USB-A to USB-C cable tester (v1)



The USB-A to USB-C (aka. USB-AC) cable tester identifies which features a USB-A to USB-C cable supports.

documentation get gadget source files watch on other devices (youtube)


Published: 2022-08-05 by King Kévin

CuVoodoo gadget: USB bug detector (v1)



The USB bug detector identifies USB type-A cables (or devices) with integrated circuits.

documentation get gadget source files watch on other devices (youtube)


Published: 2022-07-09 by King Kévin

CuVoodoo gadget: USB-C cable tester (v2)



The USB-C cable tester shows which features a USB-C to USB-C cable supports.

documentation get gadget get gadget source files watch on other devices (youtube)


Published: 2022-07-08 by King Kévin

CuVoodoo gadget: micro-USB cable tester (v2)



The micro-USB cable tester verifies if a USB 2.0 cable with micro-B plug can be used to transfer data, or just for charging.

documentation get gadget source files watch on other devices (youtube)


Published: 2022-07-07 by King Kévin

CuVoodoo #034 – IC composite



pinout-based identification:
Some chips have their top marking removed. They can still be identified based on their pinout. To help me with that, I created the Integrated Circuit IDendifier (ICID) database and search engine.

documentation watch on other devices (youtube)

Integrated Circuit IDendifier (ICID) search engine


Published: 2022-03-21 by King Kévin

CuVoodoo #033 – power (X)OR knowledge



identifying micro-USB cables:
Have you ever plugged in a device using a micro-USB cable and wondered why you can't see it on your computer? We will see the different types of USB cables, and why this can happen. And to avoid using the wrong one, I build a gadget identifying micro-USB cables.

documentation get gadget source files watch on other devices (youtube)


Published: 2021-09-15 by King Kévin

CuVoodoo #032 – You Got Parcel



building a remote postbox status indicator:
I wanted to be notified when a parcel is put into my post box. For that I used LoRa radio modules with direct communication. We will see how to make the over-the-air transmission robust to cope with the distance and walls in between.

source files watch on other devices (youtube)


Published: 2021-08-06 by King Kévin

CuVoodoo #031 – controller impersonation



identifying STM32F103C clones:
The STM32F103C micro-controller has become so popular that you can find plenty of pin and code compatible clones. The issue is when they pretend to be genuine STM32. We will see how to identify counterfeit STM32F103C, using the top marking, decapsulating the silicon die, but also from inside with a firmware which will check the value and behavior of some registers.

source files watch on other devices (youtube)


Published: 2021-02-27 by King Kévin

CuVoodoo #030 – audio is killing the music



building a sound level enforcer:
for a private club I built a sound level enforcer. if the DJ is playing music too loud, the device will shut off the audio output. for that I reversed a GM1351 sound level meter to extract the measurements from the LCD interface, send them over Bluetooth to the enforcer, which will cut the power to the main audio amplifier if a set threshold is exceeded for a couple a seconds.

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Published: 2021-01-28 by King Kévin