The HDMI firewall prevents devices from hacking HDMI equipment, and vice-versa
Published: 2022-08-08 by King Kévin
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.
Integrated Circuit IDendifier (ICID) search engine
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.
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.
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.
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.