The PD blocker is a USB-C Power Delivery firewall. It provides over-voltage protection and prevents power delivery communication in order to protect your device.
Published: 2022-11-15 by King Kévin
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.
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.
building a defusing game:
For the bachelor party of a friend, I created a defusing game. Using the knowledge about his future wife, he was able to cut the right wires and disarm the bomb. This then turned on a torch which grilled a piece of meat, instead of injecting poison into it. We will learn how to drive DC and stepper motors.