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.
The USB-A to USB-C (aka. USB-AC) cable tester identifies which features a USB-A to USB-C cable supports.
The USB bug detector identifies USB type-A cables (or devices) with integrated circuits.
The USB-C cable tester shows which features a USB-C to USB-C cable supports.
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.
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.
reversing USB meter protocols for long term low DC power logging:
To figure out the energy budget provided by a solar panel for a weather station, I needed a device capable of measuring low DC voltages and currents over a long period of time.
For that I used the USB Power Meter (UPM) Web-U2, but I first had to reverse engineered the BLE and USB communication protocols it provided.