When I was recently scrolling on AliExpress, I saw a Raspberry Pi Pico 2 knockoff, which has a USB-C port. Since I really hate micro-USB-B, I ordered some boards - what could go wrong? Well, as you can see in my following analysis: A lot. I hope my work gives you some guidance so you can analyze other boards as well.
The RP2350 is a nice microcontroller from Raspberry Pi. Recently I thougt about a new project, where a lot of PWM channels would be needed. The RP2350B has 24 PWM channels, which is a lot - but not enough. I would need at least 33 PWM channels, and also some more GPIOs, so the RP2350 alone isn't enough. So I thought about a port expander... But what about using a second RP2350 as a port expander?
Die Fritz!Box 7590 ist, vor allem wenn man wie ich noch antike ISDN-Telefonanlagen am Laufen hält, eine tolle Box. Und sie wird noch mit den aktuellsten Updates versorgt. Allerdings gibt es ein Problem: Das WLAN geht bei sehr vielen Boxen kaputt, Kleinanzeigen ist voll mit defekten Boxen. Ich habe mir ein paar besorgt und das Problem analysiert, daraus ist ein YouTube-Video entstanden, in der…
This switch was only 3.79€ on AliExpress. It wasn't even labeled as switch, but as "Network Splitter". Since I had a rough idea where to use it, I bought it. Here's the AliExpress screenshot, I'm pretty sure a link here wouldn't help a lot: