Electronics

June 24, 2025
in Electronics, IOT
2 min read

Display WhatsApp messages on a LED matrix with ESP32

esp32 max7219 led matrix

Do you need a small and cheap display to show about your status? Like you're in a meeting, on site or on holiday? With this project you can conveniently send a Whatsapp message to twilio, NO extra mobile App is required and the message will show up on the LED matrix.

January 1, 2024
in Electronics
1 min read

Power Supply

Power Supply Cabeling

I was lucky enough to find a functional computer power supply in the electric waste of the Uni campus. There are many good tutorials on YouTube how to convert it into a bench power supply. Links to the tutorials are on the lift side. It proved to be a very useful tool for charging batteries and powering prototypes. The front panel is 3D printed and I used Fusion360 for the design.