No Power? No Problem! A Wireless Pi Doom Machine In my latest wireless charging experiments, I got my hands on a set of wireless charging PCBs and dove into testing different voltage inputs and their efficiency levels. It was interesting to realise that the 5V input managed to provide a decent efficiency of 73%, while 12V input struggled and heated the receiver board excessively. With the perks and limits of this setup explored, I took a whirl at creating a wireless Pi Doom machine. It worked like a charm! However, I quickly noticed the need to split charging and boost board into two different modules - a project to... 12 July 2023
The PCBs are in production - what have I messed up? After some stress and trepidation, I finally took the plunge and sent my PCB design off for manufacturing. My design centers around building a large seven-segment clock with LED filaments. Jumping hurdles such as voltages, pin usage, and limiting the load on my power supply, I've settled on the ESP32 as the system's heart and come up with a final circuit design. While doing this, I've quickly realized I could improve my layout and fixed a small mistake. Also, I've prepared for either types of LED filaments - the high-voltage ones or the larger, 3v ones. However, I did bungle... 06 February 2022