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...
In this blog post, I embarked on a fun project to create a DIY power bank using two 10,000mAh lithium cells I had lying around, and a charge control board. After some tinkering and tests, I learned that measuring power bank efficiency requires more than looking at amp-hours. With some help from a friend, I found out our power bank was actually over 93% efficient, a pretty fantastic result. Despite some challenges with certain devices not drawing their full potential power from my power bank, I concluded that while it was an enjoyable project, buying a ready-made power bank might...