Replacing GBA cartridge battery

Recently, I wanted to test a Pok√©mon Ruby cartridge I’ve had lying around for a while. It had quite a lot of playtime on it, so I was keen to see if the save data was still intact. After powering on the GBA, I was greeted with an unfortunate, but somewhat expected,

LED controller PCBs arrived

The PCBs I designed for a simple LED controller just arrived. They were manufactured by Seeed Studio. The controller has a single FET to set the brightness of a connected LED strip using Pulse-Width Modulation. The PWM signal is generated by a PIC microcontroller and can be adjusted with a single piezo

Yaege FC-1 frequency counter

I just received my new portable frequency counter in the mail, so I decided to take some pictures of it. The counter is a Yaege FC-1 from 409shop, but it’s also available from a lot of other stores for about $50. The FC-1 covers a wide frequency range (10Hz – 2.6GHz) and

New website

Welcome to the new and improved Qluster electronics website! A lot more content will be added in the near future. In the meantime, check out the article I wrote on a simple LIRC transceiver.