Monthly Archives: July 2011

My First Crystal Radio

As I was trying to organize things a bit in my “office”, I happened to unearth a bit of nostalgia. This is my first crystal radio. I built this thing after reading about it in some old book. It’s probably … Continue reading

Posted in Electronics | 2 Comments

Retro LED Displays

I recently found some HP 5082-7433 LED bubble display modules on eBay. These are three digit, 7 segment displays with decimal points. The “bubble” is a magnifying lens molded into the epoxy package. I ended up finding a datasheet (warning, … Continue reading

Posted in Arduino, Electronics | 3 Comments