Junk Bin Antenna Tuner
I threw together a junk bin L network antenna tuner. The inductor is wound with solid core 14 gauge wire. The variable capacitor was scrapped out »
A Parser for GNUSim8085 Assembler Listings
I've been building an 8 bit microcomputer around the classic Intel 8085 processor. I found this excellent open source program, GNUSim8085, a "graphical simulator, assembler and »
Digital Clock - 7490 Decade Counters and a Hacked Quartz Clock
No microcontrollers needed here! I was playing around with some 7490 decade counters and ended up building a digital clock. Schematic PDF. The first trick was »