Franzininho Badge00 Learn-to-Solder Badge By Fábio Souza (Franzininho) · Example build · 5 views · 0 remixes A first through-hole soldering kit: a robot-shaped badge whose two LEDs blink alternately from a classic two-transistor astable multivibrator on a coin cell 0SaveRemixCopy link DifficultyEasyPartsNo parts list Start the assembly guide →