To aid in this task, [Jan Oelbrandt] created Shift4Me, an open-source Arduino powered electronic shifter. The system consists of a hall effect sensor at the pedals to measure cadence, an Arduino ...

Community collaboration is a great thing. Take the Arduino PWM library for shift registers. Some folks at the Arduino forum pitched in and helped [Elco] trim off a bunch of clock cycles by using ...

Tildesign has tackled the problem and developed an RS232 to TTL converter. The level shifter contains a two channel RS232 converter which works on both 3V and 5V power suppplies. The board, which is ...