Friday, August 15, 2014

C3BO: Proof of Concept using Timbermanbot Schematic

This post is part of a series about building electro-mechnical PIN-cracking robots, R2B2 and C3BO.

This is a proof of concept for @JustinEngler's C3BO ( using transistor controlled relays. It was prototyped by modifying Blink from the Arduino sample project.

The schematic was obtained from Timbermanbot ( as seen on Hackaday (

In the video, You'll notice I've replaced the touchpad for your finger with a wire to the headphone jack's ground as the circuit ground. The two pieces of copper tape were no longer sticky enough to stay by themselves, so I am holding them down. They press two and 5 with about 8 key presses per second.
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