Posted by admin | Filed under Lab Hacks
The rubber push button on the Wheaton Crimpenstein can be tough to push after crimping several hundred vials, so I rewired the switch to an arduino. With the help of the CapSense Library a baby transistor and some copper tape + aluminium foil, we have a simple touch driven switch!
Arduino Setup: It should probably be transferred to an ATTiny, soldered and packaged properly but here it is for now:
The dark grey rubber button on the front of the crimper still works as normal. With only 2 simple wires coming out the back of the unit, the crimper can be easily disconnected from the breadboard if needed for unclogging cap jams.
Photos of the Wheaton insides (top piece removed):
The Switch where I soldered extra wires to: