ToM Transistor based Extruder “Relay Fixâ€
thingiverse
This is sort of a derivative work of ToM Extruder Relay Fix by M_G http://www.thingiverse.com/thing:9130 Which is itself a derivative of ToM Extruder Relay Fix http://www.thingiverse.com/thing:5569 by MakeALot http://www.thingiverse.com/MakeALot This uses transistors instead of Relays. Perhaps some will find this useful if they don’t have access to relays. A variant of the ToM Extruder Relay Fix for dying extruder motors that operates in the forward and reverse directions. This thing uses 4x NPN Transistors, 2x resistors and 4x 1N400X series diodes. I have not yet built this myself though! Instructions Gather Parts: 2x Resistors (somewhere between 100 to 1kohm) 4x NPN Transistors (2N3055 or TIP31 Recommended) 4x 1N400X series diodes (1N4001 would be fine) wires breadboard dying ToM Assemble according to Circuit Diagram Breath life back into your ToM DC extruder motor until you can source replacement parts Thank Eoin for sketching the circuit diagram and recommending parts
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