GM328 Transistor Tester Case
by digimatic, published
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Simple Case for the popular Transistor Tester GM328. Search for the board from your favourite Chinese Import site. Holds Tester PCB and Battery with snap off back cover and plug for the test lead socket on the side.
Designed for quick printing (2.5 hours for everything at 90mm/s on a .4mm nozzle)
.4mm nozzle can only just render the numbers on the front panel. Chose number free version for no numbers and use a sticker if you can't print that fine.
Custom based on 3Drag
Make sure your printer is well calibrated and printing to size...Everything fits if you print to spec but tolerances on the button/button hole and the PCB mounts will be tight if your printer is out of spec.
PCB mounts use M3 screws (the holes are 2.8mm so you should get just the right amount of bite on a machine thread M3 screw.
If the button fits but activates the board when you screw the pcb mounts down then loosen the screw nearest the button slightly.
I wanted more clearance on the release lever for the ZIF socket so I removed the socket from the board and put a standard DIL chip socket in-between the ZIF socket and the board. But the lever will work without this.
How I Designed This
Drawn in Autodesk Fusion 360. Ask if you'd like design files to remix
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GM328 Transistor Tester Case by digimatic is licensed under the Creative Commons - Attribution license.
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- You must attribute (give credit) to the creator of this Thing.
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