Step 1Tools & materials
- Long nose plier
- Wire cutter
- Utility knife
- File
- Rotary tool with grinding bits
Materials
- Super glue
- Double-row, right-angled PCB header
- Metal ball bearing (must be large enough so that it won't slip between the PCB headers)
- Ink tube from a pen (must be large enough so that the ball bearing can freely slide inside it)
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