SPC Serial data connector for calipers and Indicators (DIY DRO)

cults3d

This is a flexible filament connector for SPC serial ports commonly used on digital calipers and indicators, perfect for those wanting to build a DIY DRO or read data directly from the calipers over serial. Note that it's designed with a tight fit in mind: I highly recommend printing this out of flexible TPU filament only. This seems to work exceptionally well for its intended purpose. I might be slightly biased, but this little connector appears to function better than the flimsy commercial connectors that came with my DRO (which I was hesitant to cut and reuse, so I ended up down the rabbit hole designing this connector). It's also significantly shorter than commercial connectors, only sticking out 10mm, and the ribs on the sides and top provide a secure grip when unplugging. To assemble it: you will need some 24AWG wire (0.4-0.6mm diameter wire with 1.2-1.4mm sleeve diameter). This works seamlessly with both solid wire and stranded wire (with solder coating for the contact area). Strip about 20mm of wire, wrap it around the tip, tighten it securely and cut off any excess, then tuck it in snugly (you can add a dab of super-glue if desired but it seems to work fine without).