Charge clip for the original Pebble Smartwatch using spring loaded contacts.
Things you'll need to build a charger clip:
You need to measure the diameter of the usb cable you'll use and print the corresponding "cablecap". I uploaded cablecaps with 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm & 5mm diameter. If you need a different cap you can adapt it your self by changing the "CABLE_DIAMETER" parameter in the fusion360 model and exporting the cablecape again.
After cutting the USB-Cable in half, look for the GND and +5V wire. These are the only wires needed for the charger clamp. + and - on the clamp are marked in the 3D Model.
Don't forget to insert the cable through the cablecap BEFORE soldering the cable to the contacts!
The holes for the pogopins may need to be reworked with a 1mm drill bit by hand before installing the pogo pins. The contacts need to be inserted from the watch side of the clip.
When soldering the cable to the spring contacts, keep the heating time of the contact minimal to not meld the PLA of the clamp.
When the cables are soldered to the spring contacts, you should test the charging function before filling the soldered part and cap with hot glue and putting the cap in place.
I also uploaded the gcode I created for printing the clip body in PLA on a Prusa Mini+. You still need to slice the right cap for your cable.
I used 0.1mm layerheight and 4 perimeter on my Mini+ with a 0.4mm nozzle.
Happy printing and charging :)
The whole clip is inspired by the “Pebble Charger" by zeg on thingiverse but redesigned from scratch in fusion360.
The author remixed this model.
The whole clip is inspired by the “Pebble Charger" by zeg on thingiverse but redesigned from scratch in fusion360.