Smart watch charger (Amazfit Neo)

grabcad

Currently there is no charger for the Amazfit Neo with a type c interface. I took it upon myself to make a more compact charger than the OEM and add the type c interface.Updated Version : Smart Watch Charger (Amazfit Neo) 2.0After some light soldering and design modeling I was able to do just that.Although i took apart a knock off charger for the NEO linked below: https://www.amazon.com/Chofit-Compatible-Replacement-Charging-Smartwatches/dp/B08QHY6WLK/ref=sr_1_3?crid=1MY5LLZZ7OZCP&keywords=amazfit%2Bneo%2Bcharger&qid=1690655878&sprefix=Amazfit%2Bneo%2Caps%2C153&sr=8-3&th=1I found out that there is no proprietary chip for charging this device. The PCB only consisted of pogo pin connectors and a resistor going from V in to the pogo pin which i assume is to regulate charging current. It is possible to replicate this at a cheaper price if you have more experience in electrical work and soldering small components. As for the type c interface that was a simple input port board i ordered from amazon linked here:https://www.amazon.com/Type-C-Breakout-Serial-Connector-Converter/dp/B09KC1SMGD/ref=sr_1_1_sspa?crid=3KPS94IRV8H6A&keywords=Type+C+female+pcb&qid=1690656157&sprefix=type+c+female+pcb+%2Caps%2C148&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1The soldering was relatively easy just connect the ground to ground and V_in to Vbus. Although the orientation is flipped for actual watch charging. As shown in the last picture.I measured the circuit charger before assembly with a multimeter and the output is about 5 volts which is on par with its original charging speed. 3D Printing : This was printed using PP with these settings and preparationsPlace Scotch tape evenly no bubbles on top of the print bedPrint bed temp : 80°CNozzle temp : 225°CLayer height : 0.2 mmPrint speed : 30 mm/sRetraction length : 3 mmRetraction speed : 30 mm/sThese settings usually result with an easy no issue initial print, but the second print will have issues (clogging the filament). I believe this is due to the gears retracting the filament at a different rate than that of the settings above.If you read this thank you for your time