Petter Holt Juliussen • Mail | GitHub | Letterboxd

for later reference.

Making a cell phone charging station for the cabin

2021-05-12 | 3d printing, stl, electronics
Making a cell phone charging station for the cabin

Most charging stations for cell phones (and tablets, e-book-readers, smart watches, earbuds, cameras, headlamps ...) are made for AC 230 V mains (at least the nice ones with an internal regulator/transformer). The big exception is of course chargers for DC 12 V, commonly found in cars or boats. These are, however, often intended to be plugged into cigarette lighter sockets or simply panel mounted. In a solar powered cabin, with regular power outlets, this is not really suitable. The following is an attempt to make a 3D printed "charging station", using readily available (panel mount) chargers with support for charging technologies one would expect for modern smart phones - replacing the currently used under-powered 4 port USB regulator.

Hardware

I opted for a couple of panel mount chargers providing both USB Type A and Type C sockets, supposedly supporting Quick Charge (QC 3.0) for the Type A sockets and Power Delivery (PD) for Type C. There are of course LEDs (indicating voltage level and charge rate), but these are (fortunately) toggleable. (Since these are relatively cheap eBay-chargers, it will be interesting - as always - to see if they actually work as advertised.)

12 volt usb charger

3x USB Type A QC 3.0 Output (QC): DC 5V/3A; 9V/2A; 12V/1.5A
1x USB Type C PD Input: DC 12-24V

Enclosure

A simple box (120x60x67 mm., WxHxD) to mount these chargers was designed using Autodesk Fusion 360 and printed on a Prusa MINI+ (STL files below).

Model

cad-1 cad-2 cad-3 cad-4

STL files

Result

res-1 res-2 res-3 res-4