Adapter for Labor Power Supply to USB i.e. for Raspberry Pi.
The USB connector from the Sparkfun Eagle Library was used to create the USB connector for this Library, see https://github.com/sparkfun/SparkFun-Eagle-Libraries
Many prototyping boards these days use USB Connectors as Power Source. For easy powering those devices with my DC Power Supply (or in german "Labornetzteil") i created a adaptor from 4 mm banana plugs to 4 USB Jacks.
The device in action:
Find all the files necessary to build your own on GitHub.
I have a few boards available, if you like to build your own, contact me.
The design is really simple and consists of only 4 resistors and 8 jacks. The real work was to make the mechanical dimensions fit for easy and fast assembly.
Can be easily done by every board house.
Bill of materials
|2||Through-hole banana jack Black||Reichelt|
|2||Through-hole banana jack Red||Reichelt|
|1||Resistor 43K 0805||Distrelec|
|1||Resistor 75K 0805||Distrelec|
|2||Resistor 51K 0805||Distrelec|
|1||Laser cut Front panel 3mm thick||Formulor|
|1||Laser cut Back panel 3mm thick||Formulor|
|4||Nuts 6mm Fine Pitch Thread|
|4||Screws M3 * 6mm|
|4||Screws M3 * 10mm|
|4||Hex Standoffs M3 * 12mm without Thread|
|4||Hex Standoffs * 5mm with Thread|
Prepare Front Panel
Place the banana jacks in the front panel and secure them with the additional 6mm fine thread nuts. Add one of the delivered 6mm fine thread nuts to every banana plug.
Add the 12mm standoff to the front panel with the M3 10mm screws. If you do not have 12mm standoffs, it is possible to replace the 12mm standoffs with a 10mm standoffs and a additional nuts.
Add board to front panel
Place the board on the 12 mm standoff and secure it with the 5mm standoffs.
Screw the 6mm nut up until the board is reached.
Take the remaining 6mm fine threaded nuts and secure the banana plugs on the board.
Add USB Jacks
With the USB jacks from Reichelt, you need to first straighten the outer pins as seen on the left jack. Otherwise they will not fit through the front panel.
Place all 4 USB Jacks in the front panel and solder them to the board.
Add back panel
Use the 4 M3*6 screws and screw the backpanel in place.