This is a tutorial that enables you to power your Raspberry PI2 / Raspberry PI B+ form any power sources that supplies voltage between 6.5V up to 20V and current >1A.
I used as power source the 19V wall adapter from one old BENQ notebook.
This hack is useful also in configuration where gel-Lead(Pb) rechargeable batteries are used as power supply.
- between 15 to 30 minutes
Step 1: Gathering Parts and Tools
- 1pcs. x g-SPS 5V version switching power supply
- 1pcs. x 2.1mm/2.5mm barrel power jack (choose one that fits with your wall adapter) or see "Barrel jack alternative" and g-SPS reference later
- 1pcs. x 3 pins standard 0.1"/2.54mm row-header 90 degrees or straight
- connecting wires x2
- soldering iron
- small pliers / clip
Step 2: Soldering the Connectors
Remove the central pin from the pin-header using the pliers or the clip.
Solder the pin-header (see the two pictures).
Solder the barrel connector (optional, see "Barrel jack alternative" in next step).
Check for short-circuits.
Step 3: Wire the Boards Together
Connect the wires as shown in the header picture.
You are ready. Enjoy!
DO NOT REVERSE THE POLARITY! DO NOT MAKE SHORT CIRCUITS!
WARNING: THIS POWERING CONFIGURATION BYPASS THE RPI BUILT IN POWERING PROTECTION!
Barrel jack alternative:
- you can use 2pin standard 0.1"(2.54 mm) soldered to the +Vext and GND pads, as input power source connector. See details on g-SPS reference bellow.
- g-SPS 5V version [PN. gSPS102#5V(LiPOL)]
- Raspberry PI 2 / Raspberry PI B+ / Raspberry PI ZERO extension pin out
If you enjoyed this small how to, just give it a like. :)
You may like to read my other RPI related instructables: