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RFduino Power Shield

RFduino Power Shield allows to power an RFduino module from batteries, and provides 3 outputs (VCC out, +5V out, +3V3 out).

 

If you want to know more…

If you want to know more about RFduino, you may have a look to About RFduino.

Requirements

RFduino Power Shield uses few items:

  • A barrel jack connector for input power.
  • One LM317T voltage regulator with a 270Ω and 820Ω resistors for +5V line.
  • One LM317T voltage regulator with a 220Ω and 360Ω resistors for +3V3 line.
  • Three 100 µF capacitors to filter voltage spikes.

The perfoboard assembly and schematics

Perfoboard assembly

Schematics

Schematics and code are available as a Frizting file.

Download

Some photos

Live assembly
Live assembly.

RFduino Power Shield in action



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