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Uses Atmega328p (on internal RC oscillator), 3v CR2032, NRF24L01 (mini). Designed for very low power operation. Optional 100nF caps for noise rejeti...

Add ESP8266 ESP-12 to a roomba! All resistors are 0805. Need to add a mini dc-dc converter from ebay and potential divider to drop the TX line to 3.3...

Nothing fancy, just another NRF24L01 breakout but this time for a arduino pro-mini (3.3v version). NRF board sits over the top of the pro-mini to r...