NRF

Using the Nordic nRF24L01+ with a Seeeduino Mega 1280

The nRF24L01+ module (sources (archive.org)) is a really cheap & easy way to achieve wireless communications. With the internal antenna, the reach is about 100m (open area), with an extra antenna it’s apparently 1100m+. One popular Arduino library for it is the Mirf library (archive.org). Connections Required pins with fix locations / can’t be moved: Arduino Uno / Nano (archive.org): MISO -> 12 MOSI -> 11 SCK -> 13  Seeeduino Mega 1280 (archive.