Modifications made by Licensee (see section 3.4.b in the License.txt file) Rev 1.0 - First public release - A MySensors compatible Arduino Pro Mini and nRF24L01+ carrier board - Used to accept input from an additional switch or sensor board that plugs into J1, J2 and/or J3 Rev 1.1 - SPI breakout release - Added connections to the MOSI and MISO lines of the SPI bus on connector J1 - Combined J2 and J3 on 1 header which is now labeled J2 - J5 has now become J3 - Repaired an issue with capacitor C1 which in the first release somehow didn't get connected.