This is a micro sensor module for Mysensors project: http://www.mysensors.org
Designed to run on 2 x AA(A) batteries, depending on how often one would like to replace the batteries.
The sensor includes the following peripherals
- Si7021 Temperature / Humidity sensor (Connected to I2C bus)
- Jedec compatible eeprom/flash footprint
- ATSHA204A for authentication
- LED
The following pins are available on headers:
- Powersupply (1.8 -> 3.5V)
- SDA / SCL (I2C bus)
- A0 / A1
- D3 / D4 / D5 / D6 / D7
- 6 pin ISP port
- 8 pin standard NRF24L01+ connector layout
- FTDI header for serial
Please note
MAXIMUM allowed supply voltage is 3.5V, anything above this WILL fry both Si7021, flash and NRF24 radio module. There is NO voltage regulator on board (To keep supply current down to a minimum)