MySensors Li-po/USB powered wirelles node

PCB size as 18500 Li-po battery board with ATmega328p with integrated USB charger and battery protection IC. Supports ATSHA204A CryptoAuth chip, DS18B20 temperature IC and Meder reed switch.

Power consumption

• sleep: 58.1uA
• wakeup: 18.2mA

Supported radios:

• NRF24L01 SMD
• NRF24L01+LNA+PA SMD

Pins used:

• D2 = reed switch 1
• D3 = reed switch 2
• D4 = 1-Wire bus with R2 pull-up to D5
• D5 = 1-Wire supply
• D7 = LED indication
• D9 = CE pin
• D10 = CSN
• SPI = radios
• A2 = ATSHA204A
• A7 = battery monitor

PCB top view

PCB bottom view

ATmega328p fuses

• HIGH: DA
• LOW: E2
• EXTENDED: 06