Description
Mario Zwiers designed a TTN Arduino LowPower Solar Node. Cheers!
Others are saying:
Love the longboard shape sitting on the back of the battery! Great work…
Features
- Arduino Pro mini 3.3V without LED, without regulator (5uA)
- RF95W (1.5uA)
- MCP1700-330 LDO (1.6uA, 250mAh max, 2.3-6V input)
- NCR18650B (3200mA LiPo 4.2V charge, 3.0V cut)
- TP4056 charger with protection for LiPo (4.2-7V input)
- Diode for solar module (TP4056 works very well with 5V / 6V solar cells)
- Resistors, capacitor for measuring the battery voltage at A0 and 1.1V reference
- Plug’n Play slot for BME280 (temperature, humidity, air pressure over I2C)
- SMA antenna connector or wire e.g. helical
Links
https://mariozwiers.de/2018/04/03/my-first-own-ttn-node-with-self-designed-pcb/