Lora Soil Moisture Sensor

Great improvements on Makerfabs Lora Soil Moisture Sensor V3!!!

1. TLC555 removed, while the Atmega328P(D9/Timer1) generates the 2 MHz pulse (only during the measurement phase, switching off afterward), for capacitive moisture measurement.
2. Unique ID by default, for easy/fast usage as getting it on hand.
3. Ultra-low-power consumption design on hardware& firmware, 7.1uA in sleeping mode, minimum 2 years working time with battery 2x AAA.
4. Improved J3166 water-proof paint to enhance the lifetime of usage. It has outstanding moisture-proof, salt fog proof and insulation properties.

For more detail, please check here.

1. There the D5 to turn On/Off the power of 555 and the temperature sensor(AHT10), that you do not always need to check.  

2. TLC555 to generate the wave , about 400K. 

3.  Atmega328, works in 3.3V 8M .