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View Code? Open in Web Editor NEWHardware design of a solar-powered LoRaWAN node based on ESP32
License: MIT License
Hardware design of a solar-powered LoRaWAN node based on ESP32
License: MIT License
Add TVS diodes for enhanced ESD protection of inputs connected to external sensors (with long wires), e.g. OneWire or UART.
Connection from battery B+ to analog input voltage divider is missing.
Workaround: Add a wire from B+ to J5.7 (A3) (see photo - white wire)
The footprint for the fuse F1 is too narrow.
As a workaround, F1 can be placed instead of connector J6 and a pin header at the actual F1 pads can be used to connect the fuse in series to the battery B+ wire. (see photo)
Add sensor power switch circuit, e.g. for multiple A02YYUW / DFRobot SEN0311 Ultrasonic Distance Sensors.
A0 can be connected to VB on the FireBeetle ESP32 board (if R10 and R11 are assembled), but it is also connected to the external input J5.1 via a voltage divider.
To be able to use both ADC input sources independently, the analog inputs of the LoRaWAN_Node PCB should be changed from A0...3 to A1...4.
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