STM32-RFM95-PCB
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tomtor
STM32 and AVR128 Printed Circuit Board for creating IOT nodes with the RFM95 LORA chip
AVR128DB28
AVR Printed Circuit Board for creating IOT nodes with the RFM95 LORA chip
Schema: https://github.com/tomtor/STM32-RFM95-PCB/raw/master/AVR-LORA.pdf
Note that most components are optional:
- A LED to flash
- I2C 4K7 pull up resistors
- A lot of capacitors (mounting a single 1uF will do in most situations)
- 32.768kHz crystal
- 24MHz crystal
- MCP1700 regulator with 1uA idle current
- Schottky diode for charging NiMH batteries from a solar panel
- Voltage divider for measuring battery voltage
Aisler link for producing 1206 board: https://aisler.net/p/EAZHDDHF
Aisler link for producing 0805 board: https://aisler.net/p/ZRKAROVP
STM32-RFM95-PCB
STM32 Printed Circuit Board for creating IOT nodes with the RFM95 LORA chip
See: https://www.thethingsnetwork.org/labs/story/a-cheap-stm32-arduino-node
You can order this board here:
https://aisler.net/p/CZGCIFFH
Credits:
https://github.com/myelin/myelin-kicad-libraries (STM32 module KiCad library)
https://github.com/mysensors-kicad/mysensors_symbols (RFM95 KiCad library)
https://github.com/novirium/ESPilot/blob/master/lib/ESPilot.pretty/RFM95.kicad_mod (RFM95 KiCad footprint)
tomtor