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AVR128DB28

AVR Printed Circuit Board for creating IOT nodes with the RFM95 LORA chip

3D rendering

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)