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)