Atmel SAMD21G Sensor Board

Mike Rankin created this tiny sensor board with an ARM Cortex M0+ microcontroller and OLED display:


0miker0’s Blog: SAMD21G Sensor Board

It’s pretty tiny so a 4 layer board made the whole job easier. The top and bottom are pretty much dedicated for components, layer1 are tracks and power traces, layer2 is a ground plane. Mixing up an internal plane and routing layer was interesting.

Screenshot from 2016-09-21 09-43-22.png

The hardware consists of:

  • SAMD21G18A processor (used in the Adafruit Feather)
  • HDC1080DMBT temperature/humidity sensor
  • ADXL345B accelerometer
  • DS1340U RTC
  • MCP73833 LiPo battery charger
  • MicroSD card connector
  • Navigation Button and pushbutton
  • 0.66″ mono oled display
  • Micro USB connector for charging and uploading new sketches


The design files and source code are available on GitHub:

github mike-rankin/SAMD21G18A_Sensor_Board


Video of the board in action:


miker has shared the board on OSH Park:


Order from OSH Park

Atmel SAMD21G Sensor Board

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