WABEsense

The open source data-logger hardware, which is part of the WABEsense project.

PCB top view	PCB bottom view

The main features are:

• lowPower

• External channels

  • 4x Analog 0-5V
  • 2x Analog 0-3V3 (VDDA)
  • 7x Digital In/Out
  • SPI interface or additional 4x Digital In/Out
  • I2C interface or additional 2x Digital In/Out
  • V_Supply (USB or external DC-Adapter)
  • 3V3 supply
  • 3V3 supply switched by microcontroller
  • 17V supply switched by microcontroller
  • VDDA supply (3V3)

• Internal channels

  BME280 sensor: pressure, temperature, humidity

• Data recording

  Internal FLASH (4 MB): up to 130000 data points (> 2 years at an 10 minute sampling interval)

• Configuration over USB-C connector (virtual COM-Port):

  • Device name string: max. 92 characters
  • Analog channel name string: max. 64 characters
  • Battery: nominal cell voltage, number of cells (used for system check)
  • Sampling interval: 1-1092 minutes
  • System time: RTC with back-up battery CR2032 (RTC unit is integrated in microcontroller)

• Firmware update:

  • Via memory stick using .bin files (USB-C connector)

• different kind of interfaces

  • simlpy SD-Card
  • USB OTG (device (CDC-Interface) or host)

• Power source

  • USB-C connector: 5V DC
  • External DC-Adapter (plug 2.1 x 5.5mm): 5.0-28V DC or

• user frendly