Hardware: Hive Interface Board 0.3

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New Dev Kit PCB

New Developers Kit hardware for the Raspberry Pi platform is undergoing final testing.

This is an interim solution - a step towards the goal of a complete turnkey system.


Features:

  • Plug and Play - all the sensors plug in.
  • 12 VDC power supply with battery voltage monitoring
  • Supports
    • HX711 24 bit ADC and 4 load cells in parallel.
    • two DHT22 temperature/humidity sensors.
    • TSL2591 Lux sensor
    • Rain Gauge


Plug and Play. Telco RJ11 (6P4C) connectors are used for all sensors. These are gold plated, reliable, self wiping, inexpensive, readily available, crimp on with an inexpensive crimping tool, lock in place (latch) and as anyone who has tripped over a phone cord can attest, very strong.

Two different power supplies are optional. These are 12 to 5 volt step down highly efficient switching regulators.

The next step will be to split this board in two. One board will meet the Pi HAT specifications and contain at least a 4 channel ADC so each load cell will be individually measured instead of being summed.

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