Soil Humidity Hygrometer Moisture Detection Sensor Module (Analog and Digital Output) - Server On The Move
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Soil Humidity Hygrometer Moisture Detection Sensor Module (Analog and Digital Output)

Vendor: Server On The Move
SKU: MOIST001
$5.68 $4.78
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Basic two-piece water sensor which measures the soil moisture. The sensor connects to the sensor module which manages the digital and analog output.

It operates on 3.3V - 5V and has a digital output as well as an analog output

For the digital output, the potentiometer can be used to trigger the change between HIGH and LOW.

Features:

  • Sensor and module separate
  • LM393 comparator
  • Dual output (Digital or analogue)
  • Power indicator
  • Digital mode indicator
  • Variable voltage between 3.3V and 5V
  • Module connector spacing to suit breadboard
  • VCC can be powered from digital out - to switch sensor on and off through code

Specifications:

  • Comparator Chip: LM393
  • Operating Voltage: 3.3V~5V
  • Module:
    • Size: 32mm x 14mm
    • Mounting hole: One
    • Connectors to Sensor: right angle: +, -
    • Connectors to Unit: right angle: VCC (3.3V - 5V), GND, DO, AO
  • Sensor:
    • Size: 60mm x 20mm
    • Probes: 2 x 7mm x 45mm
    • Mounting hole: Two
    • Connectors to Module: right angle: +/-
  • Cable connecting module and sensor: One
    • 20cm
    • DuPont female/female
    • two wires

For working examples for nodeMCU using Lua see our blog entry here