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Moist3D v1.0 $39.22US
excl. sales tax

This sensor measures soil moisture up to the point where it's really wet. But wait .. it also measures temperature and light level - perfect for measuring the ambient conditions of your plants. A digital I2C sensor, that outputs high resolution, low-noise signals. Need longer cables ? Use the ExtendCable2D.

Application examples

  1. Measure the soil moisture of the plants in your home.
  2. Combine with the Hot, Humid, Air and Light sensors together with Switches to control water valves, to create a full-blown irrigation system for your plants.

Technical specifications

Product Moist sensor
Version 1.0 (September 2016)
Sensing parameter moisture, temperature and light level
Sensing method capacitive, thermistor and photodiode sensors
Response time ? s
Power supply 4.75 to 5.25 V DC, ? mA
Sensor dimensions 127 x 16 x 4 mm (mm mm (5.0 x 0.63 x 0.2 inch)
Weight 18 g (0.63 oz)
Cable 1.0 m (39 inch), shielded, red wire = power, black wire = ground, grey wire = I2C data (SDA), white wire = I2C clock (SCL), extension tested upto 5 m (16 ft)
Connector male plug with 4 pins in two rows spaced 2.54 mm (0.100 inch)
Software support

  1. 04 Dec 2016: Moist3D v1.00 for MacOS and Windows from source code in Max. For multiple sensors or sensor outputs, run multiple instances of the application, each started in its own folder. Requires a digitizer with firmware v6.2, v6.3, v7.2 or v7.3. Use together with Connect (MacOS / Windows).

Application notes
  1. Please note that this is an electrical device. Do not immerse in water.
  2. Make sure the sensor is plugged into the digitizer with the red wire connected to power. Reversing the plug may cause damage to the sensor.
  3. Requires a digitizer with digital (I2C) ports, eg. the USB-microDig or the Wi-microDig.
  4. The default I2C address is 32 (0x20). Both I2C lines have 4.7 kOhm pull-up resistors.

This page was updated on Wednesday 08 February 2017.
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