DESCRIPTION
If your plants could talk, would they call out “Water me, Seymour?” Unfortunately, (or fortunately, perhaps) plants have yet to develop the ability to speak. But thanks to the SparkFun gator:soil micro:bit Accessory Board, you can now measure the moisture level in soil without any vocal clamouring from your leafy lads. And, best of all–it is part of SparkFun’s gator:bit series of alligator clippable accessories, meaning you can easily interface it with the micro:bit or other microcontrollers!
The gator:soil consists of two probes and three pads (PWR, GND, and SIG). The probes are used to measure the conductivity of the soil. SIG provides an analogue voltage out that can be attached to an ADC pad on the gator:bit (v2). The value read on SIG is dependent on a few variables, including soil composition, contact on the probes, soil compaction, and other factors. In most cases, it will behove you to calibrate your sensor reading for each soil sample and sensor. Once calibrated, for a fixed sensor, the primary variables to measuring conductivity in the soil will be the power input and moisture content of the soil.
We recommend powering the gator:soil with between 3.3V – 5V. Again, please note that the analogue value returned will vary depending on what voltage is provided for the sensor. For use with the gator:bit (v2) and micro:bit, you should provide 3.3V through the PWR and GND pads. We recommend not powering the sensor constantly to reduce corrosion of the probes; this can be controlled through one of the digital pins of the gator:bit (v2).
FEATURES
- gator:bit Compatible
- Contacts:
- PWR: INPUT: Power to the sensor (3.3V-5V)
- SIG: OUTPUT: Analog voltage representing conductivity between probes
- GND: REFERENCE: Ground reference (0V)
- Probes: Used to sample soil moisture content for sensor
RESOURCES
- Schematic
- Eagle Files
- Hookup Guide
- gator:soil PXT Package
- micro:bit Information Page
- GitHub Hardware Repo
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Note: Orders containing more than one product are assigned a particular processing time dependent on the particular item.
We will carefully examine all products before they are shipped. The majority of orders will be sent within 48 hours. The expected delivery time is 3 to 7 days.
Returns
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Our policy lasts for 30 days. If you have passed 30 days without a trace since the purchase however, we're unable to give an exchange or refund.
Your item must be in its original packaging and in good condition. It must also not be used. It should also be returned in its original packaging.
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