Track Soil Moisture with Micro:bit @microbit_edu #microbit #microbitlove #microbitmonday
Make a simple soil moisture tracker with micro:bit, Via Makecode!
Connect a nail to the GND pin with a croc clip and insert it in the soil
Connect the other nail to the P0 pin with a croc clip and insert it in the soil
That’s it!
he soil acts as a variable resistor based on the amount of water and nutrient. The water is not conductive but the nutrient are, so more water, more nutrient, so the soil will be less resistive.
To measure this, we read the voltage on pin P0 using analog read pin which returns a value between 0 (no current) and 1023 (max current). The value is graph on the screen using led plot bar graph.
Experiment!
insert the nails in the dry dirt and you should see most LEDs off
insert the nail in the wet dirt and you should see most LEDs on
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Each Monday is Micro:bitMonday here at Adafruit! Designed specifically for kids and beginners, the micro:bit is a pocket-sized computer that you can code, customize and control to bring your digital ideas, games and apps to life! Play, learn, explore: get started with micro:bit! Adafruit is an authorized Micro:bit reseller- check out all of our posts, tutorials and Micro:bit related products!