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STD Solar powered soil moisture indicator

License: Public Domain

Mode: Editors' pick

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Update time: 2019-10-19 12:19:45
Creation time: 2019-06-11 09:22:09
Description
This board uses a supercapacitor rated at 5.5V which is intended to be charged by a solar cell rated at 6V. The moisture sensing is done by one of the cheap capacitive sensors. The ATtiny85 microcontroller firmware reads the moisture sensor every 30 seconds and blinks the LED if the measured value is over a threshold. The button is used to program the threshold. * Supercapacitor: https://www.aliexpress.com/item/32861763465.html * Solar cell: https://www.aliexpress.com/item/32820169566.html * Moisture sensor: https://www.aliexpress.com/item/32886868425.html
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