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Description
A baby which is a simple water sensor can be used to detect soil moisture when the soil moisture deficit module outputs a high level, and vice versa output low. Use this sensor produced an automatic plant waterer device, so that the plants in your garden without people to manage.
- adjustable sensitivity blue digital potentiometer adjustment (Figure)
- operating voltage 3.3V-5V-
- module dual output mode, the digital output is simple, more accurate analog output.
- small plates, PCB size: 3cm * 1.6cm
- power indicator (red) and digital switching output indicator (green)
- a fixed bolt hole for easy installation
- comparator LM393 chip, stable