from Gold Silver Worlds:
Silver Ink Makes Low Cost Agricultural Sensor Possible
SenSprout, a leaf-shaped sensor that allows farmers to remotely measure rainfall and soil moisture levels, uses silver inks to produce printed circuit board sensors at low cost.
Current water sensors cost over US$100 without monitors or data loggers, according to the company’s founder, Kazuhiro Nishioka. The SenSprout sensor costs less than half, not only because of the inexpensive printed circuit board construction but also because it connects to an app on a smartphone. No additional equipment is necessary.
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