OSH Park
16052^0
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16052^0
by epccs.
2
layer board of
0.90x0.55
inches
(22.89x13.97
mm).
Shared on
March 17th, 2016 18:36.
MT
This current loop powered circuit transmits at 3mA or 10mA depending on the state of a 555 timer. The timing events can be used to remotely measure the capacitive Moisture sensor and a thermistor. The current loop works over a CAT5 pair (a well-known 100 Ohm transmission line) that provides superior noise immunity.