Quote:
Originally Posted by BigBudBalls
Just toss one of these at it. PLC Units Products Or these: Programmable Relays Hey lorenzo, you have a source for pH sensors for full time immersion? Analog, resistive, or 4-20ma output?
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I always love industrial parts. I'm hoping to come up with a system that's reliable and useful, and the average grower can easily set it up with no electronics knowledge.
for the ph sensor, I was thinking of getting a cheap one off ebay with an analog display. I can build a resistive sensor easy enough, but the parts and time probably add up to more then what's ready made on ebay. besides, I'd end up frying it if I made one. should be able to connect the analog tester to my interface card with very little modification. 4 analog inputs, 0 to 5v.