2017-10-14, 06:17 AM
Thanks for pointing out these inductive sensors, It's nice to find such an economical way forward with tank monitoring. I thought I could get a small number of them going with the GPIO and Actions tabs in Openplotter but that hasn't really worked out and I'll have to see what I can do with your code.
They don't work on my aluminum tank of diesel, as we suspected. I have been wondering about a circuit to measure the resistance on the existing tank sending unit using the ADC chip already implemented. The catch is I think we need to disconnect the existing gauge momentarily to take the measurement. There must be a simple circuit that could do that periodically; once every 10 minutes would be more than sufficient. And I suppose on the software side we'd need to report the highest reading in 10 minutes instead of a realtime measure.
They don't work on my aluminum tank of diesel, as we suspected. I have been wondering about a circuit to measure the resistance on the existing tank sending unit using the ADC chip already implemented. The catch is I think we need to disconnect the existing gauge momentarily to take the measurement. There must be a simple circuit that could do that periodically; once every 10 minutes would be more than sufficient. And I suppose on the software side we'd need to report the highest reading in 10 minutes instead of a realtime measure.