I'm still "stuck" where I was: The next step is to setup at a campground and calibrate the circuit (fill the black tank and see what kind of reading I get when its full).
This will have to wait for next season as I've just winterized the camper (we drop it off at a Ford dealer to deal with the shifter cable on Monday).
How you been doing with your tank monitor project?
I have been working on a microcontroller project and am using an ATTiny85.
The ATTiny85 might make a great tank sensor as there is no boot up delay with these chips like there is with a typical Arduino microcontroller.
So they are basically instant on.
But have an abbreviated command set, so not all functions that you find in a typical Arduino environment are supported. But there are a lot of people playing with these things and someone has a workaround for most of the limitations.
Nice thing is they are in a 8 pin package, and cost around a buck a piece at Chinese prices.
The 8 pin package means there are only 5 GPIO, 3 of which can be analog input, and two are PWM. Of course, they can all be used for digital I/O.
The project I have been working on I'll call a "Toad Management System". I have breadboarded it and tweaked it for the last couple of months. I suppose it might be a bit overkill, but what projects aren't?
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