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Originally Posted by FW28z
Pretty neat, eh?
This turned out to be an incredibly simple project, and uses an ATTiny85 with a bit of Arduino code. It is one of the major success stories for my design skills... in other words, it is one of the projects that actually worked!
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LOL! That is really cool and fits right in on the panel there. Good work.
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I have not yet given up on the tank monitor but I want to explore the FDC1004 a bit more. I see that the output is I2C, but I don't think those levels can be transmitted more than a couple of feet. So I also ordered a couple AD5171s, which are an I2C to variable resistor IC, so I can shoot an analog voltage to the monitor... probably via opto-isolator, etc.
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Yeah the V2 plan is to mount the new circuit in a box next to the tanks. Since I'm going to bluetooth it to the phone (got all the examples and test apps working already) I only need to wire power there. By being next to the tanks my I2C bus length will be really short (1" or less) and the sensor wires will only be 1-2ft long (I'll probably try to make use of the shielding pins on the FDC as well).
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