I've been planning to do similar kind of oil measurement device for my brother. Intention is to build an Arduino based device which uses ultrasonic sensor and the most probably DS18B20 temperature sensor. Data will be sent to Domoticz via MQTT protocol or JSON commands. Because my brother lives in ...

Damn! :shock: Same tank, same sensor, same problem! :lol: I've got one of these en route from China as I thought it'd be a bit more robust for in the oil tank. http://www.ebay.co.uk/itm/231541072898?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT My plan was to rig up a simple MySensors ...

You Sir, are my hero!

Great job! I'm going to have to try and replicate this!

Background I've been looking for a monitor for my oil tank for a while now. I currently have an old Watchman device that reports how much oil remains in 10% increments. Over the past two years it has proven to be very unreliable and has stopped working completely now. I have Domoticz running on a ...

I'm working on something similar to you, but for my oil tank. You've got the distance from the top of your tank to the water, so you're half way there. It's not too difficult to turn this into something more useful, but the shape of your tank will play a part in this. What you have right now is ...