I have an Apollo ultrasonic oil level monitor on tank. I am planning to design a receiver that can receive the signals transmitted (433 MHz band, FSK), and decode them into an oil level, which it can then put on a web site, use to graph oil consumption, detect oil theft, automatically warn me to order more oil etc.
Has anyone done anything like this? In particular, does anyone know the exact parameters that the Apollo device uses? The exact frequency, the deviation, the digital bit rate, the encoding scheme etc.?
This is very similar to some projects that some of you have done to receive data from a weather station, but of course all the parameters will be different.
If anyone has any information that would help me, please post here.
Thanks - Rowan