I would like to start a project building a satellite analyser controlled by an arduino.
So for the start i need (generally):
1. Arduino mega board + an 3,2" TFT Screen.
2. A satellite tuner. I can remove one from a spare sat receiver. As i read their PLL is controlled by I2C interface so you can select the frequency and they provide demodulated I and Q baseband signals.
How can i use these signals?
Do i need a decoder chip? After some search i found the TDA 8044 but i cant understand how to use its outputs.
My thought is to control the tuners frequency with arduino, scanning the one of the 4 bands and show the lvl of the frequencies as a signal on the screen.