Attempt at a 1 bit oversampling ADC based AM Radio for ULX3S board.
Based on a few projects on the web such as this one featuring 1-bit SDR on MachX02 board and this one, a Nexys board AM radio.
To wire the external circuit (same as Alberto Garlassi's - see link above) :
- Solder dual row header to right hand side of ULX3S
- Make up a strip board with the following connections:
- Connect 12k resistor between 3.3V and gp9+
- Connect 12k resistor between GND and gp9+
- connect 12k resistor between gp8+ and gp9-
- connect 220pF cap between gp9- and GND
- connect 1nF cap between gp9+ and antenna wire (I used 2 - 10 m hookup wire)