1. Program the sample code to Arduino.

2. Connect the Si4704 module to Arduino.

3.3V : VCC

   GND : GND

   A5 : SCLK

   A4 : SDIO

   D2 : RST

   A0 : Trimpot (optional)

Note: left column means Arduino pins, right column is the Si4704 pins.

3.  Use a serial terminal console, baud rate is 57600, wait for several seconds:

It will display:

Initializing I2C and Si4703

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Tuning

Waiting...

Si4703 Configuration

Current station: 97.3MHz

1) Tune to 97.3

2) Mute On/Off

3) Display status

4) Seek up

5) Seek down

6) Poll for RDS

r) Print registers

8) Turn GPIO1 High

9) Turn GPIO1 Low

v) Volume

w) Tune up

s) Tune down

Press w to increase frequency and s to decrease the frequency.