Introduction: Si4703 FM Radio Arduino Uno Schield
2 months ago I was made FM radio by TEA5767 chip ( Arduino Uno shield). I was used with TDA2822 sound amplifier chip. Everything it works, but I get information that it is another Si4703 FM board who had RDS. So I don't waste mine time and create another Si4703 FM radio.
Step 1: Parts
To build this Si4703 FM radio you will need :
1) Si4703 board Ebay
2) 2x Rotary encoder Ebay
3) Oled I2C 128x64 Ebay
4) 2x 22k 0805 resistor
5) 2x 1K5 0805 resistor
6) 2x 4R7 0805 resistor
7) 2x 0.1uF 0805 ceramic capacitor
8) 0R 1206 jumper ( resistor)
9) copper board
10) TDA2822 DIP8 amp chip Ebay
11) 3.5mm audio jack socket Ebay
12) 3x 470uF electrolytic capacitor
13) 2x 10uF electrolytic capacitor
14 ) 1x 40pins header pins
Step 2: PCB Board
Design printed circuit board (PCB), I was used ,,Sprint-Layout" software.
Step 3: Arduino Code
Si4703_Radio_rssi_autoseek.ino - auto seek
Si4703_Radio_rssi_manual.ino - manual tuning
I was used libraries:
Step 4: Final Result
If you want to add external antenna you will had to cut pcb track between capacitor and ground (see photo).
It show RDS data but signal strength has to be very good. Oled display generator are making noise. So sound quality is not very good. It is made by myself, so I am very happy.