“How to make a small FM Radio with oled display which all functions are controlled by a single rotary encoder.
Homemade Arduino Due radio with TEA5767 FM module
This time I will show you how to make a small FM Radio with oled display which all functions are controlled by a single rotary encoder. So far I have made several FM radios, but this is my first project with an Arduino Due board.
The Arduino Due is a microcontroller board based on the Atmel ARM Cortex-M3 CPU. It is the first Arduino board based on a 32-bit ARM core microcontroller.
It has 54 digital input/output pins of which 12 can be used as PWM outputs, 12 analog inputs, 4 UARTs , a 84 MHz clock, an USB OTG capable connection, 2 (digital to analog), 2 TWI, a power jack, an SPI header, a reset button and an erase button.
The Due is compatible with all Arduino shields that work at 3.3V. The project is taken from https://www.changpuak.ch/ where it is named “Wacharamod” in honor of Khwankeo Vajarodaya, and where you can find the original schematic diagrams and code. In the hardware section I have omitted some resistors and filter capacitors for simplicity.
Otherwise, the device is relatively simple to build and contains the following components:
- TEA5767 small Radio board which is the basis of the whole project
- Arduino Due microcontroller board
- SH1106 Oled display
- LM4811 Headphone Amplifier with Digital Volume Control
- PAM8403 small audio D-class amplifier board
- Speaker
- and Rotary encoder
The radio module and other parts are mounted on a separate PCB compatible with Arduino Due pins, in my case it’s experimental, but you can make a professional PCB, the cheapest, fastest, and highest quality at PCBWay. How to order is very easy and you will get 10 Pcs PCB for $5 with very great PCB quality TG150-160. Also You can design your own Gerber files for this circuit and upload it on their site (www.pcbway.com) Generally, shipping of the orders takes only 3 to 5 days.”