examples

Examples

This folder has some examples that might help you to use the RDA5807 Arduino Library in your receiver project. If you find some error or problem during your implementation, please let me know.

This project is about a library to control the RDA5807 device and the focus of this project is the library and its functionalities. Please, don't ask me to assist you in your: displays, encoders, LED, buttons or something else out the library scope. Thanks.

The examples stored in this folder are made to assist you to build your own sketch. Therefore, it is important to say that there was no care with the layout. This part of the project stays with you.

The RDA5807_01_SERIAL_MONITOR folder shows how you can check your circuit by using just the Arduino IDE Serial Monitor to control the receiver. Check the examples with Atmega328 and ESP32. In the sketch you will find the wireup with Atmega328 or ESP32 and RDA5807 device.

The following table shows the main examples implemented in this library. These examples can guide you to build your own receiver.

Sketch Name	Description
RDA5807_00_CIRCUIT_TEST	Useful to check the circuit and many functions implemented in this library
RDA5807_00_MINIMAL_RECEIVER	It is a minimal receicer with two push buttons (ATmega328 - Uno, Nano etc)
RDA5807_01_SERIAL_MONITOR/ RDA5807_01_ALL_TEST_SERIAL_MONITOR	More about Tune, Volume, Seek and RDS features
RDA5807_01_SERIAL_MONITOR/ RDA5807_01_RDS_TEST_SERIAL_MONITOR	Test RDS functions using Serial Monitor
RDA5807_01_SERIAL_MONITOR/ RDA5807_02_ESP32	Test and validation of RDA5807 on ESP32 board
RDA5807_01_SERIAL_MONITOR/ RDA5807_03_STM32	Test and validation of RDA5807 on STM32 board
RDA5807_02_TFT_display	This sketch uses an Arduino Pro Mini, 3.3V (8MZ) with a SPI TFT ST7735 1.8
RDA5807_03_ATTINY_84_85	Test and validation of RDA5807 on ATtiny84 device
RDA5807_04_NOKIA5110	This sketch uses an Arduino Nano with NOKIA 5110 display
RDA5807_05_LCD16X02	This sketch uses an Arduino Nano with LCD16X02 DISPLAY
RDA5807_05_LCD16X02_ESP32	This sketch uses an ESP32 with LCD16X02 DISPLAY
RDA5807_05_LCD16X02_ESP32_I2S	I2S setup - This sketch uses an ESP32 with LCD16X02 DISPLAY and MAX98357A I2S setup
RDA5807_06_UNO_TM1638	This sketch drives the RDA5807 FM receiver and TM1638 (seven-segment display control)
Arduino Nano and OLED with Tiny4kOLED library	Nano and OLED implementation V1
Arduino Nano and OLED (Adafruit_GFX and Adafruit_SSD1306)	This sketch works on Atmega328 and LGT8FX based board. It is a I2C OLED setup
LilyGO/T-Embed and RDA5807 setup	This sketch was an adaptation of the Volos's sketch and uses PU2CLR RDA5807 Arduino Library with LilyGO T-Embed.

Examples and Schematics

Basic circuit (examples RDA5807_00_CIRCUIT_TEST and RDA5807_01_SERIAL_MONITOR)

Minimalist receiver based on RDA5807

The following code illustrates a minimalist implementation of a receiver based on RDA5807 and this library. For this receiver, the user has two pushbuttons to tune station (Seek Up and Seek Down).

#include <RDA5807.h> // It is a minimal receicer with two push buttons (ATmega328 - Uno, Nano etc)
RDA5807 rx; 
void setup() {
  pinMode(4, INPUT_PULLUP); // Arduino pin 4 - Seek station down
  pinMode(5, INPUT_PULLUP); // Arduino pin 5 - Seek station up
  rx.setup(); // Starts the receiver with default parameters
  rx.setFrequency(10390); // Tunes in 103.9 MHz  - Switch to your local favorite station
}
void loop() {
  if (digitalRead(4) == LOW) rx.seek(RDA_SEEK_WRAP,RDA_SEEK_DOWN);
  if (digitalRead(5) == LOW) rx.seek(RDA_SEEK_WRAP,RDA_SEEK_UP);
  delay(200);
}

Minimalist receiver based on RDA5807 circuit

TFT Display (example RDA5807_02_TFT_display)

Attiny84 with OLED setup

Attiny85 with OLED setup

{% include video01.html %}

• See the presentation video on youtube

{% include video02.html %}

• See RDS and TFT Display example - youtube

Arduino Nano and NOKIA5110 schematic

Source Code

{% include video03.html %}

• See RDS and Nokia 5110 Display example - youtube

Arduino Nano and LCD 16x02

Source Code

ESP32 and LCD 16x02

Source Code

{% include video05.html %}

• See RDS, ESP32 and LCD 16x02 on youtube

I2S and RDA5807FP Setup

{% include video06.html %}

• Video about the RDA5807FP and I2S Digital Audio setup

The photo below show the DAC MAX98357A device

Source Code

The table below shows the MAX98357A device connected to the RDA5807FP.

RDA5807FP	DAC MAX98357A
GPIO2	DIN
GPIO1	RC
GPIO3	BCLK

The photo below show the CJMCU-1334 module

Arduino UNO and display module TM1638

Wire up on Arduino UNO, RDA5807 and TM1638

Device name	Device Pin / Description	Arduino Pin
TM1638
	STB	4
	CLK	5
	DIO	6
	VCC	3.3V
	GND	GND
RDA5807
	SDIO (pin 18)	A4
	SCLK (pin 17)	A5
	SEN (pin 16)	GND

The TM1638 painel controls

TM1638 button	Description
S1	Increments the frequency (100kHz step)
S2	Decrements the frequency (100kHz Down)
S3	Seeks the next station available (The direction is defined by the last action of frequency changing)
S4	Increments the audio volume
S5	Decrements the audio volume
S6	Turnn the audio On or Off
S7	Sets the Stereo On or Off
S8	Toggles Bass on or off)

{% include video04.html %}

• See the presentation video about Arduino UNO and display module TM1638 on youtube

Examples of third parties

• Receptor de FM SDR con RDA5807 - Spanish
• RDA5807 Fm based radio - Portuguese
• Rádio FM RDA5807 com ESP32, Arduino etc - Portuguese
• RDA5807M - SINGLE-CHIP BROADCAST FMRADIO TUNER
• A small eagle library for popular RDA5807 Radio module
• RDA5807 fm chipset / arduino with a Nextion screen F5SWB@2021 / Version 1.18
• Breadboard FM Radio with RDA5807 and WIO Terminal
• RDA5807 Real test demo
• Receptor FM RDA5807 y Arduin. de 50 a 115 Mhz Experimental