Then you can rotate the encoder to select the station from the list. To list the last 4 stations, press the encoder for long time (about 2 seconds). So you can freely search the favorite station without saving anything in the EEPROM. To save the life of the EEPROM, save procedure invokes in a minute after the station have been changed. The last 4 stations list is saved in the EEPROM of Arduino each time you change the station. Just press the encoder once to switch between the modes.
FM ENCODER STEREO MANUAL
You can set frequency by switching to the manual mode. The station changes to the next one with the good signal level. In this mode the radio module seeks the stations up or down when you rotate the encoder forward or backward. There are two modes the tuner can run: automatic mode and manual mode. I have added some new Cyrillic font to the library, so please select the font you have in the sketch. This library is fast, reliable, expandable and very convenient for many black and white displays. The U8GLIB graphic library is used to display the information on the Nokia screen. The Li-ion battery powers the amplifier directly, without any regulator. To make the volume acceptable, the simple audio amplifier is implemented. Internal voltage regulator guarantees the correct voltage on the radio module and the screen.
FM ENCODER STEREO PRO
To make the project simpler, the Arduino pro mini 3.3V controller is used to control the radio module. The RDA5807 is a self-sufficient radio module. Here you also will find the best external stereo generators and stereo encoders for your fm broadcast signal. Radio Data Signal - RDS - digital syncronized encoders. The screen backlight is automatically adjusted. M Pro Broadcast can supply you with the best RDS encoder that fits exact the needs of your radio station.RDS information (station name) is displayed in the bottom of the screen.The list of 4 previous stations is implemented to simplify navigation between the stations.Graphical Nokia 5110 display is used that allow to create friendly user interface (not in the case).The Li-ion battery 18650 with USB charger is used to power the radio.The Nokia 5110 display, I believe, is a good choice for the radio because it is well-readable, easy to use, customizable and has low-power requirements that help increase the battery life. Furthermore, the radio can be powered by Li-ion rechargeable battery and equipped with a interesting USB charger. I have thought it is very god idea to play with this module and build my own FM radio that can have custom features. Surfing the Internet, I have faced a great FM radio module, RDA5807 that supports RDS signal receiving. This project is about building a simple FM radio controlled by Arduino.