This circuit is used for playing MP3 files from a memory chip, card reader or from a pen drive. Same circuit is also used for receiving telecast of FM band Radio with digital Display of frequency.
You will need MP3 Kit.
Kit include MP3 Card with Digital Display, USB port, Remote Control and connecting cables as shown in the fig below :
You will need IR (Infra Red) Sensor that is commonly used in TV, DVD Player, etc.
You will need Power Supply Source of 5V. Power Supply Source can be 4Pcs chargeable Pencil Battery for portable use or you can make your own regulated power supply for mains using 9V transformer, rectifier and 5V Regulator IC 7805.
You can also use SMPS type adapter of 5 Volt 1A. which is commonly available for mini cd Player or ipod charger. In that case you don’t need to use Regulator IC.
500 MA current is enough if you are not using an Amplifier Circuit. If you wish to use Speaker then you have to use Amplifier Circuit.
MP3 Player with Digital FM Radio Receiver
For Simplicity of the Circuit we have omitted panel button which is marked K1,K2,K3 and K4 on PCB. All function is included in remote.
Circuit Diagram of this project will be available soon.
You have to Connect an Arial for proper functioning of FM Radio. Soldering point of Arial is given on MP3 board.