Before A 3 months Ago , one of my friend ask me to build a Simple FM transmitter , he Would to transmit An Audio File from computer and PLAY it on any radio channel , By adjust the frequency of receiver as same as transmitter frequency
I searched on the internet on for this circuit , But I don't find my target .
There were some circuits with many component , or with miss component , so I search more and i Found one of the amazing method, effective and easy to use , with few component .
and for easy interface with , I added A graphical LCD Nokia 5110 PCD8544 , and added a Potentiometer to tune the transmitter Frequency .
let's see what we need :
Step 1: Material
The component we need for this device :
1)Arduino Board , Uno for example.
2) LCD Nokia 5110 PCD8544
3)FM Transmitter module V1.0 ElecHouse
4)Solderless Jumper Male-Male
6)potentiometer (50K , 500 Ohm)
7)Battery 9V With Holder .
Step 2: First Part : LCD Nokia 5110
I wrote An artical about it in arabic language on My Blog
And the best way to program this series of LCD Is U8g library , It's support many LCD Controller , You can read More About it in this link
this LCD comes with different modules , like adafruit , sparkFun , chines stores , No matter what you are using , Just pay attention to Pinout and it's connection To arduino Board .
For sparkFun LCD you must read this quick start Guide . and for adafruit LCD you well need CD4050 TTL Converter
I used LCD 5110 which is compatible with 5V Logic input ", you can buy one like this from Ebay store .