I'm trying to build a microcontroller based FM transmitter which can change frequencies on the fly (88 - 108 Mhz) and is able to transmit 20-30 meters to cover my house. I know I can do this with analog c0mponents only, but I want to build it using a micro for educational purposes.
Basically the microcontroller will sample an audio signal or will receive that audio signal through Bluetooth and will output a signal to the RF frontend for FM transmission.
I have basic knowledge of electronics but I'm new to the RF domain. Could you guide me to build the RF frontend? I imagine I need a configurable oscillator that is able to communicate with the microcontroller to set the carrier frequency and modulate a signal received from the microcontroller (through DAC?) Can you recommend me any components or do you have links to similar projects?
P.S.: I've seen this can be done with a Rasberry Pi, but I wish to use a simpler microcontroller, perhaps an NXP LPC13xx or LPC17xx.
Thank you
Basically the microcontroller will sample an audio signal or will receive that audio signal through Bluetooth and will output a signal to the RF frontend for FM transmission.
I have basic knowledge of electronics but I'm new to the RF domain. Could you guide me to build the RF frontend? I imagine I need a configurable oscillator that is able to communicate with the microcontroller to set the carrier frequency and modulate a signal received from the microcontroller (through DAC?) Can you recommend me any components or do you have links to similar projects?
P.S.: I've seen this can be done with a Rasberry Pi, but I wish to use a simpler microcontroller, perhaps an NXP LPC13xx or LPC17xx.
Thank you