Wireless communication with FM Transceivers

Where do we hide all those cables when we want to monitor switches, temperatures,  motion detectors, lights etc... ?

There is no need for cables since we could use wireless transmission like in this project.

Basically, you can use any AVR MCU that comes with a USART to interface it at an Transceive Module.

Like in my other projects I#m using my standart ATMega32 prototype board wich has already a socket for the Easyradio Transceiver so I can decide wether I use the RS323 cable solution or the wireless Transceiver module to communicate with other partners.

The code is written for the ATMega32, but with some minor changes it will work also on other ATMegas.

This project was mainly build as a remote doorbell so I could “hear” and “see” the door bell whereever I carry my battery powerd device with me, like in de basement or the garden etc.

Meanwhile I also monitor a motion detector and a ultrasonic distance sensor which tells me that the car is still in the garage. :-) No, I’ve planed an automatic garage opener when my car, which will than have also a Transceiver arrives at the house and the garage should not open while there ist already a car parked inside it.