Hello all !
This is my first post on this forum, thanks you everybody, you have helped me each time. But this time, I am not able to find a satisfying solution on my own, nor by searching the forum or google...
So, I want to be able to emit and receive (not at the same time) from Raspberry PI in 433 Mhz.
If I try directly connecting 433Mhz module to Raspberry, it works, but the range is very low (only few meters).
So I decided to try with Arduino. And wow, this is a lot better ! I am able to receive the signal from a remote controller at maximum 40 meters, which is far better !
So then, I decided to build a "433Mhz interface based on Arduino" in order to provide a serial interface, where Arduino displays data from the 433Mhz receiver on the serial Tx, and is able to send to 433Mhz emitter from Rx. It works well, but the range is not good at all....It is rougly 2/3 meters maximum.
The question is...why ?!! Do you have any idea ? What can I check to find out why it is not working if I connect the Arduino to the raspberry (I try to power Arduino using another power supplier than the raspberry, with no luck).
The interconnexion is :
5V(+5V and GND) == Arduino =======(serial line, RX, TX and GND)====== Raspberry === 5V (+5V and GND)
Thanks a lot !