I'm working on a quadcopter project. The quadcopter will be quite autonomous, but sometimes I'll need to send some messages to it. So I built a simple, one-way RF communication system based on two simple 433 MHz modules.
It works, but when the propellers of the quadcopter approach the take-off speed it begins having trouble in receiving the RF messages, and after a certain speed it stops working.
I suppose this is due to the electrical noise produced by the four little brushed motors. Yesterday I increased a little the transmitter's voltage, and that increased a little the minimum antenna-antenna distance with the motors on, but that is far from enough.
What else could I do to increase the transmitter's power?
Thanks in advance
P.S.: Here are my RF modules: