Well I finally beat the RFM42 transmitter and RFM31 receiver into submission and came up with a configuration that actually works.
The transmiiter is merrily sending a 'Hello World' message from one side of the workshop to a receiver on the other, the received message displayed on a AXE133Y OLED.
A document with an explanation of how it all works with pretty pictures and circuit diagrams is enclosed. Its a working setup, I am waiting for the PCB for the receiver to arrive so I can build it into a box.
The only range testing I have done so far is out in the street, with the transmitter on 434Mhz at 1mW the reception range is about 60M, thats just using loose bits of wire for antennas.
How fast the things will work I dont know yet, but 10kbps is fast enough for simple messages.
What interests me now is the RFM22 tranceiver, the code should be substantially the same, but the option of being able to send commands and receive replies all from a very compact device is interesting.
The transmiiter is merrily sending a 'Hello World' message from one side of the workshop to a receiver on the other, the received message displayed on a AXE133Y OLED.
A document with an explanation of how it all works with pretty pictures and circuit diagrams is enclosed. Its a working setup, I am waiting for the PCB for the receiver to arrive so I can build it into a box.
The only range testing I have done so far is out in the street, with the transmitter on 434Mhz at 1mW the reception range is about 60M, thats just using loose bits of wire for antennas.
How fast the things will work I dont know yet, but 10kbps is fast enough for simple messages.
What interests me now is the RFM22 tranceiver, the code should be substantially the same, but the option of being able to send commands and receive replies all from a very compact device is interesting.
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