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In an effort to find a vaguely affordable, 5v two-way radio solution with a decent range, I’ve been attempting to port the simplex RS-485 protocol I’ve been working on to work with pairs of 434Mhz radio transmitters and receivers.

Just a 434MHz transmitter on an ATMega32u4, for testing purposes.

Just a 434MHz transmitter on an ATMega32u4, for testing purposes.

Each node is to have a transmitter and receiver which can be enabled or disabled from code, following the same scheme as the 485 transceivers used on the wired network, and the same protocol can then be sent over wire and wireless alike.

A lashed together transciever made from an Arduino ProtoShield and a 434MHz transmitter/receiver pair

A lashed together transciever made from an Arduino ProtoShield and a 434MHz transmitter/receiver pair

However, at the moment I’m simply experimenting with the hardware to see if I can get a stable, long-ish range link using various Arduinos (Arduinae?) as my development platform.

For the curious – the JST connector on the micro board is for power, and is hooked up such that the normal polarity for a LiPo battery lines up with the GND and RAW pins on the board, hence the odd orientation.

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One thought on “434MHz Experiments

  • June 17, 2013 at 2:08 pm
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