Radio Data Link

Overview

Objectives/Goals My Goal is to construct a reliable radio data link operating in the 70cm Amateur Radio band to be used to send commands and telemetry for a range up to 50m. The data link will allow the transmission of fixed-length messages of up to 32 bytes with error detection but no error correction (other than retransmission). Primary use will be to control a future robot project. Messages will be displayed on a 32-character LCD. Methods/Materials 1. Construct transmitter and receiver. 2. Test ability to turn TX on/off and detect carrier at the RX. 3. Transmit and detect a fixed bit-stream. 4. Transmit and detect a multi-character message. 5. Test framing.. 6. Test checksum algorithm. 7. Transmit arbitrary messages. 8. Demonstrate simple robot control. Materials: 1. One Boe-Bot with a propeller chip on it 2. One small 3"x2" LCD display 3. One eight pin receiver 4. One six pin transmitter 5. 11 small 3" wires 6. One display cable Results Demonstrated the ability to send messages reliably for a range of 50m (the limits of my test area # more range is likely possible). Verified all functions including error-detection. Conclusions/Discussion The radio data link was successful and met the design goals.

Competition history

• CSEF 2009 Electronics & Electromagnetics · Entry J0916

Resources

• CSEF project summary ↗

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