NUEDC-2018-F FM-Microphone

This a repository contains an implementation of NUEDC-2018-F subject.

It is realized by STC12LE5A60S2 microcontroller and RDA5820NS FM transmitter/receiver chip.

Status

Won first prize.

Abilities

• Transmitter powered by two AA batteries.
• Analog FM, carrier frequency range 88MHz to 108MHz, max drift 75kHz, Audio bandwidth 40Hz~15kHz.
• Antenna length less than 0.5 meters. Ordinary FM receivers can receive signal transmitted by this transmitter. No significant distortion.
• Channel spacing 200kHz.
• A two channel receiver, up to 10 meters transmission distance from transmitter.
• Receiver outputs up to 0.5W to the 8-Ohm speaker.
• Two Transmitters can working simultaneously.
• Two Transmitters can perform conflict detecting.

Development Enviroment

Code::Blocks and SDCC. Linux, Windows both works.

STC-ISP software has a opensource implementation called 'stcgal'.

License

Don't use this repository to MAKE MONEY!

For other usage, then WTFPL!

Author

Kongou Hikari (金刚光) [email protected]