434 MHz RF transmitter and receiver, PCB and firmware
Complete PCB design and firmware for a coin-cell remote and a two-channel receiver, designed for production.
The brief
The brief: a 434 MHz transmitter running on a CR2032 coin cell, with standby current under 10 nA, fitting a pre-designed enclosure. And a 9–32 V receiver with two 2 A outputs, latching logic, a buzzer, an RGB status LED, pairing for up to 50 transmitters, a low-battery warning, 50 m range, and short-circuit, over-current and reverse-polarity protection on every input and output. All on a board 55 mm wide.
What we built
- PCB layouts for the transmitter and receiver, fitted to the client's enclosure files
- Firmware for pairing, channel selection by solder bridge, latching outputs and low-battery reporting
- Protection circuits on all inputs and outputs
- SMD component choices suited to production
How it was delivered
Designed against the client's written specification and delivered as complete PCB design files and firmware.
Result
The client described it as a high quality, efficient product made to suit their exact needs.
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