For Christmas, [Lior] accustomed a Baofeng UV5R radio. He didn’t accept an abecedarian radio license, so he absitively to use it as a badge scanner. Since the schematics were available, he cracked it accessible and afraid it.
This $40 radio communicates on the 136-174 MHz and 400-480 MHz bands. It uses a ancient programmable microcontroller and the RDA1846 transceiver. With the ability traces to the MCU cut, [Lior] was able to accelerate his own signals to the dent over I2C application an Arduino. He additionally recorded the signals beatific by the banal microcontroller during startup, so that he could challenge it with the Arduino.
Once advice was alive on an Arduino, [Lior] absitively to get rid of the banal microcontroller. He desoldered the chip, abrogation apparent pads to adhesive affairs to. Hooking these up to the Arduino gave him a programmable way to ascendancy the device. He got his radio authorization and implemented manual of Morse Code, and an Arduino account is accessible in the address up.
[Lior] credibility out that his abutting footfall is to accomplish a PCB to affix a altered microcontroller to the device. This will accord him a $40 radio that is absolutely programmable. After the break, analysis out a video of the afraid radio in action.
How To Properly Write Morse Code – How To Properly Write Morse Code
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