Shock collar code

• for 433 Mhz transmitter hooked up to GPIO0 on Raspberry Pi

Hardware

• "Rechargeable and Waterproof" + a happy dog on the box.
• https://openshock.org/hardware/shockers/caixianlin/
• baudrate: 4 kHz / coderate 1 kHz. Measured with logic analyzer on receiver.
• Transmitter FCC: https://fcc.report/FCC-ID/2A4FQ-880
• Some simple teardown: https://www.youtube.com/watch?v=1ru_XgajV7o