Static web page for transmitting an RF signal which opens the Tesla charging port. It uses WebUSB and HackRF. The signal is generated using ASK/OOK modulation from the following bit pattern:
101010101010101010101010100010101100101100110010110011001100110011001011010011010010110101001010110100110100110010101011010010110001010110010110011001011001100110011001100101101001101001011010100101011010011010011001010101101001011000101011001011001100101100110011001100110010110100110100101101010010101101001101001100101010110100101
The symbol rate is 2500 bits/second.
Credits to @IfNotPike and this tweet.
The web page also works on mobile Chrome. In the following demo I am using a Pixel phone and HackRF connected to it with USB OTG cable:
You can see it in action here:
Try it yourself at https://xakcop.com/tesla-opener