# ju Receiver ## Notes to rf Protocol ### Types / Commands - `0x00 - 0x1F`: General System - `0x00`: Send Data - `0x01`: Serial Data (command represents length: 0-30) - `0x20 - 0x3F`: System Sensors - `0x21`: [MPU](#mpu) - `0x22`: [COMP](#comp) - `0x23`: [GNSS](#gnss) - `0x40 - 0x5F`: Custom Sensors - `0x60 - 0x7F`: Custom - `0x80 - 0x9F`: Not Assigned - `0xA0 - 0xBF`: Not Assigned - `0xC0 - 0xDF`: Not Assigned - `0xE0 - 0xFF`: Not connection specific - `0xFF`: Multicast (Connect request from receiver)