eni23 / usbrelay

Most effortless USB-Relay

USBRelay

This is the most simple USB-Relay possible. It Uses an ATTYINY85 Digispark Board and an simple Chinese relay to complete the Task.

Protocol

Request: 1x char

TURN_OFF  = "0" or 0x30
TURN_ON   = "1" or 0x31
TOGGLE    = "2" or 0x32
GET_STATE = "3" or 0x33
IDENT     = "9" or 0x39

Answer: 1x char

STATE_OFF  = "0" or 0x30
STATE_ON   = "1" or 0x31
IDENT      = "r" or 0x72

Schematics