Serial port available on the iRobot Roomba vacuum cleaner.
7 PIN MINI-DIN FEMALE at the Roomba.
|1||Vpwer||Roomba battery + (unregulated)|
|2||Vpwer||Roomba battery + (unregulated)|
|3||RXD||Serial input to Roomba|
|4||TXD||Serial output from Roomba|
|5||/DD||Device Detect input (active low) – used to wake up Roomba from sleep|
|6||GND||Roomba battery ground|
|7||GND||Roomba battery ground|
Note: Direction is Roomba relative Computer.
Note: The RXD, TXD, and Device Detect pins use 0 – 5V logic, so a level shifter such as a MAX232 chip will be needed to communicate with a Roomba from a PC, which uses RS232 levels.