PCB Frontside
(click to enlarge)
Connectors Top Left to Right
J1 purple/purple – speaker, gray/white – left motor down switch
J3 – main brush motor
J4 – left motor and encoder (32 pins per revolution)
J9 – dirt sensors
J10 – to top panel, right side IR wall sensor
J16 – right motor and encoder
J17 black/red – vacuum motor in dust container
J18 black/green – side brush motor
J19 black/yellow – right motor down switch
J15 black/red – battery charger connector
Connector Bottom
J11 7 pin serial port connector 57600 baud 8-N-1
PCB Backside
(click to enlarge)
Connectors Left Top
J7 red/white/black – battery
J25 – bottom battery recharge pads
J2 – stairs sensors
Connectors Left Bottom
J22 green/green = front wheel down switch, purple/purple – front wheel down sensor
J8 – front bumper board
Connector Right Top
J24 – stair sensors
Connector Right Bottom
J23 red/blue/black – front bumper board, IR receiver: red – vcc, blue – IR signal, black – grd