SCOOBA 390 motherboard. Main circuit. (Original iRobot)
14.4V Replacement Battery for iRobot Scooba 5900 5800 - Newegg.com
iRobot Scooba 390
2021 Pcb Motherboard For Irobot Roomba 500 600 Series Vacuum Cleaner Replacement Circuit Board Mainboard With Timing Function - Vacuum Cleaner Parts - AliExpress
Vacuum Cleaner Motherboard For 890 880 870 860 805 Circuit Board For Irobot Roomba 980 960 Vacuum Cleaner Parts - Vacuum Cleaner Parts - AliExpress