The I/O 24 ULN2803 Switch Board shown is a very useful accessory board that allows much higher voltage and current devices to be interfaced to the low level logic provided by the I/O24 modules. This product is RoHS.
The I/O Connector Board can be used to provide 8 switch/push buttons with LED indicators showing the status of the I/O pin. Made by Elexol.
This is a SDR 4-wheel drive remote control robot kit. It uses four powerful wheelchair motors and 35AH batteries.
This is a Pre Built robot that utilizes 4 omni omni-wheels to vector it in any direction. By changing the speeds and directions of the motors the robot can drive in any direction without needing to turn.