The 4 inch (100mm) Nexus Robot double plate aluminium Omni wheels have rubber rollers mounted along its circumference to help avoid slipping. Each roller has two bearings which allow the wheel to move smoothly and easily in ANY direction.
We offer multiple ways to convert RS232. We have 3-5V TTL converter cables, RS232 to USB, Ethernet converters, and USB to TTL converters. TTL converters allow you to communicate directly with your micro-controller or other TTL device. The RS232 to Ethernet devices allow you to bring serial RS232 equipment onto an Ethernet LAN/WAN.