There was a handful of issues that our group faced during the creation / coding of the Redbot. One of the issues that was out of our controls was a faulty motor. In the video below you can see the first time we got the Redbot to move, with only one motor:

Our gearbot faced many unexpected problems. On Wednesday our motor gears were slightly off which meant the wheels were not moving. In addition, our wheels were very flimsy and we ended up using the wrong ends to attach them. Our tires were also too long for the robot and they kept falling off. To fix this, we replaced the 1 piece of 10 with a piece of eight in order for it to fit perfectly on the robot. We also pushed the gears attached to the motors upward so that it connected with the other gears and the wheels. As for our wheels, we realized that we were using the wrong parts for the end bits. Therefore, we used the correct parts and the wheels fit on perfectly with them. Another problem we faced was the wiring, although we coded the robots properly, only one wheel was turning. So, we connected the rotating wheel wires with the other nonworking wires. This caused the power of the working wheels to be shared with the otherwise stagnant wheels. During Thursday morning, we had everything almost running, our code was working, and we only needed to polish up some rough edges. However, when we tried to code the bumper and the thermosensor, the wires were fryed. This caused the wheels to stop moving entirely and we were forced to replace most of our damaged wires and motors in order to get the robot moving.