Wheels, wiring and Bluetooth
6/9/18
Today the attention turned to the back wheels. They were beginning to sag, so the question was, how could we do this better? After some analysis, it seemed as though the support was too long, resulting in it sagging under the weight of the robot. After a few different prototypes experimenting with wheel type and placement, we adjusted the design, simplifying the connection point to the body, and also shortening the length of the support shaft. We kept the vertical position of the wheels, also brought the wheels closer together. This helped stabilise the wheels, and also meant smoother, more steady movement. We began to consider exactly what type of environment we wanted the robot to operate in. We decided an outdoors setting over terrain on the rougher side would suit the design well. We also decided it was time to wire the sensors up. We ran cables from each sensor to the NXT brick, assessing how this fit with the design and sensor mounting rig. This wiring up went well, with a little patience required to get the front cables mounted behind the sensor support rig. After this process, we had all 3 sensors wired up, and motors successfully connected. Towards the end of the lesson, Josh figured out how to connect the robot via Bluetooth, eliminating the need for the USB cable connection when loading programs.
Today the attention turned to the back wheels. They were beginning to sag, so the question was, how could we do this better? After some analysis, it seemed as though the support was too long, resulting in it sagging under the weight of the robot. After a few different prototypes experimenting with wheel type and placement, we adjusted the design, simplifying the connection point to the body, and also shortening the length of the support shaft. We kept the vertical position of the wheels, also brought the wheels closer together. This helped stabilise the wheels, and also meant smoother, more steady movement. We began to consider exactly what type of environment we wanted the robot to operate in. We decided an outdoors setting over terrain on the rougher side would suit the design well. We also decided it was time to wire the sensors up. We ran cables from each sensor to the NXT brick, assessing how this fit with the design and sensor mounting rig. This wiring up went well, with a little patience required to get the front cables mounted behind the sensor support rig. After this process, we had all 3 sensors wired up, and motors successfully connected. Towards the end of the lesson, Josh figured out how to connect the robot via Bluetooth, eliminating the need for the USB cable connection when loading programs.
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