Finalized Design

After working on the individual part for a long time, all the parts have been put together at last. The linear actuator has been set in place and working perfectly. The rotation motor and the timing belt have been also installed, but the angle of rotation is a little limited due to the uneven radius of the chair’s base at different angles. At extreme angles the timing belt becomes too taut or too loose. Both relay circuits that control the motors had also been constructed last week. Now, it has been soldered to the necessary connections and made whole with the project. Although the code and the motors work perfectly fine individually, we have encountered some problems with running the entire assembly through EOG signals. We suspect an error either in the double relay circuits or the main power source. It may be that both the circuits are damaged and they are not reacting to the signals from the DAQ. It is more likely, however, that our power source cannot feed the entire circuit –only a motor at a time.

Figure 19: The entirety of the chair assembly merged together