Our group has accomplished most of its individual objectives, except when those objectives are combined all together. Each addition to the original hovercraft worked as originally planned: analog-controlled directional/propulsion motors, remote-controlled on/off switch, and failsafe idle mode when hovercraft loses the transmission signal. However, our group did not anticipate the noise that would be generated by the three separate motors at the onset of this project. Therefore, during all individual testing phases, everything appeared to be working properly: the transmitter and receiver would send strong well defined signals, the directional motors received the correct analog values, and the main motor powered up and down currently. Once however, we placed them all together, the noise generated by the circuits, despite our best attempts at quieting it through numerous capacities, diodes, and separate power supplies, was too much for the MCU and receiver to handle.
Once the main motor was activated, it was virtually impossible for the rear motors to receive their correct values. Because we separated the power supplies, the hovercraft became weighed down with the additional batteries and seized to properly hover. And furthermore, the additional batteries, would not fit inside the original case.
We could not use the same
transmitter as the original either, because we needed to read in analog
inputs. The transmitter included with the original hovercraft was
rudimentary and there was no realistic way for us to place two
potentiometers within the assembly. However, we did decide to use a
the potentiometers from a Playstation2 controller instead, which provided
very nice spring-centered inputs for each of the two motors.