Traveling 3.7MPH, this kayak allows disabled riders to control directing and speed via a "SIP or PUFF" straw apparatus. An Arduino board monitors the straw's activity and moved the boat accordingly. "[The Arduino] sends appropriate Serial Commands to the Motor Driver to operate the two Drive Motors. Split-second (0.1 - 0.6 seconds) Sips and Puffs control Left and Right Turning, respectively, and slightly longer (0.6 - 2.5 seconds) Sips & Puffs control REV and FWD movement. Even longer Sips and Puffs Stop the motors or command them equally to Full Speed. Steering is accomplished via differential motor speed."
The most interesting option for this Kayak is the remote control override system. If a "Safety Observer" sees there may be an issue, they can take over control of the boat.
I am not sure of this kayak is available for purchase, however the creator [Mark] claims an entire system costs approximately $1300 USD. Not a bad price. The kayak is also equipped with two outriggers, one on either side, added for stability.
I am not disabled, myself, but this kayak looks like it would be fun to ride. I went kayaking a few years ago, and was completely wiped out after a while, but cruising around in this one seems like it might be more fun.
Mark uses a motor driver that costs $420 USD to control 2 Min Kota Trolling Motors, does it seem a little expensive to you?
Dig