/tags/mechatronics/Recent content in Mechatronics onHugoenSat, 09 May 2015 00:00:00 +0000/2015/05/automatic-bicycle/Sat, 09 May 2015 00:00:00 +0000/2015/05/automatic-bicycle/<p>The Mechatronics class at South Dakota School of Mines &amp; Technology has students form groups for a maze solving robot and free projects. My group decided to make an automatically shifting bicycle for our free project. We set up the bicycle to monitor the current speed and change the current gear in order to get the maximum workout.</p> <!-- more --> <h2 id="finding-the-speed">Finding the speed</h2> <p>The bicycle tracked speeds at two locations on the bike. The first was the wheel speed. This let us know that the bike was actually moving and making progress. The second location was at the crank. This let us know when the rider might be coasting or if they are doing a lot of leg work without making much movement progress.</p>