Autonomous

DualGrip-NXT Rover

Sometimes I build robots that attempt to solve real world challenges.  Other times, robots are built based on random ideas. This robot is a case of solving a LEGO challenge – specifically, with their Technic tracks/treads #575518.  At no fault of theirs, these plastic tracks are slippery on many surfaces.  Great for carpets, flat areas, dirt (if you dare) – and great for turning as well.  However, when you try to climb with them,...
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Sensors & AddOns

Reviews – Mindsensors Magnetic Compass

The folks at Mindsensors were kind enough to send me over this Magnetic Compass sensor to test. The sensor serves the useful task of providing the NXT with an indication of its heading angle from magnetic North to the NXT. It uses orthogonal two-axis magnetic sensor from Honeywell (HMC1052) and provides digital communication with NXT. Click the image below to see a video showing the compass in action. I did a brief test of...
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Autonomous

DominoBotNXT w/MotorMux

This page is dedicated to the further enhancements that I have done to DominoBotNXT. For more info on the original DominoBotNXT, have a look here. One of the drawbacks of the original was that due to the 3 motor limit, it had to backup to properly place dominos. This was because the domino-placing component was tied directly to the drive wheels. So, as it drove forward, a domino would make its way to being...
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