A day at the beach can involve hauling a surprising amount of gear, from coolers, towels, blankets, chairs, and umbrellas, and if children are involved the amount of beach stuff needed seems to go nonlinear very quickly. Some turn to beach carts with large, low-pressure pneumatic tires, but even that seemed like too much work for [John] who built this remote controlled cart for his summertime needs.
The cart is based around an old cargo rack from an e-bike. To mount all of the robotic components, a sheet of plywood was cut and attached to the underside. Two motors are used to drive the rear wheels independently, allowing for differential steering rather than adding the complexity of a steering system. Some safety features are built in to this design as well, including lights for night driving, a start button controlling a relay for the motors and electronics, and a time-of-flight sensor to stop the robot if it encounters an obstacle.
The ESP32 at the center of the build ties all of the electronics together, and a smartphone app lets the user remotely pilot the rover. It’s not autonomous (yet) but a fair alternative to dragging all of one’s beach gear through the sand without any assistance. You could also minimize your excursions through the sand by timing your visits at high tide, but [John] is out on the Great Lakes so this may be of marginal utility here.
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This articles is written by : Nermeen Nabil Khear Abdelmalak
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