Weed Burning Robot 1st Prototype

Weed Burning Robot – A Prototype for Automated Garden Maintenance

This project represents an experimental approach to automating a tedious garden task: removing weeds from between driveway stones and paved pathways. The prototype, currently in an early development stage, allows the user to procrastinate and have fun instead of tackling the gardening job right away.

Current Implementation: The robot operates along a linear track of approximately one meter in length. It utilizes two standard wall mounting rails as linear guides. One rail incorporates a 3D-printed rack, while a stepper motor equipped with a matching gear drives the system along this axis. The weed burner (a modified Gloria model) is mounted beneath a heat shield to protect the electronics and plastic.

Electronics and Control: A Raspberry Pi serves as the central control unit, housed in a portable case attached to the second rail. Power is supplied via a standard wall wart, and a dedicated stepper motor driver manages the motor’s operation. Directional control is achieved through two end-stop switches, which reverse the motor’s direction upon reaching the track’s endpoints.

Safety Considerations: Given the use of high temperatures, caution is essential. The device must remain under constant supervision during operation, and a water source should be readily available to mitigate any unintended fire hazards.