RoboLawnMower

Brush cut robot
https://www.brielmaier.com/en

https://thekobi.com/meet-kobi/ automatic lawn mower

https://www.youtube.com/watch?v=rKy19U_BiPU  http://www.evatech.net/22T2009.php  Hybrid robot 22T series has been engineered to perform tasks where it is too risky or uncomfortable for humans. The 22T series are commercial grade units. 22T series will reduce the labor cost associated with slope mowing. They have lots of power and rugged tracks to climb hills. They can handle very steep hills, ideal for highway mowing, water reservoirs, dams, rough terrains, and it can be custom built to meet your needs. There is so much muscle on the drive system that it allows the GOAT to climb steep inclines. The GOAT's aggressive tracks make this unit useful on all terrain. The response of the brain is smooth and accurate. Unlike most hydraulic units, the Hybrid GOAT generates it's own electric power. It is also environmentally friendly, fuel efficient and does not contain any fluids that could be harmful to your lawn. It is safe, easy to use, easy to mantain, and very reliable.

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Connect RS485 nodes around a perimeter and install InfraRedLeds forming a matrix of beams which together with RateGyro2 will help orient the lawnmower.

Automated grass cutting around macadamia trees
Install a guide wire around the base of the tree in a circle so that extends by 3cm around the tree. Place the metal detector sensor in the nose at the front of a custom robotic lawnmower that is powered by battery. This prevents the lawnmower from colliding with the tree.

Controlling weeds in plantations
Build a sturdy four wheel based.robot. Attach a rod on a 3D-swivel point so it can move from side to side. At the end point attach an electric motor directly to a cutting blade. Walk behind it while steering using RC control.

Four wheel robot
Build four wheel robot with blade in middle that can slide from left to right. The robot moves in a straight line in the plantation between the banana trees in the line that has no banana leaves. Banana leaves are cut so that only one line has a mulch. Place multiple ultrasonic sensors 50cm in front of the blade that maps out the contour to determine the minimum distance the blade can be from the ground.

Place guard ring around blade
Place a guard ring around the cutting blade. Place multiple contact bump switches around the guard ring to detect when colliding with ground.

Bluetooth
Attach two BlueTooth modules to either leg of the human operator. As he walks forward the the BlueTooth module automatically steers the robot forward. The operator can move the cutting head from in three dimensions.

Contact switch
If the robot though does bump with the tree a contact switch is pressed cutting the power to the motors and alerting the farmer for further inspection.

Links

 * Tracked vehicle Diy tracked vehicle construction.
 * RoboTics, SlAm , RateGyro ,  RateGyro2