Alright final-ish lawn mower specs:
Synopsis of the report: The design consists of an autonomous lawnmower with a 1500W three-phase ac cutting motor (20" blade), a single VFD controller, 4500w inverter, four-wheel-drive system with (4) 100W DC drive motors (7 height adjustable... not easily adjustable yet...
), a modular 3d designed chassis, and a 24V battery solution. For the sensor array, the robot deploys multiple Ultrasonic sensors for obstacle detection and avoidance, a multi-axis accelerometer/magnetometer for directional control (0.1-degree accuracy) and event detection (object strikes, anti-rollover), and a weather sensor for inclement weather detection. The robot also houses an internal GPS unit with a connection to the on-premises GPS base station for correction data to achieve the 10 mm placement accuracy since the closest public GPS station is out of range at 75 miles away. Finally, for the code, the if-then statement lines will control safety, object interaction, traction control, and GPS/Compass data-logging and comparison for route-following.
With that said, that's the plan. We had to resubmit our sensor order so I hope it gets approved again. Also, design contingent on how ambitious I still feel after next semester between the race-car and every other project going on personal and academic.
I think retail for the parts is about $5000 dollars so far. No labor cost included. GPS/magnetometer components around $800.
Now I'm looking into getting into testing and adding the project-specific sensor output values to my previous navigation code from the maze solving robot I worked on this semester. That consisted of around seven pages of code for the obstacle combinations, x tracking, y tracking, pointing direction tracking, three sensor inputs, and left and right motor forward and reverse. :O