Yeah, it will be a spektrum. Moved to that a couple years back and never looked back. Very reliable, only drawback is it interferes with 2.4 GHz video transmission, but I have that covered. I'll be running 400 or 900 MHz for the video. IÃ¢â‚¬â„¢ve been giving this idea a lot of thought and it looks like I will be pushing it as a priority. After doing some research. I noticed most of the robotic lawnmowers were smaller than the standard size push mowers. I plan to do something in between. Initially it will be made of plywood. It should be a fairly easy build. I plan to use two motors in a differential configuration as the rear wheels and coasters for the front. This will allow the mower to turn in circles. The blades will be 2 sets at 90deg at different levels to get the clipping chopped to a smaller mulching size. I plan to use just razor blades from a utility knife. It will be easy to replace when dull. Seen this on one of the designs and it seem to make sense. Most of the cutting is at the tips of the blade. The good thing about this is it will be always sharp for cutting.
I get dog crap all the time in my yard from people walking their dogs. Nothing I can do about it but make sure I have enough power to chop it up unless itÃ¢â‚¬â„¢s a big one since I donÃ¢â‚¬â„¢t plan to do much cleaning
. IÃ¢â‚¬â„¢ll be using an RC motor to power the blades so IÃ¢â‚¬â„¢m pretty sure I will have the horsepower and speeds needed. I wonder if spinning blades at 20,000 rpms is more efficient at cutting grass. IÃ¢â‚¬â„¢m pretty sure lawn mowers spin at much lower rpms. I do plan to use a chain drive to gain some torque and reduce the speed. This section will use a plain RC esc.
The drive system will (2) 135watt brushed motors from allelectronics. These I already have. I will need to work out the drive electronics since it will be differential but that shouldnÃ¢â‚¬â„¢t be a problem. The batteries used will be my Dewalt packs from my bike and a set of interface boards. I plan to use 3 or 4 of them. The good thing is; there will be plenty of area on top of the lawn mower for this. As far as safety, I can put a tilt switch to shut down the mower. It will have wood sidewalls so things wonÃ¢â‚¬â„¢t be flying around at high speeds. I plan to drive it around like a video game while indoors away from the noon day heat. It should be a lot of fun this way. IÃ¢â‚¬â„¢ll put the video antenna in the attic so I will have good video coverage of the yard.
Improvements that will come in time would be a servo head tracking video camera, infrared lights for mowing in the dark and a gyro for cutting straight lines. Maybe IÃ¢â‚¬â„¢ll put a speaker with voice changing properties or a horn setup for nosey kids. That should freak them out. It would be a robot to them
. Eventually I can put some intelligence on boards such as going straight for a certain distance and stop. That way I donÃ¢â‚¬â„¢t have to pay too much attention to the driving but still get a quality cut.