Ryobi 40v Robot Mower With 40v Trimmer Whiskers By Jstarne1/ Starnes

Thank you for the suggestions. I also plan to use trimmer heads to " precut" the higher grass and I believe I will mount them on the front corners so they act like roomba whiskers trimming close to objects.

The chains are only for driving the rear wheels and motors will be mounted above the rear wheels at the highest point away from the ground to try and avoid sucking in grass or whatever since they are air cooled. The trimmer motors and main mower head is the normal one that comes with the donor mower I am using to start with.

So I an brainstorming options for yard location orientation. I am considering using RFID stakes in the soil with a antenna pointed at the ground to read them. This way not only can I create a invisible border around my property but I can also mark areas like a charger station , flower bed or anything else needing to be marked.

$2.36 each for 100

https://www.adafruit.com/products/1483

Please share your opinions and suggestions, it helps the creative process.

OK tiny update, the mower arrived last night but I have not unpacked it yet because there is no battery to test it with. I will have the small 1 ah batteries that will come with the weed eaters tomorrow, but I really need a couple ( if not 4) batteries with balls. I ordered one 40v 5ah capacity Ryobi for 139.99 with free shipping. I would have built my own packs but they would have been just as much ( realistically more) to build than buy this part, so I went OEM. plus I get a automatic 5 yr warranty and an additional 3 if I register them online. I could only swing 1 battery this week but in a couple weeks I can grab another and I will update everyone on the collection of equipment as this moves forward.

Tiny update on shipments: The 40v weed trimmers and the standard sized 40v batteries have arrived. I haven't unboxed everything yet but I will take some snapshots when I do. Also the servo city order arrived for the sprockets and chains to connect the drive motors ( gears) to the hub of the wheels. As for the 5ah extended capacity 40v battery I ordered, it does not show shipped yet, but I look forward to having it by Tuesday next week.

Ok so I unboxed the lawn mower which is beautiful by the way. Now that I am looking at the mechanisms for height adjustment I would really like to keep it. It's just so easy to use ! So that means casters for the front are probably out. The next solution is to replace the front wheel with a 8 inch diameter omniwheel. I would print this but that is bigger that my print bed. Unless I can chop up a file. I also realized I bought a couple gears I potentially could have printed... shrug.. these are solid so that's a plus.

I particularly like this stand up feature , I will see if this is something I can keep when I disect the handles and frame away from the mower body.

I measured out the wheels. Like I thought they are not the sizes that the website says. They are off by an inch. So I need two things. First is a set of rear wheels with enough grip to drive the mower and front wheels that can roll side to side. That means I need an 8 inch set of omniwheel to let this guys front end slide left to right for east turning.

8" Dualie Plastic Omni Wheel

Specifications: Diameter: 8 inches Width Across Middle: 2.04 inches Width Including Screws: 2.22 inches Bore: 1.125 inch diameter bore, 1/4 inches deep on either side, 0.95 inch diameter thru hole Bolt Pattern: 6 hole on a 1.875" diameter bolt circle Body Material: Black Polycarbonate Load Capacity: 120 pounds (rollers don't spin pas this weight) Weight:2.2 pounds Number of Rollers: 36 Roller Material: Black SBR Rubber Roller Durometer: 80A Roller Bearing Material: Brass Roller Axle: Steel Dowel Pin Roller Diameter: 3/4 inch Repairable by removing interior #10-32 screws and perimeter M3 screws Included Hardware: Four - 8" Plastic Omni Wheel Webs Thirty-Six - Black SBR Rollers Thirty-Six - 1x1/8 Steel Dowel Pins Sixty-Four - Omni-roller Sleeves Nine - Individual M5x0.8 x 20mm SHCS Twelve - Individual M5 Nylock Nuts Three - Individual #10-32 x 2-1/4" SHCS Thirty-Six - Individual M3 Nylock Nuts Thirty-Six - Individual M3 x 10mm SHCS Three - 1614ZZ 3/8" id Bearings

$74 plus shipping

Here is an 8 inch omniwheel from andymark.com , does anyone know of a better price from another dealer?

Ok I ordered two Dualie 8 inch omniwheel for the front of the mower. They should be here from the 3rd to the 5th.