ScoutBot 1402 (an Outdoor Robot)
ScoutBot 1402 is a Robot Designed to take camping with Boy Scout Troop 1402.
It is a rather large and heavy Robot, it stands about 5 feet tall, and weighs in at about 300 pounds.
Currently a work in progress, the main focus of construction right now is finishing up the mechanicals. It does not matter how good your software and electronics are, if you have sloppy and faulty mechanics, the robot will not perform well. You will no doubt notice that work is being done on the arms, as they are still bare plywood.
(on a side note, to make things sound way cooler than they really are, when people ask me what I made the robot out of, I tell them it is constructed from "ply-tanium")
It is a dual tracked, humaniod torso robot. It's drive train is made from Rexnord 1864 stainless steel table top chain, and is driven by a pair of 24V electric scooter motors. Even with it's weight, it can move as fast as a person does at a brisk walk.
People ask about the "tank tracks" a lot, so here is how I made the suspension system, or "bogies" as I learned they were called:
I used 3/4 inch ply-tanium to form the left and right bogie halves (I needed 4 each):
Here is how the bogie halves fit together:
And here are the assembled and painted bogies with wheels on the lower drive section:
The Drive Wheels are made from more 3/4 inch ply-tanium circle cut using a router table, and then sandwiched onto a #60 chain sprocket:
Here is a test fitting of the Rexnord Table Top Chain onto the Drive Wheels and Bogies:
You can see above that one wheelset had already been finished and painted, while the one in the rear was still bare plywood.
Here is a shot of the Drive Train Motors:
The Torso "shoulder" can rotate, and is driven by an 24V old Electric Scooter Motor, and the arms are driven by automobile seat positioning motors, but they are not installed in the main photo.
Here are the belts, pulleys and drive motor for the rotating shoulder:
Tests are being conducted under manual control, since the 'bot is large, heavy and potentially dangerous. The computer control is going to be done using a conventional PC motherboard, mounted in the lower drive unit. Since I am a software engineer by profession, I can't wait until we have this thing ready to go "live" on it's own.
A user named noonv asked to see closer images of the ScoutBot manipulators. These are fairly primative "claws", the idea being that Boy Scouts in the troop can design and bolt on "new and improved" manipulators as part of earning their Robotics Merit Badge. As with most of ScoutBot, the manipulators are made from Ply-tanium:
The gripper is designed to be rotated at the "wrist" with a gearmotor, and the "claws" close when a cable is pulled through the center axis of the "wrist". This design allows for full, unlimited 360 degree spinning of the claw without tangles. The claws are spring tensioned to "open" when the cable is relaxed. Here they are with more work done on them:
I don't have a YouTube account (and don't really want one) so I posted an AVI video here: