Ted 2.0
After determining that the 7.2 volt battery pack wasn't going to go into Ted without a =lot= rejiggering, I decided on a a redesign, moving from the Tamiya ~2-1/2 x 6 inch chassis, to a plastic ~4-3/4 x 9-3/4 inch.
Extended the tracks a couple of inches and added a fourth road wheel. Widening the chassis made the axles useless, so each of the non-driven wheels is mounted on L-brackets using stub axles made with M3 x 20 machine screws.
Still a work in progress. I'll try to get a few photos up today. Getting ready to move and things are a little hectic around here!
Extended the tracks a couple of inches and added a fourth road wheel. Widening the chassis made the axles useless, so each of the non-driven wheels is mounted on L-brackets using stub axles made with M3 x 20 machine screws.
Still a work in progress. I'll try to get a few photos up today. Getting ready to move and things are a little hectic around here!
Comments
The new deck with the idler wheels mounted. The white panel is a patch needed from an over-zealous application of BFFI... ("biffy").
Mounting bracket for the idler wheel. This one flexes too much for my liking and will be replaced with an aluminum channel for more support.
A set of road wheels with the "stub axles" installed.
Road wheels mounted on their bracket... cobbled from a 1 inch acrylic corner protector.
Wheels and servo mounted one one side.
One side complete with track and Stamp board in place.
Is that an accelerometer on your HW Board? You have big plans, huh?
My latest robot will have plywood WHEELS...
"All right, gals, uh, listen. This is a blues riff in "B", watch me for the changes, and try and keep up?"
Looks really good ajward.
I don't understand all this plastic stuff erco. Haven't we preached the blessing and power of wood enough to get at least one convert?
Busy making wood robots,
Tony
Splinter Fi, Bro!
Here's a couple of wooden tracks for ya erco. Enjoy!
http://www.rctankcombat.com/articles/track-systems/
http://woodgears.ca/tracked_vehicle/index.html
Tony and Erco, if you guys designed SkyNet, I'd expect to see an army of plywood terminators.
@Martin_H: At least they would be environmentally friendly!
The 4 AA pack is just for balance. The 7.2 volt pack is still attached to Orville.
The configuration under the deck. You can kind of make out the flex in the idler wheels. I'm just off to the local "toy store" to find the aluminum channel.
Are you using treads from more than one set? Those seem a lot longer than the set I have.
The BS Homework Board is just a place holder for a Prop board right?
So how many boxes at a time can you new robot move? That the reason you build it, isn't it?
It's always fun to see your projects. Thanks for sharing.
Duane
The HomeWork board is staying with Ted for a while. Bob and Orville are at the head of the line for Prop boards. A new prop robot controller board is in the near future tho'!
Boxes? Heh... I'll probably try to see what kind of power Ted can develop, but the idea behind the tracked concept was to carry a wireless video camera. Looking to add wireless navigation. Ted was able to navigate via the camera, but control was through an IR connection with a Sony style remote, but it was pretty much line of sight.
Scrapped the idea of using the 7.2 volt Ni-Cd battery in favor of a 9.6 volt Ni-MH. Smaller and a bit lighter...
Encountered a problem with a weak servo... really low torque. Prolly going bad. Hafta order a few more servos to play with.
@
I hope to start posting more soon, just a couple of deadlines to clear out first...
His name is Woodrow. His chassis is plywood, his wheels are plywood. I guess I'll have to make a custom wooden caster, too.
With vacuum tube H-bridges? SOLD!
Hey, I love the smell of old bakelite radios & warm vacuum tubes, I have a nice collection. My favorite ham gear is all vac tubes.
My first kit was a tube radio with bakelite case - from Allied I believe. (Remember when it became Allied Radio Shack?)
I remember the old waxy capacitors and using my dad's huge soldering iron.
I cracked the bakelite when I tried to drill a hole to add a 1/4" phone jack. I was not happy:frown:
Swapped out Ted's suspect left servo and we're motoring again. Disassembled and reassembled the old servo and it seems just fine. (Pulled it because of low torque and now????).
Haven't replaced the plastic brackets for the idler wheels yet... and there is still a small problem with throwing the left track.
I've added a couple of binding posts and a 3-position switch for power input. Just tired of plugging/unplugging the 9 V battery and I want to be able to use multiple power sources... 7.2 and 9.6 volt rechargeable battery packs.
Film at 11.
Amanda