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walker-working

I've had trouble getting enough torque out of the tiny HS50 servos that were fitted to the walker, so last night at #BuildBrighton I added a pair of meaty old 3003's from an old antweight robot. It works, buuut I need to make some mounting brackets. Video taken on my iPod touch by Adam, who is trying for the "Bourne Identity" shakey cam effect.... but even so you can see the organic wriggle of the legs.

Adam also had a bash at creating the walker mechanism using Lego mindstorms.



(Originally I put the video on Vimeo, but 12 hours after uploading it's still sitting in a queue for conversion... so good old YouTube did the job)

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ready for action

Just put the finishing touches to Meathammer
The whole setup works quite well.. I'm off to modelworld to run it through it's paces a couple of times.
The weak bits look to be the drive shafts, which I'd like to bulk up to at least 20mm and have some better bearnings for.
The battery packs are also a bit weedy, but we'll see how they last, and may invest in a few high output packs.
Of course it could also really do with running the 4QD 35's or 60's instead of the electronise speedies.. but we'll see how it performs and make amends.
Since I took this phot I've added a hinged scoop, so we can get under other feathers... it's a popular design in the states, should work over here.
I only need to wire in an LED to show power and then we are ok to roll.

The weakness of machines

All of the robots I have built have failed in fights, and usually at the axles/wheels, it's like a running joke.
So why should it be any different with this featherweight?
Meathammer was designed back in 2005/06 when using 4 drill motors was a bit of a novelty... it was made more novel still by mounting the epicyclic gear cages directly to the chassis, which unfortunately sends all the drive shocks back through the gearbox.

The original version ran for a number of fights at modelworld 2006? and even won some, especially the sumo, which favoured its very low profile.
I've just rebuilt the gearboxes with all metal gears, and tested it, and it seems it should last for at least one fight… but as I put it in the car after testing, I noted one of the wheels had nearly fallen off. Mark that bolt for Lockthreading!

All this got me thinking if I could make something less likely to lose a wheel, break a gearbox etc
I have a huge pile of bits and bobs that were destined for heavier machi…

Fake Plastic Trees...

So, for a bit of light relief I bought a few of Justin's LED Christmas tree kits.


I think the original idea was to have a relatively easy kit to put together on Saturday workshops in the run up to Christmas, but they seem to have become quite popular with all manner of folk.


Anyway, the kit is based around a couple of well made pcbs, a bag full of components, and the simple instruction that +ve is UP.
It took about 10 mins to solder all the bits together, and with a huge amount of satisfaction over the end result.

Justin and his Christmas tree kits can be found here: http://cyber-lane.com/
The Build Brighton Christmas workshops will be running each Saturday from 30th November to 21st December from 10am – 2pm. Entrance is completely free. Kits are priced between £2 and £5.


#BuildBrighton can be found here: http://www.buildbrighton.com/blog/