Team Saint Robot Builds

Team Saint Robot Builds

Rather than having lots of threads for the different. builds that Team Saint will be doing I thought I would have just the one.



What to do with an old kettle :?: answer make a robot out of it :idea:

http://i569.photobucket.com/albums/s...C/IMGA5706.jpg


Spliting the kettle in half so I can cut out the old steel floor was a lot harder than it sounds but with some patience this was done the plastic base of the kettle was made of poor quality plastic so only the original outer ring is going to be used. the center is Polycarbonate about 6mm.

http://i569.photobucket.com/albums/s...C/IMGA5701.jpg


The motors are from Ebay I have no idea how good they are going to be the spec is about 1000rpm spindle speed with a 4mm output shaft, the wheels are from Technobots, I had to re-tap the grub screw holes and fit bigger 4mm grub screws as the original didn't seem up to the task they are 73mm diameter this gives a theoretical speed of 13.75Km/h :uhoh: But the motors are so small I think 8Km/h would be the top speed.

http://i569.photobucket.com/albums/s...C/IMGA5699.jpg

I haven't uploaded much with the build recently so here is an up date for you all.

the speed controller is the Sabertooth dual 12A, this is really overkill for the motors that wouldn't pull half that at stall conditions. but for team Saint it is about as small as we go!

http://i569.photobucket.com/albums/s...ps91cdfad0.jpg

Saturn 2.4gHz receiver is used these seem to work well and bind quickly.

http://i569.photobucket.com/albums/s...psae5554b5.jpg

The Battery is made up of 10* 1.2v AA 2600 mAh cells they work very well.

http://i569.photobucket.com/albums/s...psef16643e.jpg

In the test today of the robot drive it went well but I may need a gyro to dampen down the steering, dose anyone know the best to use for this.

Your robots are awesome! This has inspired me to try and finish the Roasting Dish of Doom for Barnsley.

Why thank you David the robot you are building sounds inspired :D

I have a video of the first test if anyone would be interested



http://www.youtube.com/watch?v=D7P5bkQiDmA

Make it a melty brain FBS!

LOL that's brilliant and yes add the eyes

and also if you dont have a name my other half suggested Teabot as in teapot if you hadnt gessed

That's really cool, you should have steam come out the spout.

Your robot inspired me to do a load more on Roasting dish of Doom!!! Was at it for 4hrs last night!


http://i174.photobucket.com/albums/w...pscfc90c47.jpg

That is such a good idea! Oven ready armour, will you get another dish for the top or a plastic roast to finish the the look?
I love it when people think laterally. What else could we do?
Teapot the terrible!!! :uhoh: :uhoh: :uhoh:

Yeah I'm thinking about a baking tray lid to finish it off with somthing on top lol. I'm struggling to come up with a weapon though. I'm gonna squash in a battery and a speedo somehow n it should be good to go! I have more ideas about a Pressure Cooker of Doom to fight spinners and stuff as they look pretty beefy. But that needs work lol. I also thought I could move up to heavyweight with The Dishwasher of Doom but my fiance says she will end me if I go that far :lol:

What speedo do you have it looks like a posh one. I also have ideas for other items from daily life that would make good robots such as old lawn mower grass clippings box, some sort of big biscuit tin / chocolates tin, pc case, metal tool box, one of those mini safes you get from argos if you cut the door off and use what's left. The possibilities are endless! I keep seeing stuff and making a mental note lol.

The most perfect one I've seen though is an AP Case. You can get these Motorola wireless Access Points in warehouses, and when they're in chill / frozen they put them in these cases that have a ready made lid etc like this:

http://www.scotttorborg.com/turtlecam/buoy_box.jpg

it's like a pre-made metal tin with screw on lid.

weapon a toasting fork on the front or carving knife on an axe arm a bit like the Psycho the film.

The Kettle motors are powered by a Technobots speed controller the Sabertooth dual 12A, I use this with 2 GR01's in Gabriel. as long as you keep the volts down to the rated amount they have worked fine. They are over kill for the Kettle as it's motors don't draw that kind of current under stall conditions, but they seem good quality at a good price.
I love the idea for the pressure cooker as that would make a good Full Body Spinner. also a mini safe, lets hope someone will make a few more.

A toasting fork! I'll get on it now! I'm gonna order one of these fancy Sabertooths, it has everything I need and looks pretty cheap. Going to go for the 12Amp job I think and see how it goes. Is your battery off Ebay? It looks like a Tamiya racing pack with that connector on lol. All I need to get now is a 12V charger with a Tamiya connector on.

Quote:

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Originally Posted by Max

That's really cool, you should have steam come out the spout.

---

Try taking a safe steam generator out of a Thomas toy.

I found that with 10kgs of weight, 12v drills on 12v that the Sabertooth 12a's current limiting kicked in when you drove it hard, so you get a little stuttering.

Luckily the limiter resets quickly so it's not too noticeable but worth considering.

So far I haven't had any issues with the 12A unit but I would say if brute force was the main weapon then you are going to find the limits of the speed controller soon. If you have a 14.4v unit running at 12v you should not find too much problems as the current draw would be less than the specification for the motor. providing you don't get stall conditions you should be fine. Gabriel has a 4:1 reduction after the gearbox because the wheel diameter is a little under 400mm so the motors on Gabriel are driving the equivalent of 100mm diameter wheels. after a fight the speed controller is net even warm. But I do drive quite slowly both on the road and in the arena. :mrgreen:

Yeah I have the 2 x GR01's and am just using a 12v tamiya style racing pack. It's all pretty low tech, so I was just looking for anything to look after the 10A or so the motors want to wander round the arena. To be honest I don't expect to be winning fights I just wanted some fun and to have a laugh with it all. :lol:

The Sabertooth was rated at about 15A and the next one up was about 25 I think. I wasn't sure whether to just try the 15 n if I have problems will send off for the bigger one?

I looked into 2xesc and v tail mixer but liked the simplicity of Rx -> Sabertooth -> Motors

Done a bit more on the Kettle robot

In this image you can see the battery box with the battery retaining strap,
on the left of the battery pack is the removable link position.

http://i569.photobucket.com/albums/s...psf40be131.jpg

With the bottom level about finished, time to start the next level this is made from 6mm polycarbonate,
I had the LED strip so I fitted the pretty lights, also the clamp position for the servo to operate the Kettle lid.

http://i569.photobucket.com/albums/s...ps881c70f0.jpg


You are now looking inside the kettle. This doesn't look much but this hinge took a long time to get right,
sometimes the simple things are the hardest to get right.

http://i569.photobucket.com/albums/s...ps409353d1.jpg

The link in position, cutting the hole for the link was not without problems but now it's done, so I'm happy.
also I have used the old base, as the cradle.

http://i569.photobucket.com/albums/s...ps5def6792.jpg

I still have a few things to do, but to date I have really enjoyed making this little robot
and would recommend anyone having a go.

oh you have to charge the robot though the base! that would be epic!

Hahaha, that's an awesome idea.

Seems like a good idea I will look into it after I have sorted out the other bits.

I know its only a show robot but because of something I came across with that TX/RX set, does that kettle failsafe ?

Yes it dose, I can see the Rx LED turn off with the Tx, and the signal light on the speed controller responds accordingly.

Been doing a little more on 100DegC (Kettle bot) I am nearly finished on the lid lifting mechanism, sounds easy but to make it work and be able to remove the top took some planning.
Pictures and/or video to follow. :mrgreen:

As promised a couple of pictures of the lid-lifting mechanism

The servo is clamped to the top mounting plate with a wire link to the Polycarbonate actuating arm.
The hinge on the top of the kettle fits into the rectangular hole made between the top plate and the arm.
As the servo moves the arm across it pushes the hinge forward and upwards opening the lid.

There must have been an easier way!!!


http://i569.photobucket.com/albums/s...ps6f44e2f4.jpg

I still have to do a couple of modifications to do to it, but it works reliably that is what matters.

http://i569.photobucket.com/albums/s...ps7bde4ea0.jpg

The lighting conditions are not good for video at the moment,
I will try to upload something tomorrow. :mrgreen:

The video as promised.

On an earlier test the kettle spun so fast when I operated the lid the kettle spun on to it's side!!

http://www.youtube.com/watch?v=GgkJMc2eXPI

http://www.youtube.com/watch?v=9mPtKgX370k

Excellent, needs a little steam generator now!

Hi Alan
I am looking for one, if anyone knows of one (probably for a model train) that would work on 12 volts, please let me know. :)

http://www.cornwallmodelboats.co.uk/aca ... onics.html

Hi Alan i was looking at this one

http://www.ebay.co.uk/itm/MMB-FOGGY-...item3f21176556

The advantage is it only uses water I imagine it uses some sort of ultrasonic transducer with a pressurizing fan for flow.

But it won't fit into the Kettle. :(

The oil based ones work well but smell a bit!! plus you need plenty of oil. :shock:
But I may go that way instead because of lack of room.

I know Tomy made a Remote Thomas that could produce safe steam from water.

http://www.ebay.co.uk/itm/170972644151

Not a very good picture but you can see the GWS PG-03 GYRO, fitted to the robot this has helped in the straight line control.

http://i569.photobucket.com/albums/s...psbc6ee737.jpg

I am still looking for a smoke thing but could not bring myself to bid against some mother for the Thomas tank engine on Ebay.

There are a few small things I need to do to finish off the project but nearly there now.

Hi I'm still doing a little on Cherub,
I have been trying to find a motor gearbox for the lifter, I think I have found something cheap that will do. It is off a chair lift mechanism I think.
24V DC motor with a worm drive gearbox output speed about 40rpm 25mm shaft,

http://i569.photobucket.com/albums/s...ps34ebf274.jpg

The robot is quite small so getting it in place means moving the speed controller again!

http://i569.photobucket.com/albums/s...ps554af47b.jpg

As you can see the gearbox will come above the top of the robot so I will have to modify it to get the lid on.
In the background a few 36v packs to power it!

http://i569.photobucket.com/albums/s...ps6488b001.jpg

a beastly motor, liking your style

Looking for something similar myself but a bit smaller due to a small robot

After many years of faithful service from the SLA batteries, I have decided to try some Nicads I have 4 complete sets of dry cells in the garage and still haven't used any of them in a heavy.
This means a complete re-wire which was due anyway.
I have managed to hurt my neck yesterday so I am not sure if I will finish the conversion by the weekend so I might have to revert to SLA for Portsmouth. :cry:


http://i569.photobucket.com/albums/s...ps93cd84e9.jpg

I am starting to make up bits for the new Saint.

This picture shows the motor gearbox assembly with the top and bottom brackets fitted I want to get the drives sorted out before I finish anything else.

Hope to Keep you informed on this project.

http://i569.photobucket.com/albums/s...ps3a18ca4d.jpg

Sweet looking build Craig.

Mikes done a very nice job of those gearboxes from the looks of things!

Thanks Leo, Grant you are so right I am hoping they will work well in the new Saint the final ratio will be about 40:1 this will give a torque at the hub of 1,084Nm or 110.6Kgf/m discounting transmission losses.
With motors total power of 7.6Hp I'm hoping to swing the 14Lbs sledge hammer head quite fast. :mrgreen:

Looking forward to doing some work on the robots this weekend

I have the new motors for Kettlebot,
and I hope to fit the lift motor into Cherub,
the Saint Speed controller is away being fixed and I hope to get Seraph going again after the fire!
If I have the time. :shock:
Pictures to follow :D