A look at my pneumatic 150g Battlebot
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- Опубліковано 20 гру 2022
- Quick overveiw of my 150g antweight robot 'Johnny Mnematic'
It is a heavily modified lego ram with a RC aircraft fill valve and a VM1000 valve operated by a micro HV servo. The drive is two N20's from BBB with the esc being a Malenki Nano rx/ESC combo unit. It runs off a custom built 160mah 2s lipo (old turnigy nanotech cells)
The wheels are custom printed with foam tires and gears built in which allow it to be 6wd. The air tank is a c02/nos cartridge I found outside a pub. The chassis is 3d printed ABS and the armour is a mixture of 0.75mm and 1mm polycarbonate.
This video is not intended to be a "how to" guide as I don't want to encourage people too much down this route. I go back to the flamethrowers on robots mindset, if you have to ask how, then you shouldn't be doing it. I will be as helpful as possible answering questions but a lot of the setup should come from research and safe testing. I stand by pneumatics being as if not more dangerous than spinning weapons. Be smart, even when you're being dumb.
Feel free to check out my other builds (and more pictures of this one) on my FB page
/ 100057175851376
Very nice and clean work. I love the creativity
This is absolutely incredible- the engineering of the frame in order to fit all the components is brilliant
Thank you for taking the time to explain your designs, I particular enjoy your colourful descriptions of things.
Incredible work as always!
That is absolutely fantastic!!! Thank you so much for sharing!!!
That is such a nice clean build!! 🎉🎉🎉
Dang that's one hell of an antweight, good job!
That looks so nice, I really hope it's effective, but with 6 wheel drive it should be controllable. I'd really like to see another effetive 150g pnematic, I've seen a couple but only (the famous) Anticide ever made a competitive package.
Thanks Mark, it wouldn't be possible without your ESCs that's for sure! I haven't yet brought myself to enter it into full combat as it could easily be one and done if it gets a good knock.
I have been working on a revised version using some micro solonoid valves but they really need 12v and are still a bit lacklustre. One of the things I have in the back of my mind if you do have a commercially viable HV malenki!
Wow Dude coolest robot I have ever seen.
Love this, colour is 👌
Good job! Hard to get pneumatics in something that light!
Nice work!
Thank you for sharing!
Nice job!
Yo Harry!
Been some time, it's kickboxer!
Happy to see you still making robots!
Hey man! Good to hear from you. Hope you're well
@@HarryMakesThings And yourself mate, and yourself :)
Very nice design on the frame, surprising how big the firing valve is.
Thanks! Yes the valve is large, there are smaller options but they were over triple the price or had rubbish flow rate. Always a bit of compromise.
Wow, I didn't think it was possible to put a pneumatic system into an antweight system :D
Very possible - just quite a lot of balancing and compromise. In fact one of the most successful 150g robots ever (Anticide) is a much more impressive example from over a decade ago.
Its so cute, *now add googly eyes*
This isn’t Blip.
Thanks for making this video. This will be a major help for my own plans.
Also, what valve are you running on this?
SMC VM1000
Finally I’ll have a use for all my empty whippets
Love this design! Im in the US and would love to do something like this in 1lb. How big is the air tank you have? How much weight do you think it would flip? And how many flips do you get in each tank?
Finding the parts must have been a challenge. Very comprehensive. Congratulations on such a fine bot! Could I please ask, how much did you spend on parts? Also, are 3D printed tanks and rams a no go? Also, why don't the tubes slip off the valve nozzles?
I think there is maybe 30-50 in standalone pneumatic parts on top of the normal robot bits like battery esc motors etc.
Tanks I would say are going to be a big no as I don't think you're going to get them to withstand the pressure without being incredibly well designed, printed and prepped. As a pressure vessel they are going to have to uniformly contain the compressed air - a slight deviation in layer lines (so, every 0.1-0.2mm) you have the potential for a fault. Very easy to turn it into an unintentional pipe bomb.
I have experimented with printed rams, again it's more effort and for me, less reward than modifying a Lego or off the shelf part. That is possible with great care.
The valves (and all connections) have barbed fittings so they lock the pipes on. Of course they can still fail. The main one on the ram had a zip tie added around them.
@@HarryMakesThings Incredibly impressed you managed to get that into the weight limit.
Thanks for the video great info. My bigest question is where did you get / make your wheels from?
Cheers! They are 3d printed from abs with the tyres being strips of foam rubber glued around the OD
If you invert the ram you'll get a better amount of throw as its less weight to lift
Yes, very true - I made the decision to have it this way as the angle of the inlet barb meant I would have had to have the arm very steep with the ram mounted vertically. It is a bit of a compromise
Can you plz guide me on building such a piston that can lift 15kg approx
What sort of bolts did you use for dead-shafts? I have terrible knowledge of what fasteners and hardware is available at that scale.
These are just M3 bolts. I like button heads a lot and using them here meant I could use the same size Allen key for the whole robot. The wheels themselves had 3*6mm bearings in them.
it looks like one of those "sumo bots"
How did you reuse the Whippet tank and get air into it? How much PSI can the whippet hold? I bought a pneumatic system kit from Robart, but the mini tank i got is still pretty big.
I mounted a one way filling valve from an rc plane retract system to the tank and I can then fill it up with a hand pump or the tyre inflator I use on my car. UK ants are limited to 100psi so that's what I use. I imagine they can hold much, much greater pressure though if you consider what they're actually designed for.
What did you use the nitrous oxide for prior to using it's canister on this robot?
People use them to get high I think. I live next to a pub so the back alley is always full of them. Infinite spares.
How do you change the airtank?
I don't. I use either a bicycle pump (which is a lot of effort) or a 12v tyre inflator to bring it up to pressure. This just runs on compressed air, maximum 100psi as per the AWS rules.
I am currently looking for a similar air inlet valve as you used in this build. Could you specify a bit more accurate how its called?
The valve i used is a SMC VM1000 which you can find on RS components - part number 289-8720
Thanks for the fast response :).. Seems my question was asked wrong, I actually meant the one-way fill valve @@HarryMakesThings
@@TM-lf6cp that's my bad, normally people want to know that one. The fill valve i used has been out of production for a while sadly. It's for model aircraft air retract systems so that might get you close with some googling. Robart make one but it's like 50 quid so way too rich for my blood. These have been in my basket for a while as a replacement but I haven't bought one to know if it's any good for our purposes yet. Hopefully the link works on UA-cam : Just found this amazing item on AliExpress. Check it out! ￡9.98 | Fill valve for air retract gear system turbine jet warbird parts
a.aliexpress.com/_EwXlBMV
Thank you very much for your answer. Sadly the link did not work. But I used a festo one way valve for now. Might be possible to change to your kind of valve. I have to look into it@@HarryMakesThings