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I'm looking at you, @Mike-Hankey...
Did you already print it? You know, this one here[^].
Well I have and have it sitting on the desk right now. I did not print the tracks yet, but that's because it's still in the last place of my pipeline and I want to get some black filament for the tracks. I used up most of my turd colored filament for the robot and it's going to be airbrushed anyway, but I don't want to have turd tracks.
Anyway, do you know any brushless motor controllers for the Raspberry Pi? All I found was for brushed motors, which I would prefer not to use. I do have two brushless helicopters motors in my parts box, but with around 1 kW they both probably are a little too powerful for bthe little robot and I better get two smaller brushless motors. And I also would like to use other stuff from my parts box, like microservos ore LiPo batteries.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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That's not the robot you want to build!
You want This robot![^]
Sent from my Amstrad PC 1640
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Toys. If you want to get destructive, try this one: General Motors MAD-3R Marauder.[^]
Hmm, I could print one...[^]
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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That's not "real" unfortunately. It's just what I need to pop down to the shops...
Sent from my Amstrad PC 1640
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Battletech is quite old. It screams '1970s' everywhere. The targeting computers in those machines come in whole tons and hit less than the average stormtrooper. That must be that way, so it's all about the pilots and not about the machines. As the story wants it, they have been bombing each other into the stone age for centuries and almost have no factories left that still can produce their giant robots. They also have lost the knowledge of how much of the technology actually works.
OriginalGriff wrote: That's not "real" unfortunately.
Not really unfortunate, don't you think?
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Depends who has them. If it's me and no-one else, then it's unfortunate for them, but lucky for me! 
Sent from my Amstrad PC 1640
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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OriginalGriff wrote: Depends who has them.
Hmm, there are guys who call themselves 'the Clans', who had taken a few centuries off and now think it's time to return. Not only did they not lose the technology. They improved it and even invented better stuff. And their toys are in the hands of genetically engineered warriors who have a healthy disgust for a 'freebirth' like you.
No, you really don't want that. 
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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I've had my eye on it but waiting on black filament...any day now.
CodeWraith wrote: but I don't want to have turd tracks.
Yeah I hate turd tracks...
Never worked with brushless motors so have no idea about controllers. For brushed I make my own using the LM298 chip, can handle 2A.
Let me know how it turns out, I want to make one too. I've got some geared motors in the parts box that I've been looking to put somewhere. (I know what you'r going to say...don't go there)
Everyone has a photographic memory; some just don't have film. Steven Wright
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Mike Hankey wrote: I hate turd tracks
Then never get a Roomba and a Dog[^] 
Sent from my Amstrad PC 1640
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I'd hate to be the one that had to clean up. Sh*tty job!
It's your dog...no it's your dog. And that's how the fight started!
Everyone has a photographic memory; some just don't have film. Steven Wright
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And that's exactly why I prefer cats. They don't poop on the floor and get along with Roombas[^].
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Printing was no problem at all. It has only few parts, which you have to print 2 - 4 times. They fit well together. It has no room to install bearings for the moving parts. Too bad, because model helicopters are mostly made of bearings and I have enough in my parts box. Also, I'm going to modify the side pieces that hold the cogs and the tracks. Instead of gluing them, I will drill some holes and install them with a few strong screws. This way I can always take it apart and repair it.
Fir the motors I have now found this[^]. A 30 amp ESC is way too strong for the robot. It could easily be used with the stronger helicopter motors. 10 amps would be plenty and the ESCs are much less expensive (as are the motors). I will look for both in the parts for quadcopters.
When I come home I can post a picture. But be advised: It's has not been painted yet and is still completely in turd.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Brush-less motors I have only used on one occasion and found they ran much hotter than brushed. So I'm guessing the current draw at start is higher (they were used on pulsed loads?) I have always used LM298's and never had an issue
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glennPattonWork wrote: ran much hotter than brushed
Really? The ones I use[^] don't run hot at all. Right after landing they can be touched and feel only slightly warm. Under the helicopter's canopy there is not really a strong stream of air to cool it. Just look at these values:
Quote: Input voltage: 22,2V (6S)
Max continuous current: 115A/195A (5sec)
Max output power: 2550W/4330W (5sec)
KV value: 960KV
Stator Dimension: 4230
Stator Arms: 12
Magnet Poles: 8
Dimension: 6x52x89.1mm
Weight: 380g
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Well this to drive spindle in a test rig with not much air flow in a sealed chamber. So not really a fair test...
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Sure, but I don't really see a reason why they should be hotter than regular brushed motors. They also just have coils and magnets. The big difference is that they have no brushes that can wear out and therefore last longer.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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I've got an invitation (supposedly VIP) to come and meet 15-20 companies to see if I can have a new carrier with one of them...
Anyone has experience with HackerX?
"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge". Stephen Hawking, 1942- 2018
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I've had the invite as well but never went. I'm happy where I'm at.
Everyone is born right handed. Only the strongest overcome it.
Fight for left-handed rights and hand equality.
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By request of pkfox:
A home for some, but the instructions protrude! (4, 7)
Sent from my Amstrad PC 1640
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I'll bite the bullet on this one.
Code Project.
This space for rent
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Is the correct answer!
A nice easy one for a Monday (I've been saving it for a while) - you are up tomorrow.
Sent from my Amstrad PC 1640
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I figured I'd give you a break and we all know that pk has a patchy history of remembering to post 
This space for rent
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Oi 
We can’t stop here, this is bat country - Hunter S Thompson RIP
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You resemble that remark? 
This space for rent
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