TinyTwo Speed Controllers

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Rhys
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Joined: Tue Oct 29, 2002 12:00 am
Location: Caerphilly, South Wales

Re: TinyTwo Speed Controllers

Post by Rhys »

Well the plan is to have a spinner running off 3 cells, with a tiny servo to self right. So I could probably run the servo and receiver off the 5v reg on the speed controller for the weapon motor. Unless you can think of a more efficient way of doing it? It would probably make the drive ESC a bit simpler as there would be no need for a 5v reg at all.
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Rapidrory
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Joined: Sun Nov 24, 2013 9:54 pm

Re: TinyTwo Speed Controllers

Post by Rapidrory »

Nah, it has to have a voltage reg of some form on there to drive the PIC chip :L If it's only for self righting then the 5V Reg should be fine; I've used it with Lionel's 2Kg/cm servo before, and it can happily flip robots with that. If I can ensure that the 6V rail is stable enough with a servo, i'll just stick the 6V reg on there; I just don't want it to spike and fry your Rx :L
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
Rapidrory
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Joined: Sun Nov 24, 2013 9:54 pm

Re: TinyTwo Speed Controllers

Post by Rapidrory »

I now have 4 NanoTwo HPs, all of which have already been conscripted into service for Saturday!

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Having made a few tweaks and adjusted the firmware, they now run pretty stably off a 2 cell lipo; had one with a 180mAh 2 cell run both Tinny's motors at full speed for an hour before the driver chips finally locked out due to low voltage (was on 7.5v by that time). There was no load on the motors, so need to do more test, but I've driven Tinny around a bit with one in and it seemed fine.. just gotta keep the Lipo charged :L

Got a bit more work to do on the firmware, and more tests to run (I uploaded a broken copy of the firmware to the uni computers so couldn't do any testing until I got home today), but I'm hoping to have them going well by Saturday. :)
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
haz
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Re: TinyTwo Speed Controllers

Post by haz »

I'll buy one cash in hand at the aws if you're selling?
Rapidrory
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Joined: Sun Nov 24, 2013 9:54 pm

Re: TinyTwo Speed Controllers

Post by Rapidrory »

Sadly all four are now spoken for... I had planned to get a whole bunch ready in time for the AWS when I originally started this project, but I barely have 4 as it is :L

They're still largely untested, and the tests I have done show waay too much noise being coupled onto the servo data wires, causing it to think you're waving the sticks round madly under heavy load, which isn't ideal... Gotta try sort that and a few other things it in software and hardware before Saturday..

Next AWS may be a little more realistic, and I can probably ship them before that... they'd have some decent firmware too, not something that's about to take me all night to throw together :-?
Last edited by Rapidrory on Thu Mar 06, 2014 6:49 pm, edited 1 time in total.
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
haz
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Re: TinyTwo Speed Controllers

Post by haz »

Ok no worries. I'll talk to you on the day about some pre orders of the next batch maybes?
Rapidrory
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Re: TinyTwo Speed Controllers

Post by Rapidrory »

Yeah sure; as I've said I've got a few designs in mind, so it would be good to try and get an idea of the sort of specs people are after...
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
Rapidrory
Posts: 1160
Joined: Sun Nov 24, 2013 9:54 pm

Re: TinyTwo Speed Controllers

Post by Rapidrory »

@Duff, the one you're getting has also been conscripted into service for the AWS, so you may have to wait a bit while I extract it from one of my robots after the event :P

*EDIT* whoops, that was meant to be an edit not a double post! :-?
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
haz
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Re: TinyTwo Speed Controllers

Post by haz »

something that can handle the beetleweight sized motors and 4s might be good if you could. I'll give you a pair of motors at the aws if you want to see if you could do something.

antweight wise anything that can handle 3s and 2-4 hp motors would be nice
Rapidrory
Posts: 1160
Joined: Sun Nov 24, 2013 9:54 pm

Re: TinyTwo Speed Controllers

Post by Rapidrory »

I'll look into it :L What current rating are the beetle weight motors?

If anyone has any specs they'd like to see in a speed controller, feel free to suggest it.
Not saying i'd make one for every spec, but just want to try and get a better idea of what people are looking for so I can make something that suits the most people :)
Rory Mangles - Team Nuts

Robots: Nuts 2 and many more...

NanoTwo Motor Controllers: https://nutsandbots.co.uk/product/nanotwodualesc
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