I've not seen CNC-Paul for a few weeks and - having finally got my audio project sorted out - I'd like to look at these crazy dc servo style motors with rotary encoders he's been banging on about ;-) Anyway, I'm assuming that to drive a dc motor in different directions, some kind of h-bridge is going to be in order; does anyone have any, or know how to use any h-bridge driver chips? I've had a couple off a few people over the years, so I'll bring them along (if I can find them). Ideally, by the end of the night, I'd like to get precise movement over a single dc motor with a rotary encoder on it (over usb). Like my audio stuff, it'll all be from first principles, so Arduino motor shields aren't going to be much use, I'm afraid. But if anyone could bring along some motor driver chip(s) so we can compare ideas, that'd be really great. Failing that, I could build a bridge from some fets/power transistors, but a driver chip would just make things easier!
chris.hol...@multiedge-net.co.uk> wrote:
> I've not seen CNC-Paul for a few weeks and - having finally got my audio
> project sorted out - I'd like to look at these crazy dc servo style motors
> with rotary encoders he's been banging on about ;-)
> Anyway, I'm assuming that to drive a dc motor in different directions,
> some kind of h-bridge is going to be in order; does anyone have any, or
> know how to use any h-bridge driver chips? I've had a couple off a few
> people over the years, so I'll bring them along (if I can find them).
> Ideally, by the end of the night, I'd like to get precise movement over a
> single dc motor with a rotary encoder on it (over usb).
> Like my audio stuff, it'll all be from first principles, so Arduino motor
> shields aren't going to be much use, I'm afraid.
> But if anyone could bring along some motor driver chip(s) so we can
> compare ideas, that'd be really great.
> Failing that, I could build a bridge from some fets/power transistors, but
> a driver chip would just make things easier!
> p.s. @CNC-Paul you are coming along tonight?
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> I'll be there tonight so let me know if I can help at all. It'd be great > to get cheaper drives for DC servos.
> Seb
> On Thu, Nov 1, 2012 at 2:27 PM, Chris Holden < > chris....@multiedge-net.co.uk <javascript:>> wrote:
>> I've not seen CNC-Paul for a few weeks and - having finally got my audio >> project sorted out - I'd like to look at these crazy dc servo style motors >> with rotary encoders he's been banging on about ;-) >> Anyway, I'm assuming that to drive a dc motor in different directions, >> some kind of h-bridge is going to be in order; does anyone have any, or >> know how to use any h-bridge driver chips? I've had a couple off a few >> people over the years, so I'll bring them along (if I can find them). >> Ideally, by the end of the night, I'd like to get precise movement over a >> single dc motor with a rotary encoder on it (over usb). >> Like my audio stuff, it'll all be from first principles, so Arduino motor >> shields aren't going to be much use, I'm afraid. >> But if anyone could bring along some motor driver chip(s) so we can >> compare ideas, that'd be really great. >> Failing that, I could build a bridge from some fets/power transistors, >> but a driver chip would just make things easier!
>> p.s. @CNC-Paul you are coming along tonight?
>> -- >> You received this message because you are subscribed to the Google Groups >> "BuildBrighton - the Brighton Hacker Space" group. >> To post to this group, send email to brightonh...@googlegroups.com<javascript:> >> . >> To unsubscribe from this group, send email to >> brightonhackerspace+unsubscribe@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msg/brightonhackerspace/-/coiHsBnGDDUJ. >> For more options, visit https://groups.google.com/groups/opt_out.
Sorry did not see your post till this morning, have been holiday past 2 weeks & Debs my Daughter is getting married today. Great to here your interest in these drives, when we get this cracked think this will help to build club many great CNC Machines at low price. will be there Thursday 8th & will bring all I can find to help. Paul
On Thursday, 1 November 2012 14:27:50 UTC, Chris Holden wrote:
> I've not seen CNC-Paul for a few weeks and - having finally got my audio > project sorted out - I'd like to look at these crazy dc servo style motors > with rotary encoders he's been banging on about ;-) > Anyway, I'm assuming that to drive a dc motor in different directions, > some kind of h-bridge is going to be in order; does anyone have any, or > know how to use any h-bridge driver chips? I've had a couple off a few > people over the years, so I'll bring them along (if I can find them). > Ideally, by the end of the night, I'd like to get precise movement over a > single dc motor with a rotary encoder on it (over usb). > Like my audio stuff, it'll all be from first principles, so Arduino motor > shields aren't going to be much use, I'm afraid. > But if anyone could bring along some motor driver chip(s) so we can > compare ideas, that'd be really great. > Failing that, I could build a bridge from some fets/power transistors, but > a driver chip would just make things easier!
