RE: [CAD_CAM_EDM_DRO] low cost stepper driver

Now that the 4.2Amp motors are readily available using 4.2Amp drivers is more of a requirement, so there is not such a clear advantage to the (over here) much more expencive Gecho ...

----- Original message -----

> > > Geckos will give better performance and be more reliable, but are
> > > also 3 times the price.
> > >
> > > Tony
> > But outlive 5 or 6 cheap drivers. Not susceptible to common killer
> problems.
>
>
> Yeah, horses for courses, cheap/fast/works and all that.
>
> The cheap drivers work if you take their specs with a large grain of
> salt. Here's one that at least labels the drive properly:
> http://www.lightobject.com/1-Axis-CNC-Laser-Machine-Stepping-Motor-Driver-TB
> 6560-P451.aspx
>
> The ones I have allow up to 3A, that one has 2.5A, either way I'd run
> them at 2A.  All the listing will have them at 3.5A, but that's peak
> (and doesn't say how long you can run them for at that amperage).
>
> That link give the voltage at 32v (35v max), again I'd stick to 24v.
> That same site recommends 24v for the TB5660 drivers as well, see
> http://www.lightobject.com/New-version-3-Axis-CNC-Laser-Machine-Stepping-Mot
> or-Controller-TB6560-Support-Mach3-KCam-P274.aspx
>
> 24v @ 2A is a long way from 36v @ 3.5A, it's reality vs marketing.
>
> I also have fan cooling on mine, I'm not sure if I actually need it. 
>
> Tony
>
>
>
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