[PD] electro-mechanical piano (player piano) - Arduino, Solenoid Issue
jeffreyconcepcion at gmail.com
Thu Jun 27 23:20:22 CEST 2013
Yeah, we're building custom drivers for the solenoids and we built a 30v
power supply as well.
On Thu, Jun 27, 2013 at 4:43 PM, Charles Goyard <cg at fsck.fr> wrote:
> Epic Jefferson wrote:
> > Alexandros and Roman:
> > Thanks, i'll check both of your suggestions. I'll let you know how it
> > I also just ordered a Practical Maker PWM shield for arduino UNO. 1
> > gives you 32 pwm pins and they're stackable, up to 6 without the need for
> > an external power supply.
> Beware that you'll need PNP transistor for the power stage, or you'll
> get small bumps when the TLCs go BLANK each cycle.
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