On Tuesday 22 October 2019 19:31:59 Thaddeus Waldner wrote: > I think the cheap 298 devices on eBay would work for you. They are > 2-channel h-bridge. They actually have 6 inputs; forward, reverse, and > enable for each channel. They will turn a motor from a single PWM > signal, either via the enable input with one direction pin high, one > low, or via a direction input with enable high and opposite direction > low.
That may be so, but indicates a smarter version of the L298 than I tried to use 20 some years ago, generating a pwm in a pc to drive it with then, and the thing I most remember is burning my fingers on the heat sink at 12 volts applied dc. The motor didn't fair much better, no current regulation resistor change made any diff. Fooled with it for about a week, made up my mind it would never find a home in any of my stuff. 3 of them acted exactly the same. And it hasn't. They went out with the trash. A year or so later I had bought the hf micro mill, and while looking for motor drivers found the 2M542, bought 5 of them so I'd have a spare. So far I have bought 9 of them, and nearly 20 years later, they are all working like new right now. Zero failures=no regrets. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
