On Wednesday 28 October 2020 16:42:30 Chris Albertson wrote: > Looks like you should buy a few MOSFETS and make an h-bridge. But > driving the lower side of the h-bridge from 5 volt logic level is not > super easy. > > Either that or just use a 12Volt motor > It took me 4 months to buy that 24 volt motor. People were advertising it on ebay who did not in fact have it for sale. The first guy that offered to sell it to me turned out to be the same jerk who sold me the 6040 mill with the junk electronics that I had to replace one of the motors and all of the electronics before I had a working mill. He drug me around for a month before finally getting the message that I wanted the motor fedexed overnite or canceled. He canceled and refunded my card.
The next guy, who claimed it was in the same warehouse in Chino CA, was still over 3 weeks getting it here by fedex. And now you want me to change it for a 12 volt motor? A 90 volt would make more sense as I've spare psu capacity and another of Jon's pwm-servo's to drive it with once its repaired. But either version seems to be made of the same unobtainium as hens teeth. So I've bought two copies if a 36 volt, 15 amp controller I can run using the same signals as the first 2 boards I would need to run in well deionized water for coolant. But I'd need a place for a well sealed 5 gallon tank and a water pump big enough to both cool the chips AND pump some of it thru a deionizer cartridge, another very expensive item. You learn about that around broadcast transmitters as stuff above 10 kw, is usually water cooled. And the water circulates between grounded plumbing and anode voltages rangeing up to 7200 volts. Pure water is an insulator. You keep that water in perfect insulating condition or replace expen$ive stuff every 6 months from corrosion. [...] 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
