... Very impressive! I'll bear that in mind next time I feel moved to dunk my control hardware in a bucket of water... Did you check out how it handled being...
... Hi Mariss, great, I'd love to see a brushless drive with the quality and pricing of the G320. I've noticed that DC motors are getting rare and more ...
... Hi Vladimir and Mariss, I don't understand all of your scientific discussion and I don't want to add further theoretical argueing. But I'm one of those who...
... drives is a bit old-fashioned (DOS based) but the W2k version included in Mach2 is extremely user-friendly. I'd like to see something like this for the...
Art, Good evening! That was a real mess of a situation wasn't it? It made a lot of sense hardware-wise but was a pain in the rear for the firmware. No, that...
Hi Mariss, When it comes time to announce the G204V to the marketplace - maybe in some print ads, I think design engineers would respond favourably to a list...
... Excellent. My problem with the shifting was the time allotment for it. The rabbit, when programmed in assembler can do quite a bit, but I'd like to be able...
Hopefully someone will set me straight if I have any of this wrong, or is unreasonable, before the credit card comes out ;) This is for a Taiwanese knee mill...
... What's the problem, here? Is it some fundamental limitation to the Rabbit design, or is it a serious deficiency in the Rabbit compiler? Or, is it a ...
Hi all, I continue to use both Geckos and Rutex drives on different machines and have had excellent results with both. I found the PID learning curve to be...
Hi Jon: Your quite right, it could be done faster with pointer arithmetic, I was simply using boilerplate C code to do this, and with all the shifting and such...
... Hmmm, I get 1.8 * 25.0 = 45 V ... But, you have to take motor resistance into account, too. Let's see, 1500 Oz-In / 37.51 Oz-In/Amp = 40 A. Well, you can...
Jon, I agree with your analysis except for one thing. The motor has a maximum terminal voltage of 60VDC. I take that as a hard limit or a "not to be exceeded"...
... Jon, Thanks, you are right I did the math wrong. 45v if it's 25 v/krpm, and ~55v if it's on the other end of the tolerance. Still digesting the rest of it....
OK then, 2 last questions. Mariss, with the set up I'm considering, the Gecko would have to read 12500 cycles per second, or 50,000 pulses (in quadrature). Can...
OK, nevermind. Please don't even answer that last post. I just re-read my other thread on that subject. Sheesh! I don't know what my problem is sometimes. When...
David, Don't worry about it. It's a warm Saturday night, I don't know about you but we have a few good freinds over tonite having good conversation and some...
... Well, a decent servo motor should have a bit more commutator segments and coils than other motors. I can't believe the commutator of a 20 A servo motor...
Jon, I guess I'm just the law-abiding type. If the speed limit is 60 MPH, then I drive 60. :-) Why have a maximum specification if it's meant to be winked at? ...
I read the datasheet and I am a little bit confused. The biggest motor with lowest inductance ist only presentted as 120V 9A! bipolar mode. All others are...
This may be a realy stupid question: I am running 2 stepper motors on a single axis and was wondering if it is possible to connect both of them to a single...
... Hi David, don't worry about the pulse rate at the G320. I drive some of my geckos with >300kHz step rate and never saw a single lost step. ... Again, don't...
Hi all, I have a set of XYZ axis Gecko 320s and I am currently running a shoptask 3in1 and a 7x14 mini mill/lathe with this same driver system. Each machine...
...thinking through a little further, I thought it would be nice to have two sets of pots pretuned to each set of servos and then switchable to either for...
That question was asked a couple of days ago. The answer is NO. It is a bad idea. If you are using Mach2, I would suggest that you use two drivers in slave ...
... Probably the best way is to use 2 DPDT relays per Gecko drive. That way, you could keep the wires very short between the pots, relays and Geckos. (I'm...
John: I too have a Shoptask. Mine is the Eldorado Bridge Mill (2002 purchase). I am getting ready to CNC it. Any chance you could share the specifics on your ...
Thanks Jon, Your relay idea clanged a bell! I was also thinking how with Mach2 I could automatically switch the drive tuning with the selected profile. In...
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