[quote]I was considering buying one of these boards, guess I wont bother.[/quote]
I have had a look for the write up these boards got and cannot find the site but it was over twelve months ago?
I turns out that its the TB6560 chip is always running hot and the specs are not up to scratch for this board resulting in the chips popping at their max peak which is what this board does.
(I wish I had a smart name like that....) I suppose it's not clear from my write-up that, when the axis effort becomes too high, the whole motor assembly - the motor, the output shaft and gears + sprocket (and the fan) rotates around the big fat pivot and makes one of the two microswitches. Until the load becomes too high the thrust is taken by the compression springs. Because these are under compression at rest they do not move until the thrust is sufficient to compress them further.
So we use the torque generated by the motor to move itself. There happens to be a geartrain and so on too, but it still applies. It could be done by allowing the motor to pivot about its own axis, under similar spring-loaded restraint. That seemed too difficult at the time, and this method works.
Does that help?
Regards from Alan D.
Tonight was a big breakthrough, Success !! We found out that Mach 3 version 3.62 (available as a free download) will run the 5 stepper motors. Be careful to read all of the documentation supplied on the mini - CD and make sure you configure as directions indicate. Also be sure and download the 3.62 version from the web site ([U]software on the CD does not work[/U]).
Please, I have a question which is better from the point of design Be the first buffer circuit 47hc14 And followed by Opto-Couplers pc817 Or reverse the better
I want to know what this means (NEMA17;NEMA23;NEMA34)&fosc;fcik&600khz;15khz
[B][COLOR="Red"]Thank you all and sorry for questions because I am inexperienced[/COLOR][/B]
NEMA is a US based standard (National Electrical Manufactures Association).
This suggests standards for electrical equipment, when used in conjunction with motors, it usually refers to a frame mount size.
Not sure what context the freq ratings are? Unless they are concerning PWM freq?
Thank you very much for your interest, but what does the NEMA with stepper motor
[quote=memohope;1075930]Please, I have a question which is better from the point of design Be the first buffer circuit 47hc14 And followed by Opto-Couplers pc817
If your parallel port is weak, then this is better. But you MUST power the buffer with a separate power supply. If you take the power from the board, then the optocouplers will become useless. It will become the worst design possible.
You say that the optical isolators are better after OF isolation parallel port , but in the schematic design is the opposite and I do not know the pin of the 74HC14 (4 & 7) where they are connected
The ebay tg6560 is very poorly designed. Don't copy it.
I hope you to help me and previous questions I am talking about at the beginning of the design that you post you advise me not to implement it because it is mistakes
Thanks, and sorry for not understanding
I do not know I read the post I do not remember now which he said was
I have a chip TB6560 and I want the best design because I have a good design, but the worry is here, including design advise me and thank you