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Well, I have similar problem. I can add control for start, stop and feed hold using OEM trigers. But, if I use stop-start sequence I must turn on spindle manual. Feed Hold is ideal, since doesn't...

Problem is solved (I hope :) )

Some people on some forums says the Intel can be problematic. But I think, since one motor works fine it is not true for me. I have tried DriverTest.exe and got lot...

Motor is 110V nominal, but I am using 88V, since higher voltage leads to high oscillations.



What exactly you think? I suppose in that case, Error LED will light always??

I have tried to decrease speed, but result is same.



I changed belt tension, but nothing....



Environment is absolutely same, nothing added, nothing removed. All cables are shielded at...

I have repair old machine and added UHU controller. Both axis are driven by tooth belt. During summer days it works fine, but now I have problem with longer axe. There is lot of overruns (about 120...

Check MOSFETs. I have similar problem and one MOSFET was wrong.

I am using IRF450. Since I have plans to work with higher voltage (~90 V) I think is better to start using HP_UHU. Is there any usefull PCB? I have found UHU rev1.0b.rar and...

I have installed zener diode with same polarity direction and it works.

I have tested old UHU with various motors and several times I blown mosfet drivers. First I tried with 12V zener diode, but without succes. Later, I have used P6KE15A, but controller doesn't work !!...

Problem solved. Changed optocoupler and now everything works fine.

There is no additional BoB. Only optocoupler on main (UHU PCB CNCECKE from http://www.gertronik.de/cncecke/servo.zip)
What is suggestion for breakboard?


No I am using desktop, but I can try...

Hi,
I have the old layout (20/10/2005) and problem with position error. I am using encoder with 500 lines. There is no O-count, but motor always go left. More precisely, if I have started from 0 and...

I have tested PCB with only +5V and GND and communication with PC works (of course, whole controller not, since there is no +12V). I must added -12V because I can't find any connector for it on...

Well, I have used DIY STK200 (parallel program. with 74HC...).
Why 20Mhz, since there is 16MHz on smc schematic?

hello, can I programm attiny "standalone", using 4Mhz Xtal, two caps, power supplz, with same fuses, and later put them in a socket on the board?

I am not expert, but I think software is written for LMDs not for L298. At least, L298 doesn' support microstep.

Thanks, but now I have problem with MPLAB. There is to many errors when I trying to compile. Is it assembler code correct?

Yes, I just tried with "Non Auto Timeout" and it didn't work. I.e. works, but has only one mode - 1/16 and jumpers has no effects.
ASM codes are the same for both SW, except line 23 #define...

Did you try manualu, step-by-step? If using GCODE speed can be to fast to see difference, but with jog difference is so obviously.

Is it possible to set timeout to smaller value than ~5 min?
I know it can be done by software, using pin 14, but I would like to do it by FW.