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Thanks for the reply. I would agree the support for Pokeys leaves something to be desired! As for steps per unit the calibration is correct. I can type a command in MDI and the move is exactly as...

I have built a cnc from an old D&M trainer. I am using a pokeys57cnc board with Mach3. I have created a manual control panel and an automatic tool changer and everything works as it should. This has...

Jim,

The blue resistor is brown, violet, gray, black and measures 178 ohm.

Jim,

Read the bottom of the post as I spoke too soon and am not quite there yet!

The speed variation is done with a PWM signal to an ADC on the Pokeys board pin 17. It is converted to a 0 - 10 v signal that is sent to the motor control board in place of a linear pot. The program...

Wow, it's funny you said that. I tried adding a 22nf and then 100 nf and the top of the rising edge just started to round over. Before I added the caps all you could see on the trace was the top and...

Ok. I did a little rearranging and set up a new sensor. I placed the load resistor on the positive side and then re ran my tests. attached is a scope trace of the new arrangement and a diagram of the...

Well Pokeys is turning into a nightmare. I had lost communication and it has taken me this long to get it back! I am still having trouble with the index pulse but am continuing to work on that. As...

I did this yesterday before your post and I will do the rest today. Here are a couple of scope shots I captured with my camera. I took the cny 70 sensor with nothing but a 180 ohm resistor on the...

I did as instructed. I used my good bench meter and set it to the 300 ma scale. Using a 50 ohm resistor I got 0.00! The board says it can take a max of 5v signal. should i try it without the resistor?

Hi Jim,

Well I finally got back to where I was before. I had to reinstall my OS and start over. After several tries I am now connected again! The guy who fixed my spindle board suggested I use a...

Jim,

It looks like I have sucked you in deep(LOL)! I am ready to take a hammer to the board and ship it back to Pokeys direct if I new where they were. I can not test anything as i have lost all...

I am not sure I know what that means at this point? I just tried leaving the whole setup is with the circuit complete including the 7414. Remember the only difference in the circuit is the 10k ohm...

In your configuration you need to make a few changes. Under ports and pins, motor outputs you need to uncheck active low for the spindle and put 17 in for the step pin. On output signals you have pin...

Volts in is measuring the supply voltage from the pokeys board. As you can see as soon as I connect it to the basic circuit #1 the voltage drops. volts out is measured at the emitter to 0v. #2 is...

The Pokeys board accepts 5 - 24 volts and I am powering it with a 24v switching PSU. The only other thing on that PSU is the nema 17 motor that turns the tool turret. The Pokeys board has IDC...

I am sure this is equally frustrating for you at this point as you have to trust I am setting things up correctly! I did not address the comment you made earlier about the load resistor on the...

Jim,

I came in early to breadboard the circuit as Carsten drew it. I decided to power it with The pokeys board and then check it with the scope both connected and disconnected. I

I had powered...

Well I am fried! I just don't understand what I am doing wrong. Pokeys plugin only gives the option of Index pulse input! I stayed late after I received your post and bread boarded the 7414 again. I...

No! I could not get the 7414 to output anything but a steady 1.25v. I don't think I was using the proper resistor capacitor combination? The trace is with the two resistors for the cyn70 and a .1uf...

Well I tried everything and nothing seems to work. As for the 7414 I have had no luck even getting a Hi or lo signal? I bread boarded it and added the load resistor and the 15pf cap and it tis the...

Hello all,

I was wondering if anyone is using a Pokeys57cnc board and could answer some questions. I am retrofitting an new to me milling machine and am trying to create a front panel control...

Hello Al,

I got the spindle board back on Friday and it turns out it was the small control fuse that was soldered to the board. I thought i had checked it but I guess I should have removed it...

Hello Jim,

Well I got the spindle board back and it is working. There was a small fuse soldered to the board for control circuitry. I thought I had checked it but I guess I should have de-soldered...

Jim,

Thanks again! I actually understood that. BTW I looked at the sn7414 with interest while I was struggling through. Do you no of a through hole configuration of this chip? I guess I could...

Hi Jim,

Thank you for the reply and the explanation. I had originally tried 10k ohm on the sensor and was only able to get the signal to .9v low? I decided to bread board the circuit again and...

Al,

Thanks for the reply and yes I was referring to R72. I have used a gentlemen in the past for circuit board repair at work. Geoff from Scope Systems in MD. He was explaining to me the reason...

Hi Al,

No I just attached the multi meter to the dc output for the motor on the board. The motor works fine but I removed it from the board just to be sure. I think the ceramic current limiting...

No optical isolation involved. I disconected the dc motor and the adjustment pot. I jumped the board supplied 10v to the pot reference pin and I received the same results. Seems it is on the board. I...

Hello,

Dose anyone out there have a Cheetah 2 spindle control board? While retro fitting a D&M / Lab-Volt mill all was working well and suddenly the spindle con troll stopped working? I have 120v...