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the breakout board can only control 6 stepper drivers
if you don't want to use the 3 relays or need the analogue control output to control the spindle speed

to control the 3 relays and...

any silicone sealent you use needs to be an electrical grade that's acetic acid free

the usual sealents sold for household use for sealing windows or door frames etc release too much acetic...

Hi millhouse_

is this how you connected the diode

with the cathode connecting to the sensor output ?

432466


John

Hi millhouse_

this is what you should have

432452

if you have the jumpers fitted on the BOB

Vss is connected to the printer port GND & - 5V
Vdd is connected to the +5V supply

Hi millhouse_

How many NPN N/C sensors are you trying to connect to one BOB input ?

what's the part number of the sensor ?



A while ago I reverse engineered the BOB from photos found on...

with a breakout board like this that has a USB connection for a 5V supply connection - not data !!!!
431836

you either need a PC with 2 parallel printer ports
or a motion controller like a...

yes the cold could effect the sensors

what is the sensors part number ?

If its from Honeywell or Allegro Micro Electronics you may be able to get a detailed data sheet
to know how changes...

" what do I need for a manual pulse generator to work with this setup ? "

If your talking about a MPG like this

431736

which contains a rotory quadrature encoder
and switches to select...

I don't have a Haas so I don't have a schematic or any details of the electronics used

but notice the 2 days it failed the outside temperature was below 20 F

32F or 0C is freezing !!

...

have you connected one axis to the BOB or all three?


the 6th photo in post 3 shows a 3 pin connector on your stepper driver

so you just step direction and common - not sure if its 0V or...

Yes
That BOB will be easier with the screw terminals to connect to
431332

I would still use the larger 1XHCEL Board relay to keep the mains away from the BOB !!!!

431334

PS

Going by a photo of the mk3 USB controller
I expect its based on a CPU like the Atmel AVR or ARM Cortex used in versions of the Arduino

with no circuit to buffer protecting the TTL compatable...

What breakout board or motion control do you want to connect the 5v proximity sensors to ?

why do you think you need a optocoupler ?


John

if your not using the 4th axis

this is one possible way of using the "clock" signal from the printer port pin 2 assuming the BOB schematic is correct

431266




looking at the schematic...

I have found this data sheet for the relay board

431258

and a schematic for the BOB that needs checking

431260


I have a couple of questions

After looking through your photos

If the HN25-150-24 powers your stepper drivers , I would use the 24V version of the relay board so the stepper driver power supply can power the relay coil
...

this is the first relay I found that may enable your BOB to switch the mains supply to your spindle

431224
...

going by the limited view in your photos

its going to take more details to reverse engineer your control box


the control in the video is easy in conparison as it has the spare relay on the...

Hi Michael82

For some reason you have private messages disabled


Can you post detailed photos of the inside of the control box ?

When I'll know what spindle speed control and breakout...

that's good to know the G540 is working

do you have a multimeter ?


Assuming you have

with the Proximity Sensors re connected

if you measure between the G540 terminal 12 and 1 you...

I'm not set up for Face Time

I connect to the web using a desctop PC with no camera or microphone
I use a dumb mobile phone calls and texts only

I'm also a facebook and twitter free

...

Hi robwiacek

how did you know how to wire the unipolar motors to the bipolar stepper motor drivers ?

did you have a data sheet for the motor to know which 3 wires goes to each coil ?


...

Just looking at your photo of the BOB I can not read all the labels but

I can make out you have the 12 outputs ( pins 1 to 9 + pin 14 + pins 16 & 17 )

the question is how many axis do...

yes thats correct

its the easiest way to narrow down the problem

to see if its the G540
or
the Proximity Sensors and / or wiring to the 12V power supply


As the sensor is described...

As an initial test just to prove the G540 inputs are working correctly
this shows the wire links to replace your LJC18A3-B-Z/AX NPN Proximity Sensors

430882

If the G540 now works as...