Z-axis, opto sensor, need help pls

[AnSu3d]

hello

I assambled the Felix2.0 last week.
2 opto sensors were not running. (no light on the Felix board 2.1)
I changed the sensors. Now all 3 lights on the Felix board are on. When i trigger the sensors the light is going off. I think thats ok.
On X and Y axis everythink is ok. When hit the opto sensors it stop.
On Z-axis he rans through the sensor. The light on the Felix board is going off but nothing happend. It wont stop.
I also noticed:
The axis running in wrong direction. I klick in repetierhost Z-axis up and it goes down. I klick down and it goes up.
The fan-duct is not running. I have 0.0V. The one on the hotend is running.
All wireing is ok. I checked this again and again and again.
So i am stuck here. No more ideas.
Sorry about my poor english. Its a long time ago that i wrote in english.
Thanks

[satoer]

Hi did you've read the other topic about opto-sensor failures? I've been reading quite a couple of opto sensor failure's and solutions lately.

[AnSu3d]

hello

Thanks satoer.
Yes i've read all the stuff about opto-sensor and 5 Volts stable.That doesn't help, because my sensors are working on 1.25 Volts.
At all sensors is 1.40V(gnd-vcc). Thats seems ok. BUT yesterday i played around and noticed that 2 of the sensors when triggerd, switch on ca 2.1V - 3.2V (gnd-sig) But the third came with 1.5V. In my desperation i change the third sensor with this one https://secure.reichelt.de/Optokoppler/ ... tnr=CNY+37.
This is the same as before on the opto-board. That's it! Yes!! All optos working now!
So all 3 opto sensors that came with the DIY-kit where broken.

ok next one:
All the axis still go in the wrong direction. I think i swap the blue and green wire on the Felix board?
I have 0.0 Volts an the head-fan. Here i think i take the alternative port.
Any other ideas?

[satoer]

Did you paint the vanes non-transparent?

The ATMEGA controller needs a digital I/O of a maximum of 1,5V for a digital 0 and a minimum of 2,5V for a digital 1 (with 5V vcc on the micro controller). I don't understand how it works with just 1.4V on the opto sensors vcc.
And I don't understand how you conclude all sensors are broken (which seems highly unlikely), while in you're first post you mentioned:

On X and Y axis everythink is ok. When hit the opto sensors it stop.

But if it works, it works


The axis doesn't go in the wrong direction. You have imagine everything in the perspective of the extruder. This software isn't written specifically for the Felix. And some printers have a fixed build plate and only the extruder moves X, Y and Z.

You can use a 5V or even better, 12V lead directly from one of the the power supply leads to power the head-fan. This fan always needs to be on.

[AnSu3d]

thanks satoer for reply

Did you paint the vanes non-transparent?

Yes I painted all black

The ATMEGA controller needs a digital I/O of a maximum of 1,5V for a digital 0 and a minimum of 2,5V for a digital 1 (with 5V vcc on the micro controller). I don't understand how it works with just 1.4V on the opto sensors vcc.

I wonder too but I will not touch it again It works

And I don't understand how you conclude all sensors are broken (which seems highly unlikely), while in you're first post you mentioned:

On X and Y axis everythink is ok. When hit the opto sensors it stop.

..after i changed the sensors X and Y

I try to explane:
after wireing the opto-sensors the first time, the led on the Felixboard shows:
Y is allways off, X is allways on, only the one on Z seems obviously behaved properly. I did a lot of tests.
So i think Y and X are broken. I changed the sensors on X and Y and than they worked. I thought Z was ok, so i leave the opto alone.
Then I found the Z shows all right (light on Felix board on/off) but he does not turn. I was still assuming Z is ok. That made me mad. Because I knew nothing else I have Z also exchanged. Now it works.
I also think that it is unlikely that all 3 optos are broken.But it looks like.

The axis doesn't go in the wrong direction. You have imagine everything in the perspective of the extruder. This software isn't written specifically for the Felix. And some printers have a fixed build plate and only the extruder moves X, Y and Z

ahh thats makes sense. I've never read this. Thanks

You can use a 5V or even better, 12V lead directly from one of the the power supply leads to power the head-fan

Yepp i think so too
Thanks again