Y-Motor pushes through Y-OptoSensor

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evanr
Posts: 101
Joined: Thu Nov 29, 2012 3:09 am

Y-Motor pushes through Y-OptoSensor

Post by evanr »

Hi Again!

For some reason the Y-Motor keeps trying to push through the Y-Opto-Sensor when 'homed'.
- there is black tape on the switching-vane
- the light on the Y-sensor goes off when the Axis is moved over it.

I had a problem like this a few days ago and found the heat sinks on the chips weren't centered.
- the heat sinks were touching the pins on either side
- after centering the heat sinks (again), the problem went away

I can't figure why this is happening again?

any ideas?
Evan

evanr
Posts: 101
Joined: Thu Nov 29, 2012 3:09 am

Post by evanr »

Update:

Yesterday everything worked.
Today Y-Motor pushes through the Y-Opto all day long.
Then, at night it finally stopped at the Y-opto.

Everthing seems to work great now..... haven't done my 1st test print yet, week 6.

I did nothing to stop it from working and nothing to get it working again, it is sporadic.

Could it be a lose wire somewhere, something touching, maybe it doesn't like me?

Any clue what could cause this sporadic nature?

satoer
Posts: 436
Joined: Mon Oct 01, 2012 8:00 pm
Location: Netherlands

Post by satoer »

Well probably a bad contact or wire. But I've seen weird firmware problems over here that can give homing problems. what firmware do you use?
My Felix 1.5 printed designs on Thingiverse
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evanr
Posts: 101
Joined: Thu Nov 29, 2012 3:09 am

Post by evanr »

All seems good today.
contacts and wires look good.
... wish I new what happened, maybe firmware as you say.

Firmware I use is Marlin RC3_Felix_1_0_RevE.zip as posted by Guillaume with Repetier v0.82b as per their site.
Is there a newer version of firmware?

satoer
Posts: 436
Joined: Mon Oct 01, 2012 8:00 pm
Location: Netherlands

Post by satoer »

Nope that's the latest.
My Felix 1.5 printed designs on Thingiverse
E3D V6 Hot end upgrade for your Felix
Tweezer bracket for your Felix
Led bar upgrade for your Felix

evanr
Posts: 101
Joined: Thu Nov 29, 2012 3:09 am

Post by evanr »

Quick Update:

No problems, so I did my first test print today.
It wasn't perfect but it was good.

... the printer seemed to have missed about 3-4 layers every few mm - otherwise the part looked like it was suppose to.

I tried to test print again a bit later but when 'homed' the Y-Motor again, sporadically/intermittently pushes through the Y-OptoSensor. I have to disconnect the USB.... it doesn't sound good.

Could the missed layers in the first test print be related to the Ymotor-Yopto problem?

satoer
Posts: 436
Joined: Mon Oct 01, 2012 8:00 pm
Location: Netherlands

Post by satoer »

Don't think so. Is there enough tention on the extruder bearing?

What happens when you block the y opto when pressing home before the blocking vane reached it?
My Felix 1.5 printed designs on Thingiverse
E3D V6 Hot end upgrade for your Felix
Tweezer bracket for your Felix
Led bar upgrade for your Felix

evanr
Posts: 101
Joined: Thu Nov 29, 2012 3:09 am

Post by evanr »

thanks for the tips!
But, it is working again.
Next time it happens I'll be sure to do some tests.

evanr
Posts: 101
Joined: Thu Nov 29, 2012 3:09 am

Post by evanr »

just as I thought all was good, the Ymotor continues to go through the Yoptosensor. So I did some tests:

Scenario:
- test Y-optosenor by placing flat folded paper between sensor before Y homing.
Sensor responds positively, light goes off
- After pressing Y-home, test sensor before switching vane gets to it.
Sensor responds positively, light goes off
- When Y-SwitchingVane reaches Y-opto, sensor light goes off, motor keeps going until I uplug USB (or I guess until it overloads and shuts down).

X-axis and Z-axis are ok.

I could switch the Ysensor with the X or Z to isolate the switch further, if necessary.

But, I guess this test means the Ysensor would be working?

evanr
Posts: 101
Joined: Thu Nov 29, 2012 3:09 am

Post by evanr »

All axis homed nicely.
I added a little more power to the X-axis.

Did my second test print.
Attached is a picture.

speed 25mm/min
extruder 200C
table 60C
switchable fan on after a few layers

The bottom half of the print turned out great, but the top half bowed in then out again. So, when the print was done, Yhome but the motor keeps pushing through the sensor.

Would this have anything to do with the bowing in this print or was it the fan?

thanks!
Attachments
TEST PRINT #2 - BOWING ON TOP HALF
TEST PRINT #2 - BOWING ON TOP HALF

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