I follow the build manual and start “using the printer” on chapter 2 connecting the printer. I was stopped because I can adjust my trimmers. On 4 motors, I can only adjust one (ymotor).
How can I reach the 0.425 V as suggested in documentation? I have different values as followed:
[ul]emotor (.842),
zmotor (.818),
ymotor (.819) -> 0.419V
xmotor (.899). [/ul]
On the 4 motors, only the ymotor changes voltage values. It’s very difficult to adjust to 0.425V, I can only set it to around 0.419. Could it be the wiring on the others?
Although I did use the ceramic screwdriver, I am following the instruction with extreme care to avoid bad contact by getting extra help. I turn clockwise and counter clockwise, even more than 2 full circle but the voltage doesn’t change on 3 of them. I don’t want to go fuirther because I am afraid to damage them.
Do you have any suggestion?
Thanks.
KUDOS to the velleman support and particularly to Rebecca.
She helps me figure out the problem. The pots on the trimmer is very small and I simply need a very small and thin screwdriver for it. On the OSI, it’s the HW layer. Worse, it’s the user cry wolf layer, very difficult to handle. Both are the hardest layer to troubleshoot.
Make sure the screw driver is small enough to fit in the pots.
You can use a metal screw driver just take care not to short anything.
You may need someone to hold the negative lead on the screw connector of the blue screw terminal.
You should set them to 0.55 as this works best.
I read the whole post of wrong way about .55V. You’re gonna see it after I file and thin my screwdriver. I can assure you that although I wear class, I have decent sight. In this case, I even use a magnifier but the concavity of the lens on the helping hand doesn’t match the convexity of my reading glass lenses.
I was able to adjust Y, Z and E motor trimmers.
But for the X motor the voltage is always much too high (as if there is a shortcut).
What could be the cause ?
Is my wiring somewhere wrong ? - and does it mean I need to recheck all soldering ?
Or would it be rather the circuit board ?
It’s hard to tell.
It sounds as if your screw driver is not fitting in to the slots of the pot.
I don’t know if it would make any difference but you could try swapping the X and Y driver cards and and retry.
When I swap them, the Y driver card with X motor is OK - the X driver card (with Y motor) shows too high voltage (4.5 V)
So it looks like a problem with the X driver card.
Wrt your remark that my screwdriver may not be fitting : I see the pot turning but the voltage never drops.