Servo speed

[clocey]

The problem I am having is the Sharpie will flip up too far and be out of position to be able to draw. I am using a rubber band as a work around and it is working well.

[JJrobots JP]

You can modify the separation between the tip of the pen and the egg/ball via the SERVO UP/ SERVO DOWN parameters in the SETUP tab of the EGGBOT extension

[LanePanet]

hello... I ordered the gyro to support the balancing robot but have not installed it yet.
The unit draws GREAT but the pen servo moves the same speed regardless what I set on the timing page. I have also created a mini-painter that uses and UNO,an adafruit shield and longrunner motors that does not draw well but I do have good control of the servo.

turnkey pcb

[rhill051]

I'm looking for a solution to this problem as well. I've set the servo pen up and down speed to single digits and it still throws the pen back half the time. The robot draws flawlessly (after upgrading the pivoting arm to use the extra bearings) but having to sit here and babysit the pen to make sure it doesn't flip up and stay there really sucks lol. I'm guessing there is something with the hardware? but not sure. I'd be happy to provide any extra help to clear this up

[clocey]

I added a rubber band doubled over to keep the pen from flipping over

[maddin-la]

I have the same problem.
Is there any solution right now?
I am using the portable version with newest Arduino files.

[LOlsen]

Same here, servo moves at same speed regardles of settings. Using latest portable inkscape from your site (as of today)

[LOlsen]

(03-10-2020 07:31 PM)LOlsen Wrote:  Same here, servo moves at same speed regardles of settings. Using latest portable inkscape from your site (as of today)

I might add that the servo also acts reversed, so pen up position is about 35% and pen down is 55%, if this information could be useful in your debugging.

[JJrobots JP]

The key is to set the PEN UP and DOWN positions correctly adjusting their parameters. Every PEN has it own mass and the retraction behaviour will vary depending on it. The UP position should leave the tip of the PEN just mm away from the egg/ball surface

[LOlsen]

(03-12-2020 03:54 PM)JJrobots JP Wrote:  The key is to set the PEN UP and DOWN positions correctly adjusting their parameters. Every PEN has it own mass and the retraction behaviour will vary depending on it. The UP position should leave the tip of the PEN just mm away from the egg/ball surface

True, and I did as good as i could, taking the curvature of the egg into account. But shouldn't the speed setting actually influence the servo-speed?