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BTT TFT50 / Klipperscreen VERY slow

I'm still trying to finish building my ProForge 3.5... But during my pre-flight checks, I'm finding some issues. In particular, the screen is very slow to respond. Sometimes a touch is registered reasonably quick, but most of the time I have to press and hold the screen 2-4 seconds before it will register the touch.

I haven't finished my pre-flight checks, so I don't know if there's something else I have to do to configure it... But are there any experiences here?

4 comments

4 Comments

Peterg

Mar 12

I am running a Pi4 with 2gb. I do have heatsinks on the Pi, but no active cooling. Throttling is an interesting possibility; I hadn't considered. Is anyone else having throttling issues? Does anyone else activity cool their Pi?

Olivier Bertini

Mar 12

Replying to

I have pi 4 with 8gb, heatsinks and no active cooling. I do not experience the slowdown you are describing.

On Mainsail you can monitor the pi cpu usage. That should give you an indication.

Also, could it be a faulty ribbon cable? These cables tend to be unreliable at least in my experience.

Peterg

Mar 14

Replying to

Hmmm, I've tried a new ribbon cable, and the CPU doesn't seem to go above 50%... And I'm still seeing lag. Oddly enough, is not all the time. Sometimes it's quite responsive, but I can't tell what's causing it. I was just about to try my "first print" when the DSH servo arm stripped out. *sigh* Another problem to solve...

I may try some active cooling when I get a chance...

Olivier Bertini

Mar 09

Can't help much. Definitely too slow. Could it be linked to the rpi you are using? Could it overheat and throttle?