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#1 2021-12-21 06:01:37

Rahul
Member
Registered: 2019-11-27
Posts: 35

Mistimed UV LED turn-off post cure for layers

Hello,
I have recently noticed a weird issue with regards to the UV LED light turnoff post-layer curing. Normally, just after the layer exposure is done, the LCD goes blank and layer peel movements kicks-in.

However, for a few layers, the UV LED stays on for a little while longer after finishing layer exposure & LCD goes blank and turns off while peel movement is happening. Has anyone else too noticed this?? Thanks!

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#2 2021-12-25 06:59:56

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,518

Re: Mistimed UV LED turn-off post cure for layers

Have you checked sequence of UV LED on / off on code boxes?

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#3 2021-12-25 09:44:50

Rahul
Member
Registered: 2019-11-27
Posts: 35

Re: Mistimed UV LED turn-off post cure for layers

Shahin,
LED on / off is controlled via the ShutterOpen & Close Gcode boxes. While the peel movements are instructed on the beforelayer and afterlayer Gcode.

Also, this doesn't happen for all layers, it randomly occurs for a few layers.

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#4 2022-01-01 10:09:20

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,518

Re: Mistimed UV LED turn-off post cure for layers

Shutter codes run in parallel, so try to move those codes into before and after inputs to prevent random actions

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#5 2022-01-02 04:51:26

Rahul
Member
Registered: 2019-11-27
Posts: 35

Re: Mistimed UV LED turn-off post cure for layers

That makes sense for the random behavior. I will have the shutter codes moved to before and after layer gcode.


Though, this will mean UV Lamp cannot be turned on/off separately.

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#6 2022-01-02 06:47:13

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,518

Re: Mistimed UV LED turn-off post cure for layers

It depends on gcode and firmware being used there are ways to keep it async but in my opinion it does not worth it.

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#7 2022-01-02 09:37:17

Rahul
Member
Registered: 2019-11-27
Posts: 35

Re: Mistimed UV LED turn-off post cure for layers

Totally agree!

Moreover there are workarounds to achieve the functionality I mentioned

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