Lock switch for PanelDue

[zapta]

If anybody is interested a PanelDue lock switch that disable the touchscreen, it's actually pretty easy to do. All you need to do is disconnecting the T_IRQ signal and connect it via a toggle switch. When the switch is off, the touch is disabled but the display continues to work normally.

The T_IRQ signal is normally high and is pulled low by the touch controller when pressed. It's pulled up on the microcontroller side so it stays high as desired when the toggle switch is disconnected.

PanelDue schematic here, T_IRQ is connected to pin 28 of the large connector.

https://raw.githubusercontent.com/dc42/PanelDue/master/PCB/V3.0/PaneDue-3.0-schematic.png

(I am using a tethered display and got tired of placing it in a desk drawer during longs prints to protect it from the cat).

[Danal]

Nifty.

Lots of people have wanted this for shows and conferences.

Nifty. Clever, even.

[A Former User]

@zapta said in Lock switch for PanelDue:

protect it from the cat

beats mine "cover" solution
Great work!!! thanks

maybe software feature to disable this makes sense too and is easier for those not savy with soldering iron ... I wanted to look at paneldue firmware for a while this might be finally a trigger