Possible to toggle power on IO_0 to turn on/off PanelDue?
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This seems possible, but we've not had any luck just yet.. is it possible to setup IO_0 using M950 and then toggle power to the PanelDue with M42?
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@oozeBot the two data pins on IO0 are the UART pins for communication with the PanelDue. The other 3 pins are 3.3V, 5V, and GND, all fixed. there is not another controllable pin to manage the power.
if you do need to do this then you need to use something external to switch the power, controlled by one of the other duet outputs.
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We didn't ask our question very clearly, but I believe the answer remains the same - if you want to do this, use an external source as there is nothing on the Duet 6HC that can toggle the 5v rail, correct? Or would it be possible to pick up ground on another port and toggle that on and off as ground is tied between 5v and VIN?
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@oozeBot said in Possible to toggle power on IO_0 to turn on/off PanelDue?:
Or would it be possible to pick up ground on another port and toggle that on and off as ground is tied between 5v and VIN?
You mean like using a negative fan terminal since it's switchable?
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@Phaedrux Sorry for the delay in response. Yes, that is what I mean.. Don't the ports switch on ground? And since the 12v and 5v grounds are tied, it seems doable - but is it advisable?
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@oozeBot the fan ports switch to ground. The 5v, 12v and 24v are all from the same source so switch away
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@oozeBot The problem with switching the ground to turn off the PanelDue is that you need to be sure there is not some other ground that will end up completing the circuit instead. So for instance if the data cable between the PanelDue and the main board has a ground wire (which it seems to have) then you may find that current will flow via that. I had a quick look and couldn't find a schematic for the PanelDue so I'm not sure if the ground wire that is part of the 4 wire connector is isolated in some way or not (my guess is not).
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@gloomyandy schematics are here https://github.com/dc42/PanelDue
