Comments (5)
benkrasnow
commented on July 18, 2024
The design requires more power (and voltage, if I recall) than USB can deliver. So, I made the choice to only power the device from the external supply. You could power up the MCU via USB, but then nothing else on the device would work, so that doesn't make sense from a usability standpoint.
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rrainey
commented on July 18, 2024
Thanks, that all makes sense. Does that mean you are not using the USB for any purpose at all, or simply that you are taking power from the power plug but will still occasionally hook up the USB for talking to the MCU?
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benkrasnow
commented on July 18, 2024
USB is how the MCU is programmed, and the only way that data are sent to the display in operation, so yes, it is used.
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rrainey
commented on July 18, 2024
I'm asking as I look ahead to the development/test/debug required to integrate a display board into a larger DSKY replica of my own design. If I need to resort to SWD/SWC prgramming, I can -- just wondering what to expect might work ...
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rrainey
commented on July 18, 2024
Got it. Thanks
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Related Issues (11)
- License is missing HOT 1
- BOM? HOT 14
- Awesome HOT 1
- Common current limiting resistors HOT 1
- Airbrushing the Lumilor paint HOT 2
- HV507 Common line: diode protection and current limiting HOT 5
- Current limiting resistor array modification HOT 2
- Serial USB interface testing HOT 2
- KiCad Driver Project SCH file does not include HV507 to connector wires HOT 2
- Not an issue; Just an interesting reference on EL current limit resistor selection. HOT 4
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