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Messages - Rage441

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OLEDs / Re: NHD0420CW-Ax3 display with Arduino Uno - Tutorials
« on: November 05, 2015, 09:44:21 PM »
Appreciate the help on this one, but still having issues.  I'm running the code in tutorial 1, I2C interface, 5v, Arduino Uno.   Tried changing the contrast value in the code and it has no effect.  Tried adding the code above and that has no effect either.  Sometimes the display dims a little, but it's not consistent.  I should be able to dim this right down to almost nothing.  The most change in brightness I've seen is maybe from 100% to 80%.  Was troubleshooting again tonight and now the display won't turn on.  Ran an I2C Scanner sketch and can see the I2C address of 3C for the display, So it's communicating.  Rechecked all input pins and they getting power and ground in the right places.  Tried reloading Tutorial 1 sketch to no effect.  Anyone have any ideas?

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OLEDs / Re: NHD0420CW-Ax3 display with Arduino Uno - Tutorials
« on: October 19, 2015, 11:44:06 PM »
Thanks for the great work on this.  Just got it running tonight.  I'm trying to change the brightness of the display, tried changing the contrast value, (0x7F is the default) but it doesn't seem to have any effect; am I missing something else?

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