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Topics - EK701

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OLEDs / NHD-2.7-12864UCY3 brightness/contrast adjusting
« on: September 04, 2014, 11:57:57 AM »
Is the 0x81 command the correct one to adjust the brightness/contrast on the NHD-2.7-12864UCY3?  If not, what is?  What is the acceptable range?  0-255? 

OLEDs / NHD-2.7-12864UCY3 ground question
« on: August 05, 2014, 07:19:05 PM »
Is there any reason I can't tie all the grounds to together at the NHD-2.7-12864UCY3 and only run one ground wire to the MCU?

OLEDs / NHD-2.7-12864UMY3 - VDD short to VSS
« on: July 26, 2014, 06:44:27 PM »
I've been using an NHD-2.7-12864UMY3 to do a bunch of prototyping and I think I've managed to cause an electrical issue with it.  With the display not connected to anything, there is a short between VDD (pin 2) and VSS (at any VSS point on the display PCB).  Resistance is about 45 ohms.  I've visually inspected everything, but I don't see anything obviously wrong.

Is there any way for me to trouble shoot this (schematic available?)

OLEDs / NHD-2.7-12864UMY3
« on: June 04, 2014, 11:50:32 PM »
I'm trying to use the NHD-2.7-12864UMY3 with an Arduino Micro and am having difficulties with the electrical interface.  I am unable to get the display to turn on.  If I provide +3.3VDC and GND to the display, with nothing else connected, should the display light up?  I checked the pins on the PCB on the display and I see +3.3VDC on what I think are the appropriate pins.  Do you have some troubleshooting tips, test points, etc. that would help me out?

A detailed schematic and Arduino code is available here:


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