Michael_L

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Recent activity by Michael_L Recent activity Votes
  • There are two read commands available.  Status read, and Display data read.  This is the only time you would need to toggle the /RD signal as opposed to the /WR signal.  The way these signals work ...

  • I have quickly made a function for you that will write text to the desired location of the display.  It uses a font table in software, and I have provided both the function and font table below: un...

  • The recommended pull-up value is 10kΩ for each i2c line.  From the look of your pictures, 20kΩ seems to do the trick for you correct?I am not familiar with the NXP PCA9605, but it seems to me that ...

  • You should be fine with 6.86MHz.  Have you tried these values?  Does the display work?I got those values from the datasheet on page 35.  There is a diagram that illustrates the porch values.My apol...

  • I am having trouble deciphering your code, but I have some Arduino code for this display in 4-bit mode and I have posted it below: //---------------------------------------------------------/*NHD_0...

  • Have you accessed the NT39016D driver datasheet (from the link at the bottom of page 5 of our display datasheet)?  This is the document you should refer to for further details about our display and...

  • The code that I sent you is working code, I tested it this morning to be 100% certain.  Therefore, the problem should not lie within your software.  As for your power supply concern, what exactly d...

  • It seems you are experiencing a timing issue.  Can you try slowing down the SPI to see if you get the correct characters?Also please be aware of the execution times shown on page 7 of the datasheet.

  • The NXP PCA9605 could help, but I would like to ask if you could try isolating the display on the i2c bus, and see if the ACK gets pulled low enough when there are no other devices present on the bus.

  • I noticed you are using an i2c interface, and I just want to make sure you know this display only has a parallel interface.  I see you mentioned you are using an i2c I/O expander, so I will assume ...