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Old 13th July 2012, 10:11 AM   #141
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Join Date: Mar 2007
Location: Bandung
Quote:
Originally Posted by emuman100 View Post
I built it with MPLAB IDE 8.x and the microchip C30 compiler. The OLED module I have has an inductor on it, so I assumed the filtering is adequate. I'll PM you the file.
I think inductor on OLED module for switching power supply not for filtering.
Any progress on your built?

Didiet
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Old 15th July 2012, 12:30 AM   #142
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Location: US
I think your right, it might be some DC to DC converter. I have yet to get it displaying anything teadable on the OLED with either of the two firmware sources I've built. I think there is a firmware issue. Either it's being compiled incorrectly or something is missing. I still haven't received the micro SD card, I was wondering if it might display the proper characters with the micro SD card inserted or show it's working.
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Old 15th July 2012, 03:49 AM   #143
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I got readable on my LCD after i change my VCC for LCD from 3.3V with 5V. But i got disk err with SD. I'll try with SDHC.

Didiet
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Old 15th July 2012, 09:34 PM   #144
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Quote:
Originally Posted by didiet78 View Post
I got readable on my LCD after i change my VCC for LCD from 3.3V with 5V. But i got disk err with SD. I'll try with SDHC.

Didiet
Did the data sheet of the LCD say 3.3V is supported? Did you get garbled characters on your LCD like I did on my OLED or was it just blank? I'll try connecting it to 5V instead and seeing if it'll display the correct characters. The data sheet said it would operate at that voltage so I assumed something else might have been wrong. Which firmware file that I sent you worked for you?
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Old 16th July 2012, 01:35 AM   #145
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Quote:
Originally Posted by emuman100 View Post
Did the data sheet of the LCD say 3.3V is supported? Did you get garbled characters on your LCD like I did on my OLED or was it just blank? I'll try connecting it to 5V instead and seeing if it'll display the correct characters. The data sheet said it would operate at that voltage so I assumed something else might have been wrong. Which firmware file that I sent you worked for you?
On datasheet, it says 2.7 - 5v. It display some character if you look on right angle, but it hard to read. I just try the KDA_US02_20091206a. Maybe some lost conections on LCD data port.

Didiet
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Old 20th July 2012, 10:17 AM   #146
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Just try with SDHC, it work, but audio out is not good, alot of noise.

Didiet
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Old 26th July 2012, 03:29 AM   #147
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I got a 3.3V LCD and I'm getting proper characters. The OLED must use a nonstandard controller. Like you, I also get a disk error. I'm using a Samsung micro SDHC. I'm almost certain there is no difference between a regular and micro SD card other than the size and pinouts. The next step is to try a different SD card. I removed the SD card and it seems like there is no difference in "loading" time, so I don't really know if it's a crappy card or what. It reads in my PC. Here is a picture of the card in the socket:
Click the image to open in full size.

Loading:
Click the image to open in full size.

Disk Error, with backlight:
Click the image to open in full size.
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Old 26th July 2012, 03:48 AM   #148
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What filesystem do you use? I use VGEN microSDHC witch adapter to SD card. It only support Fat and Fat32
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Old 26th July 2012, 06:37 AM   #149
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The micro SDHC card is 8GB and is fat32 formatted. I never reformatted it when I first got it, I just copied the wav files over. It is fat32 formatted, but I found a 16GB micro SDHC class 4, so I ordered it and will try it instead.
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Old 26th July 2012, 07:40 AM   #150
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I reformatted with fat32, i copied to subdir. When i just copied the wav files to root dir, i got Find err.
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