Projects and Gadgets

[hop]

I found a way to get the display up and running, and it came from a source slightly off the beaten path. If I am right, getting it to work should take no time at all. Just discovered it though and it is late on a date night. More tomorrow morning when my mind is fresh and I have the day to myself for working on this.

More when I wire and code it.

[hop]

WOOHOO! I got it working!!

I must have had it wired incorrectly on my first try, although I looked and looked again.

It's not as bright as I had hoped however. I wonder if it is a dimmer setting I haven't read about yet.

I'll post exactly what I did to get this working in about an hour. I have to, because I searched all over the internet looking for info and didn't find anything.

CHEERS!

[hop]

I discovered the digilent basic I/O shield on their site while I was searching for information on how I could wire up my OLED to the chipKIT Max32. While I was checking it out, I noticed that it had a 128x32 OLED already on the board. A closer look revealed that the display is an SSD1306!

At first I looked at the schematic for the shield, but I couldn't figure out how it was wired up. Mostly likely it was me that was reading it wrong. So I turned to the libraries and looked at the defines to see what pins were being used. After matching up the ports/bits with a table showing all available on the Max32, it was a snap.

And the sweet thing is, the libraries do not need any modification. Not even the example demo sketches. I modified the message text for this post of course. Also included with the libraries is a graphics support. Lines, circles, blocks, etc. Lots to play with!

I tied CS to ground via a 10k resistor as it is in the basic I/O shield schematic. I also connected the grounds, and Vin to 5v out on the Max32, thinking it would brighten the display but it didn't. 3v3 works just as well.

More when I code it. At least now I know it works. Sweet!
Basic I/O Shield libraries - PAGE DOWNLOAD

chipKIT driving SSD1306 128x32 SPI

prototype bread board images 001s.jpg (439.45 KiB) Viewed 1179 times

Connections between the two

pin assignments.jpg (50.5 KiB) Viewed 1179 times

[majenko]

Looking good. The brightness is probably down to the electronics driving it on the breakout board.

[hop]

Looking good. The brightness is probably down to the electronics driving it on the breakout board.

I thought that too. The 128x64 version is a little more involved when it comes to powering it, and the user has a lot more control over vbat (I think). I'm investigating and will check more into it when I get the 128x64 version.