Display for teensy 3.2

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The various flavours of ili SPI driven LCDs are easy enough to get working, buying PJRC/adafruit etc where they come with an example wiring and library can save some head scratching since cheaper boards will have whatever random pinout and config the OEM picked that you may need to tweak settings to get working. The small 64*128 and 32*128 OLEDs also work if you are after that style of display.
 
The Adafruit version has a micro SD on the back?

Some of the Adafruit OLED displays have a micro SD card on the back (specifically the 1.5" 128x128 display, the 0.96" 96x64 display, and the 1.27" 128x96 display). Note, I've used the 1.5" 128x128 display, and I had to slow down the Teensy to 24Mhz when I was using a graphics intensive program (uncanny eyes) with the Adafruit display (others have had to slow it down to various speeds). I had better luck with the New Haven 128x128 display, as my displays could go at 48Mhz without gettng corruption.

The two 2.8" 240x320 TFT displays that have touch screens (like the one in the PJRC's store) do have micro-sd cards. Paul's display does have a micro-SD card reader, but evidently you need to make a modification to get it to work.
 
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Is the SD card connected directly to the ILI9341, or can you use any SPI connected SD?
 
It depends what kind of display you are looking for. As you see from previous comments, you can get OLED, LED, LCD, ets. displays. I'm successfully using 5" and 7" TFT displays with capacitive touch screen from buydispay.com. Both displays the 5" http://www.buydisplay.com/default/5-inch-tft-lcd-module-800x480-display-controller-i2c-serial-spi and the 7" http://www.buydisplay.com/default/7-inch-lcd-module-capacitive-touch-screen-panel-i2c-spi-serial have RA8875 chip that can be used with the library from Sumotoy found here: https://github.com/sumotoy/RA8875
Good luck with your project!
 
I really liked the smaller ili9341 320x240 color display (without touchscreen) and was sad to see them disappear from the pjrc webstore. I think I can find these on eBay, but for policy reasons I can't purchase them from eBay. Does anyone know another reputable vendor for these at the ~$8 price point?

Furthermore, what might be involved in a test fixture and routine I could use to put these displays through their paces? is a flashing white/black screen enough to check for dead pixels and general operation? What is the primary failure mode of these displays?
 
Furthermore, what might be involved in a test fixture and routine I could use to put these displays through their paces?

This is the hardware we use for testing these displays:

https://www.oshpark.com/shared_projects/TG395I75

Actually, I believe there was one more rev after this one, which added a pair of status LEDs and a pushbutton, and a transistor to turn the display's power on/off. Nothing really fancy.

What is the primary failure mode of these displays?

Most of the rejects are due to cracked or chipped screens. A smaller number are "dead", usually the screen all black or all white. We don't diagnose them to discover why. On rare cases the touch panel is installed backwards.
 
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