Compatibility check for 2.2in TFT display

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Dpark
 
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Compatibility check for 2.2in TFT display

Post by Dpark »

Hello everyone.

I'm just getting into this and about to take the plunge with purchases and wanted to get a compatibility check.

I'm planning on using adafruit's 2.2in TFT display (https://www.adafruit.com/products/1480) but was wondering which microcontroller to use. The project I am working on requires everything in as small a space as possible. So I am unsure whether to go for the Trinket (https://www.adafruit.com/products/1500) or the Pro Micro (https://www.sparkfun.com/products/12587). Both will be in 3.3V so I can use a Lipoly battery.

I am fairly new to this, so please forgive my ignorance. However, I think the trinket is not compatible because it doesn't have serial output connectors? As for the pro micro, will the processor difference b/w the Uno and the ProMicro be a significant problem if I'm trying to make a clock animation?

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adafruit_support_mike
 
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Re: Compatibility check for 2.2in TFT display

Post by adafruit_support_mike »

It won't work with a Trinket.. the TFT wants more of everything than that board has to offer.

The Pro Micro might work, but that isn't one of our products so we can't make any guarantees. Check with Sparkfun to see if anyone has used an ILI9340 TFT with it.

You might also try the Teensy 3.1: https://www.adafruit.com/products/1625 It's a different microcontroller than is used in the Arduino family, but can be programmed using the Arduino IDE. Paul Stoffregen (who makes the Teensy series of dev boards) works with us to maintain compatibility between his hardware and our libraries, so we know it works with the ILI9340 display.

The Teensy 2.0 might also work (https://www.adafruit.com/products/199) but I don't have a direct link to documentation saying so. Take a look over in the PJRC forums to see if anyone has experience with the ILI9340 and Teensy 2.0. (it's *really* small). http://forum.pjrc.com/forum.php

Dpark
 
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Re: Compatibility check for 2.2in TFT display

Post by Dpark »

Hi Mike,

Thank you. I was actually hesitant on the promicro since I'd read reports that the bootloader has a tendency to be corrupted and needs to be flashed again. D:


I was actually looking at the Teensy but wasn't sure about cross-compatibility with adafruit products. Thank you for clearing it up. The form factor is what I really am interested in (i.e. smallest I can get short of custom-printing a PCB).

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paulstoffregen
 
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Re: Compatibility check for 2.2in TFT display

Post by paulstoffregen »

If you use Adafruit's 1.8 inch TFT, there's an experimental highly optimized library for Teensy 3.0 & 3.1.

https://github.com/PaulStoffregen/Adafruit_ST7735

It's incredibly fast. :)

Dpark
 
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Joined: Thu Apr 17, 2014 3:13 pm

Re: Compatibility check for 2.2in TFT display

Post by Dpark »

Wow! That's certainly something to consider. Do you know what kind of performance I should expect?

Also, is there a guide on how to hook up the teensy 3.1 to the TFT? Is it the same as for the Uno R3?

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paulstoffregen
 
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Re: Compatibility check for 2.2in TFT display

Post by paulstoffregen »

Dpark wrote: Also, is there a guide on how to hook up the teensy 3.1 to the TFT?
See this file for details:

https://github.com/PaulStoffregen/Adafr ... edTest.ino

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