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This Open Supply Common TFT Show Backpack Is Prepared for Tiny TFT Graphics Library 2 Tasks



David Johnson-Davies has designed a “common” board for driving widespread coloration TFT LCD panels, providing an I2C interface for simple connection to exterior {hardware}: the Common TFT Show Backpack.

“This venture is a microcontroller board, based mostly on an ATtiny414, that may accommodate a variety of various Adafruit and AliExpress coloration TFT shows,” Johnson-Davies explains. “Whereas engaged on my Tiny TFT Graphics Library I wanted to check it with a number of totally different TFT shows on a prototyping board, and seen that lots of them, with a small variety of exceptions, had certainly one of two commonplace pin connection layouts.

“That gave me the thought of designing a breakout board that might take any of those shows, and be a terrific place to begin for quite a lot of display-based initiatives.”

The Tiny TFT Graphics Library, which acquired a significant replace this week, is fully suitable with the Backpack board — although its microcontroller can be programmed instantly, for individuals who’d desire, with out use of the library. True “common” compatibility on the {hardware} entrance could also be pushing issues, maybe, however Johnson-Davies has examined the board with a variety of widespread shows from 0.96″ to 2.4″ from Adafruit and AliExpress with nice success — utilizing an 11-pin and eight-pin header respectively for every household.

“The show connection header pin holes are staggered,” Johnson-Davies notes, “so you possibly can push the show in place, and it’ll keep firmly related with out soldering. That is particularly helpful if you wish to strive totally different shows in an software. Though you would drive these TFT shows from an 8-pin ATtiny processor such because the ATtiny402, I made a decision to base the board on a 14-pin machine, such because the ATtiny414, to permit it to supply […] further optionally available options.”

These options: I2C help, to permit the microcontroller to drive an exterior sensor or different suitable {hardware} along with the show’ optionally available connections to backlight and SD Card choose pins, dropped at an edge connector in case you’d desire to make use of them for another function; and room for a crystal oscillator for clock initiatives.

Johnson-Davies has launched the board’s Eagle design recordsdata on GitHub beneath an unspecified open-hardware license, promising compatibility with “any of the brand new 0-series, 1-series, or 2-series 14-pin microcontrollers” from the ATtiny404 as much as the ATtiny3224.

Extra particulars can be found on Johnson-Davies’ web site.

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