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March 20, 2015 AT 10:00 am

UPDATED FOR PI 2 SUPPORT – Adafruit 2.8″ PiTFT – Capacitive Touch Tutorial #piday #raspberrypi @Raspberry_Pi

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UPDATED FOR PI 2 SUPPORT – Adafruit 2.8″ PiTFT – Capacitive Touch Tutorial

Our best-selling PiTFT just got a fancy upgrade, now we have a version with a capacitive touchscreen! That’s right, instead of a resistive touchscreen, which requires a fingernail or stylus, you can now use a fingerpad. The screen looks much nicer, with a black bezel and glass overlay.

Featuring a 2.8″ display with 320×240 16-bit color pixels and a capacitive touch overlay. The plate uses the high speed SPI interface on the Pi and can use the mini display as a console, X window port, displaying images or video etc. Best of all it plugs right in on top!

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Uses the hardware I2C Pins (SDA & SCL), SPI pins (SCK, MOSI, MISO, CE0) as well as GPIO #25 and #24. All other GPIO are unused. Since we had a tiny bit of space, there’s 4 spots for optional slim tactile switches wired to four GPIOs, that you can use if you want to make a basic user interface. For example, you can use one as a power on/off button. See below for the link to get the optional tact switches, they’re not included.

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The screen is the same size as the resistive type so you can use this with the PiTFT PiBow or any other enclosure you may already have. We also use the same SDL device and signals so PyGame and X11 based programs can be swapped in with no changes in code.

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It’s designed to fit nicely onto the Pi Model A or B rev 2 but also works perfectly fine with the Model B+ as long as you don’t mind the PCB overhangs the USB ports by 5mm, see the photos above. Model B rev 1 have an older layout for the I2C pins and won’t be able to use the touch screen

This version comes as a mini-kit, with a 2×13 extra-tall female header (to connect the plate to the Pi) and a 2×13 male header that can be used to connect an IDC cable or cobbler from the side. The photos above also show the optional installed slim tactile buttons. The tactile buttons are not included, but you can pick up a pack of 20 here. Some basic soldering is required to install the headers. You can also pick up an extra-long Pi stacking header if you want to install that instead of the 2×13 female header installed.

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