Testing the Adafruit PyPortal touchscreen

Display Deluxe

© Lead Image © donatos1205, 123RF.com

© Lead Image © donatos1205, 123RF.com

Article from Issue 237/2020

Unlike other displays for the Raspberry Pi, Adafruit's PyPortal touchscreen provides an autonomous environment, including a microprocessor, sound output, and a WiFi connection.

The Raspberry Pi has a hard time with small displays because support from Raspbian is surprisingly poor. Creating and implementing suitable interfaces is difficult with a dearth of off-the-shelf programs for controlling small displays. I'm quietly confident that the PyPortal intelligent touchscreen by Adafruit is a better solution.

PyPortal (Figure 1) is a small 3.2-inch networkable resistive touch display with an integrated microprocessor [1]. At $55 (EUR59), it is not exactly cheap, but considering its components, the price seems reasonable. A correspondingly sized 3.2-inch display plus a Pi Zero W with an SD card, at about the same price, will serve as a comparison with the PyPortal configuration.

PyPortal in Detail

The screen takes up almost all of the real estate on the front, with a mounting frame and a brightness sensor on the right side. Adafruit has cut costs on the display itself. The resolution of 320x240 pixels is more suitable for 2.8-inch devices. Resistive touch technology is also a way of saving cash, but it does mean you need a stable mounting – just touching the screen is not enough, you actually have to press it.


Use Express-Checkout link below to read the full article (PDF).

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Adafruit IO API

    The Adafruit IO API offers a convenient means for network-ready sensors and other components.

  • CircuitPython

    The CircuitPython run-time environment runs on almost all microcomputers and microcontrollers, making it perfect for cross-platform programming.

  • Perl – Memes

    It started off harmlessly enough with a few funny pictures of cats, but eventually it became the Internet phenomenon par excellence. It's no joke: Perl gives you some great tools for building and customizing memes yourself.

  • Wego

    Other applications have found less complex ways of showing the weather in a terminal, but none is as attractive as Wego.

  • Smart Picture Frame

    A digital picture frame displays photographs and a current weather forecast with just a few hundred lines of Bash and a Raspberry Pi.

comments powered by Disqus

Direct Download

Read full article as PDF:

Price $2.95