Round displays with touchscreen for Raspberry Pis

So far, there have only been a few round displays, and then they usually only have a size of two inches. Until now, you have searched in vain for touchscreens or larger diameters. Waveshare now offers an IPS display with a 4-inch diameter (4-inch DSI Round Touch Display), which also supports touch inputs. The display is connected to the DSI connector of the Raspberry Pi single-board computer, the touchscreen communicates via I2C.

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On the back of the display, in addition to the plug-in connections, there is also the option of setting the I2C address. In this way, two of these display units can be controlled on the same bus of a Raspberry Pi.

The connections for power supply, display and touchscreen are on sockets on the back of the display.

(Bild: Waveshare)

720p resolution

The resolution of the display is 720 × 720 pixels with a maximum frame rate of 60 Hertz and a viewing angle of 170 degrees. The surface is made of tempered glass. The touchscreen works capacitively and with 10-point recognition. The outer diameter is 128 mm with a depth of 17 mm. There are four spacers on the circuit board on the back, onto which you can screw either a Raspi 3 or Raspi 4.

The Raspberry can be piggybacked onto the display.

(Bild: Waveshare)

The screen is powered by the Raspi. Waveshare provides a detailed wiki for hardware and software installation. There are also preconfigured Linux images for Raspberry Pi 3 and 4. The brightness and orientation of the image can be controlled via software and the touchscreen.

The brightness can be adjusted and the image content rotated by touch.

(Bild: Waveshare)

The display costs around 90 US dollars from the manufacturer, and it is available from Amazon shops under various names from around 120 euros.

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(Link on https://www.waveshare.com/4inch-dsi-lcd-c.htm) (hgb)

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#displays #touchscreen #Raspberry #Pis