{"id":37938,"date":"2020-11-05T17:15:13","date_gmt":"2020-11-05T09:15:13","guid":{"rendered":"\/blog\/?p=37938"},"modified":"2021-06-10T14:54:29","modified_gmt":"2021-06-10T06:54:29","slug":"dont-have-an-hdmi-display-for-your-raspberry-pi-wio-terminal-lcd-got-you-covered-with-an-hmi-m","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2020\/11\/05\/dont-have-an-hdmi-display-for-your-raspberry-pi-wio-terminal-lcd-got-you-covered-with-an-hmi-m\/","title":{"rendered":"Don\u2019t Have an HDMI Display For Your Raspberry Pi? Wio Terminal LCD Got You Covered With a USB HMI!"},"content":{"rendered":"\n
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Introduction<\/h2>\n\n\n\n

When you get your hands on a Raspberry Pi<\/a> for the very first time, you might want to know how to actually log in to the Raspberry Pi so that you can start interacting with it. In my previous blog, I have already talked about a couple of methods of logging into a Raspberry Pi such as using a CP2102 USB to Serial Converter<\/a> and using a Seeeduino XIAO<\/a>. <\/p>\n\n\n\n

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However, in both the methods, we logged into the Raspberry Pi via a command-line interface. We could interact with the Raspberry Pi through Linux commands<\/a>, but there was no actual GUI (Graphical User Interface). The only way to interact with a Raspberry Pi via a GUI is by connecting it to an external display via the HDMI connection. <\/p>\n\n\n\n

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Wio Terminal LCD as Raspberry Pi GUI!<\/strong><\/h2>\n\n\n\n

Now I would like to explain a whole new approach to accessing the GUI on the Raspberry Pi without connecting to an external display, and that is by using a Wio Terminal<\/a>. <\/p>\n\n\n\n

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Wio Terminal is an ATSAMD51-based microcontroller with wireless connectivity supported by Realtek RTL8720DN and is equipped with a 2.4\u201d LCD Screen, onboard accelerometer (LIS3DHTR), Microphone, Buzzer, micro-SD card slot, Light sensor, and Infrared Emitter(IR 940nm). It is also compatible with both Arduino and MicroPython. <\/p>\n\n\n\n

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We could use the LCD on the Wio Terminal to display the Raspberry GUI just by connecting it to one of the USB ports on the Raspberry Pi. This becomes the Wio Terminal LCD, an HMI (Human Machine Interface) USB display for the Raspberry Pi. Furthermore, if you have more than one Wio Terminal, you could connect up to 4 Wio Terminals in total at the same time to the 4 USB ports available on the Raspberry Pi and set them to work in different modes such as Extend mode\/ Mirror Mode. I will discuss this later in this blog. I also want to mention that this method not only works for Raspberry Pi, but also works for Nvidia Jetson Nano, BeagleBone, and Odyssey X86J4105 as well!<\/p>\n\n\n\n

Wio Terminal Setup<\/strong><\/h2>\n\n\n\n

Now, let\u2019s dive into actually making the HMI display on the Wio Terminal to work! I will guide you through how to set up the Wio Terminal for the process.<\/p>\n\n\n\n

If this is the first time you are using the Wio Terminal, it is better if you visit this page<\/a> and do the initial setup for the Wio Terminal. After doing so, you can continue to the steps below. <\/p>\n\n\n\n

You need to upload an Arduino program to your Wio Terminal and there are 2 methods of doing this. <\/p>\n\n\n\n

Method 1 \u2013 Arduino IDE upload method<\/strong><\/h3>\n\n\n\n

Step 1<\/strong>:
Visit the Seeed_Arduino_USBDISP library repo here<\/a>.<\/p>\n\n\n\n

Step 2<\/strong>:
Go to \u201ccode\u201d and select \u201cDownload ZIP\u201d <\/p>\n\n\n\n

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Step 3<\/strong>:
Open Arduino IDE, go to \u201cSketch > Include Library > Add .ZIP Library\u201d and select the .zip file you just downloaded<\/p>\n\n\n\n

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Step 4<\/strong>:
Go to \u201cFile > Examples > Seeed_Arduino_USBDISP\u201d and select the example you prefer out of the two. <\/p>\n\n\n\n