ED-HMI2002-070C User Manual

1.1 Overview

The ED-HMI2002-070C is a 7-inch industrial HMI based on Raspberry Pi 4. According to different application scenarios and user needs, different specifications of RAM and SD card computer systems can be selected.

• RAM can choose 1GB, 2GB, 4GB and 8GB
• SD card can choose 32GB and 64GB

The ED-HMI2002-070C provides HDMI, USB 2.0, USB 3.0 and Ethernet interfaces, supporting access to the network through Wi-Fi and Ethernet.

The ED-HMI2002-070C integrates a 7-inch LCD touch screen and is mainly used in industrial control and IOT.

1.2 Packing List

• 1x ED-HMI2002-070C Unit

1.3 Appearance

Introducing the functions and definitions of interfaces on each panel.

1.5.1 Power Supply

The ED-HMI2002-070C includes one power input, and the silkscreen is "PWR IN". The connector is USB Type-C, which supports 5V 3A power input.

1.5.2 1000M Ethernet

The ED-HMI2002-070C includes one adaptive 10/100/1000M Ethernet port, RJ45 terminal with indicator, and the silkscreen is "1000M", which is used to access the Ethernet. The pins corresponding to the terminals are defined as follows:

Diagram illustrating the various ports and connectors on the ED-HMI2002-070C, labeled 1 through 8.

1.5.3 Audio

The ED-HMI2002-101C device contains 1 audio interface, 3.5mm four-section headphone terminal, and the silkscreen is ?. It supports OMTP specification stereo headphone output and single channel microphone recording.

1.5.4 HDMI

The ED-HMI2002-070C includes 2 HDMI ports, and the silkscreen is "HDMI". The connector is micro-HDMI, which can connect to HDMI displays and supports up to 4Kp60.

1.5.5 USB 2.0

The ED-HMI2002-070C includes 2 USB 2.0 ports, and the silkscreen is ☑. The connector is USB Type-A, which can connect to standard USB 2.0 peripherals and supports up to 480Mbps.

1.5.6 USB 3.0

The ED-HMI2002-070C includes 2 USB 3.0 ports, and the silkscreen is SS. The connector is USB Type-A, which can connect to standard USB 3.0 peripherals and supports up to 5Gbps.

2.1 Installing Raspberry Pi 4 (optional)

If the product model purchased by the customer does not include Raspberry Pi 4, Raspberry Pi 4 needs to be installed first.

Preparation:

• ED-HMI2002-070C and SD card have been obtained from the packaging box.
• Raspberry Pi 4 is ready.
• A cross screwdriver has been prepared.

Steps:

1. Insert the SD card into the SD card slot of Raspberry Pi 4.

   Image sequence showing an SD card being inserted into the Raspberry Pi 4's SD card slot.

2. Use a screwdriver to loosen 4 M3 screws on the ED-HMI2002-070C case counterclockwise, and remove the case.
3. Use a screwdriver to loosen 3 M2.5 screws on the ED-Pi4PCOOLER counterclockwise, and remove the cooler.

   Image sequence showing the removal of the ED-Pi4PCOOLER from the Raspberry Pi 4.

4. Place the Raspberry Pi 4 on the back of the LCD screen so that the installation holes of the Raspberry Pi 4 can align with the four stud holes on the back of the LCD screen.

   Image showing the Raspberry Pi 4 being placed onto the back of the LCD screen.

5. Pass the FPC cable through the reserved hole on the ED-Pi4PCOOLER.

   Image showing the FPC cable being passed through the ED-Pi4PCOOLER.

6. Plug the FPC cable into the CAMERA and DISPLAY ports of the Raspberry Pi 4 respectively.

   Image showing the FPC cable being connected to the CAMERA and DISPLAY ports of the Raspberry Pi 4.

7. Make 3 mounting holes of ED-Pi4PCOOLER align with the mounting holes of Raspberry Pi 4.

   Image showing screws being used to secure the Raspberry Pi 4 and ED-Pi4PCOOLER.

8. Insert 3 M2.5*12 screws and 1 M2.5*5 screw, then tighten them clockwise to secure the Raspberry Pi 4 and ED-Pi4PCOOLER to the back side of the LCD screen.
9. Plug the power cord into the corresponding 40-Pin on the Raspberry Pi 4.

   Image showing the power cord being plugged into the 40-Pin connector on the Raspberry Pi 4.

10. Cover the case, insert 4 M3 screws, and tighten clockwise to fix the case to the back of the LCD screen.

    Image showing the case being closed and secured with screws.

2.2 Embedded Installation

The ED-HMI2002-070C device supports embedded front installation. The Standard Package doesn't include the panel mounting accessories; please purchase the ED-ACCHMI-Front from our distributors in advance.

Preparation:

• ED-ACCHMI-Front accessory kit has been obtained (contains 4 buckles, 4xM4*10 screws and 4xM4*16 screws).
• A cross screwdriver has been prepared.

Steps:

1. Ensure the opening size of the cabinet according to the size of ED-HMI2002-070C, as shown in the figure below.

   Diagram illustrating the required cabinet opening dimensions for embedded installation.

2. Drill a hole on the cabinet according to the hole size of step 1.
3. Embed the ED-HMI2002-070C into the cabinet from the outside.
4. Align the screw hole (unthreaded hole) of the buckle with the buckle installation hole on the device.
5. Use 4 M4*10 screws to pass through the buckle and tighten it clockwise to fix the buckle to the device; then use 4 M4*16 screws to pass through the screw hole (threaded hole) of the buckle and tighten clockwise to the end through the buckles.

   Diagram showing the process of attaching buckles and securing them with screws for embedded installation.

3.1 Connecting Cables

This section describes how to connect cables.

Preparation:

• Accessories such as display, mouse, keyboard, and power adapter that can be used normally have been ready.
• A network that can be used normally.
• Get the HDMI cable and network cable that can be used normally.

Schematic diagram of connecting cables:

Please refer to 1.5 Interface for the pin definition of each interface and the specific method of wiring.

Schematic diagram illustrating the connection of display, keyboard, mouse, network, and power to the ED-HMI2002-070C.

3.2 Booting The System For The First Time

The ED-HMI2002-070C has no power switch. After the power supply is connected, the system will start.

The product is installed with the Desktop version system when it leaves the factory. After the device is started, it will directly enter the desktop.

Image showing the ED-HMI2002-070C displaying its desktop interface after booting.

For more information about Raspberry Pi 4 configuration operations, please refer to the documentation on the Raspberry Pi official website. The documentation path is: Raspberry Pi.

4.1 Finding Device IP

Finding device IP

4.2 Connecting To The Device Desktop Through VNC

After the device starts normally, you can choose to remotely connect to the device through VNC to configure or debug it.

Preparation:

• The RealVNC Viewer tool has been installed on PC.
• ED-HMI2002-070C has been connected to the network through the router.
• IP address of ED-HMI2002-070C has been obtained.
• The VNC function in the ED-HMI2002-070C system has been turned on, as shown in the following figure.

  Screenshot of Raspberry Pi Configuration utility showing VNC enabled.

Steps:

1. Open RealVNC Viewer and select "New connection..." in the File menu bar to open the window for creating a connection, as shown in the following figure.

   Screenshot of RealVNC Viewer showing the 'New connection...' dialog.

2. After entering the IP address of ED-HMI2002-070C, click "OK".

   Screenshot of RealVNC Viewer properties window for setting up a connection.

3. Enter the username and password in the Authentication prompt box that pops up.

   Screenshot of the VNC authentication prompt box asking for username and password.

   TIP: Default username is pi, Default password is raspberry.

4. Select "OK" to log in and connect to the remote desktop.

5.1 Downloading OS File

You can download the corresponding official Raspberry Pi OS file according to your actual needs; the download path is listed below:

5.2 Flashing to SD Card

It is recommended to use the Raspberry Pi official tools. The download paths are as follows:

• Raspberry Pi Imager: https://downloads.raspberrypi.org/imager/imager_latest.exe
• SD Card Formatter: https://www.sdcardformatter.com/download/

Preparation:

• The downloading and installation of the official tools to the computer have been completed.
• An SD card reader has been prepared.
• The OS file has been obtained.

Steps:

The steps are described using Windows system as an example.

1. Open the device case, then pull out the SD card.
   1. Remove the metal case of the ED-HMI2002-070C by unscrewing the 4 M3 screws on the metal case counterclockwise with a screwdriver.
   2. Remove the Raspberry Pi 4 by unscrewing the four screws that mount the Raspberry Pi 4 counterclockwise with a screwdriver.
   3. Pull out the SD card from the SD card slot of the Raspberry Pi 4.
2. Insert the SD card into the card reader, and then insert the card reader into the USB port of your computer.
3. Open SD Card Formatter, select the formatted drive letter, and click "Format" at the lower right to format.

   Screenshot of the SD Card Formatter utility.

4. In the pop-up prompt box, select "Yes".
5. When the formatting is completed, click "OK" in the prompt box.
6. Close SD Card Formatter.
7. Open Raspberry Pi Imager, select "CHOOSE OS" and select "Use Custom " in the pop-up pane.

   Screenshot of Raspberry Pi Imager showing the 'CHOOSE OS' menu with 'Use Custom' selected.

8. According to the prompt, select the OS file under the user-defined path and return to the main page.
9. Click "CHOOSE STORAGE", select the default device in the "Storage" interface, and return to the main page.

   Screenshot of Raspberry Pi Imager showing the 'CHOOSE STORAGE' menu.

10. Click "NEXT", select "NO " in the pop-up “Use OS customization?" pane.
11. Select "YES" in the pop-up “Warning” pane to start writing the image.

    Screenshot of Raspberry Pi Imager showing the OS writing process.

12. After the OS writing is completed, the file will be verified.

    Screenshot of Raspberry Pi Imager showing the file verification process.

13. After the verification is completed, click “CONTINUE” in the pop-up “Write Successful” box.
14. Close the Raspberry Pi Imager, remove the SD card.
15. Insert the SD card into the SD card slot of the Raspberry Pi 4 and close the device case.
    1. Insert the SD card into the SD card slot of the Raspberry Pi 4.
    2. Secure the Raspberry Pi 4 by tightening the 4 screws for mounting the Raspberry Pi 4 clockwise with a screwdriver.
    3. Tighten the 4 M3 screws on the metal case of the ED-HMI2002-070C clockwise with a screwdriver and close the device case.

5.3 Installing Firmware Package

After installing the standard Raspberry Pi OS on the ED-HMI2002-070C, you need to configure the system by adding the edatec apt source and installing the firmware package to make the system work. The following is an example of Debian 12 (bookworm) desktop version.

Preparation:

• The flashing to SD card of the Raspberry Pi standard OS (bookworm) has been completed.
• The device has booted normally and the relevant boot configuration has been completed.

Steps:

1. The ED-HMI2002-070C device has been successfully started and connected to the network.
2. Execute the following commands in sequence in the command pane to add the edatec apt source. curl -sS https://apt.edatec.cn/pubkey.gpg | sudo apt-key add echo "deb https://apt.edatec.cn/raspbian stable main" | sudo tee /etc/apt/sources.list.d/edatec.list sudo apt update

   Screenshot of a terminal window showing the output of 'sudo apt update' command.

   TIP: If you copy the command directly and there are line breaks when pasting, please delete the line breaks and add spaces in those places.

3. Execute the following command to install the firmware package. sudo apt install -y ed-hmi2002-070c-firmware ed-linux-image-6.6.31-v8
4. Restart the device after installation is complete. sudo reboot
5. If the screen still does not work after restarting, execute the following command to check whether the firmware package has been successfully installed. dpkg -l | grep ed-

   Screenshot of a terminal window showing the output of 'dpkg -l | grep ed-' command, indicating successful firmware installation.

   TIP: If you have installed the wrong firmware package, you can execute sudo apt-get --purge remove package to delete it, where "package" is the package name.