7'' HDMI Display with Capacitive Touchscreen


This is a 7" HDMI display with capacitive touchscreen. It comes with a 7" LCD screen with capacitive touch panel overlay on it. The touch panel supports up to 5 touch points. And it adopts DFRobot USB free-driver technology, no special requirement of drivers. You can use it as easy as keyboard or mouse. It can be directly plugged to PC for touching control. In combination with HDMI HD screen, it can turn a large PC to a tablet immediately.

The screen supports Windows, Linux and MAC OS. It can be used on Lattepanda, Raspberry Pi and other HDMI device. We also make some special hole to make it compatible with Arduino screw hole. You can mount them on the back of the display directly.

There is no need for external power supply for the screen, it can be powered by USB port and HDMI port. The display also supports back light adjustment. It is very convenient to adjust backlight by potentiometer on the back of the display.

warning_yellow.png Note: Please guarantee the external power supply current is above 1.5A@5V when it is driven by raspberry Pi. The lower current will reduce the touching sensitivity.



Screen Overview


Touchscreen with Raspberry Pi

You need to reset resolution to avoid touch differentiation caused by resolution difference between Raspberry Pi and the Touchscreen.

#### remove black borders

#### set specific CVT mode
hdmi_cvt 1024 600 60 6 0 0 0

#### set CVT as default

NOTE: Windows and MAC operating system can capture resolution automatically, so you don't need to modify any parameter.

Firmware Update

Dfu-util (Device Firmware Upgrade Utilities) is a free, open-source, cross-platform firmware update program, it is easy to update firmware for devices with microcontrollers without platform limitations. More information: http://dfu-util.sourceforge.net

In Windows

1. Download the USB installation tool zadig.exe Address: https://zadig.akeo.ie/

2. Enter dfu mode Short-circuit the boot's two pins, and then connect it to the computer via USB

3. Install winUSB

Click Options, check All Devices(1)

Select "STM32 DFU" in the drop-down box (2)

Select "WinUSB" (3)

Click Install Driver(4)

If there is a dialog box, click Continue to install.

When installing winUSB with zadig fails, the following interface will appear. (Win10 does not have the same situation.)

Win 7 (32-bit/64-bit) Download msvcr100d.dll, place it in the C:\Windows\System32 directory, and then re-install the driver. There will be no mistakes.

Win 8 32-bit Download msvcr100d.dll, place it in the C:\Windows\System32 directory, and then re-install the driver.

64-bit Download msvcr100d.dll, place it in the same directory as zadig.exe. (There will be a new error in the C:\Windows\System32 directory)

In Linux

In Mac

Search for "terminal" on the top of the screen. Open the terminal


Q&A Some general Arduino Problems/FAQ/Tips
Q After connected Raspberry Pi, the sensitivity of the touchscreen became very poor and the response became lower. How to solve it?
A 1. Please check the power of Raspberry Pi. When using the touchscreen, the minimum power supply is 1.5V. 2. Check the resolution configuration, we wrote the Raspberry Pi tutorial for your reference.
A For any questions, advice or cool ideas to share, please visit the DFRobot Forum.

More Documents