Difference between revisions of "3.5inch HDMI LCD"
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4) Append the following lines to the config.txt file which is located in the root of the card: | 4) Append the following lines to the config.txt file which is located in the root of the card: | ||
− | + | <pre> | |
− | + | max_usb_current=1 | |
− | + | hdmi_group=2 | |
− | + | hdmi_mode=87 | |
− | + | hdmi_cvt 800 480 60 6 0 0 0 | |
− | + | hdmi_drive=1 | |
+ | </pre> | ||
5) The LCD will display after booting up. Then open a terminal to install the touch driver which can be found in the /boot/ directory. | 5) The LCD will display after booting up. Then open a terminal to install the touch driver which can be found in the /boot/ directory. | ||
− | + | <pre> | |
− | + | tar xzvf /boot/LCD-show-*.tar.gz | |
− | + | cd LCD-show/ | |
− | + | # There are two LCD resolution modes, choose one of the two to execute. | |
+ | ./LCD35-HDMI-480x320-show | ||
+ | ./LCD35-HDMI-800x480-show | ||
+ | </pre> | ||
Touch function will work after restart. For ease of use, you can set the screen orientation, see: [[#Screen orientation settings]]. | Touch function will work after restart. For ease of use, you can set the screen orientation, see: [[#Screen orientation settings]]. | ||
Line 55: | Line 59: | ||
After touch driver installed, the screen orientation can be set by these commands: | After touch driver installed, the screen orientation can be set by these commands: | ||
* 0 degree rotation | * 0 degree rotation | ||
− | + | <pre> | |
− | + | cd LCD-show/ | |
+ | # Choose one of the two to execute | ||
+ | ./LCD35-HDMI-480x320-show 0 | ||
+ | ./LCD35-HDMI-800x480-show 0 | ||
+ | </pre> | ||
* 90 degree rotation | * 90 degree rotation | ||
− | + | <pre> | |
− | + | cd LCD-show/ | |
+ | # Choose one of the two to execute | ||
+ | ./LCD35-HDMI-480x320-show 90 | ||
+ | ./LCD35-HDMI-800x480-show 90 | ||
+ | </pre> | ||
* 180 degree rotation | * 180 degree rotation | ||
− | + | <pre> | |
− | + | cd LCD-show/ | |
+ | # Choose one of the two to execute | ||
+ | ./LCD35-HDMI-480x320-show 180 | ||
+ | ./LCD35-HDMI-800x480-show 180 | ||
+ | </pre> | ||
* 270 degree rotation | * 270 degree rotation | ||
− | + | <pre> | |
− | + | cd LCD-show/ | |
+ | # Choose one of the two to execute | ||
+ | ./LCD35-HDMI-480x320-show 270 | ||
+ | ./LCD35-HDMI-800x480-show 270 | ||
+ | </pre> | ||
== Touch screen calibration == | == Touch screen calibration == | ||
Line 107: | Line 127: | ||
* [http://www.waveshare.com/w/upload/7/76/Win32DiskImager.zip Win32DiskImager] | * [http://www.waveshare.com/w/upload/7/76/Win32DiskImager.zip Win32DiskImager] | ||
* [http://www.waveshare.com/w/upload/5/56/Putty.zip PuTTY] | * [http://www.waveshare.com/w/upload/5/56/Putty.zip PuTTY] | ||
− | === | + | === General Tutorial Series === |
− | + | * [[Raspberry Pi Tutorial Series]] | |
− | * [ | ||
− | |||
− | |||
− | |||
== FAQ == | == FAQ == | ||
{{RPI HDMI GPIO LCD FAQ}} | {{RPI HDMI GPIO LCD FAQ}} |
Revision as of 02:32, 13 May 2017
| ||
Introduction
480x320, 3.5inch Resistive Touch Screen LCD, HDMI interface, IPS Screen, Designed for Raspberry Pi
More |
Getting Started
Hardware Connection
- Plug the LCD to your Raspberry Pi:
- There are 40 pins on Raspberry Pi Model A+/B+/2 B/3 B but only 26 pins on the LCD, so you should pay attention to connecting the pins to your Pi accordingly.
- Connect the HDMI Connector to both the HDMI interfaces on the LCD and the Pi.
- You should connect the LCD to Raspberry Pi Model B or Raspberry Pi Zero with an HDMI cable rather than an HDMI Connector.
- Turn on the "backlight" switch on the back of the LCD.
You can enable the touch in two ways: Method 1. install driver to your Raspbian/Ubuntu Mate OS. Method 2. use the Ready-to-use image file of which LCD driver was pre-installed.
Method 1. Driver installation
Description: The driver can be downloaded from github
git clone https://github.com/waveshare/LCD-show.git
1) Download the Raspbian / Ubuntu Mate image from Raspberry Pi website and extract it on a PC.
2) Connect your micro SD card to the PC and write the image to the card using Win32DiskImager. How to write an image to a micro SD card for your Pi? See RPi Image Installation Guides for more details)
3) Copy the LCD driver to the micro SD card (or copy the driver to the system of Pi using a USB drive).
4) Append the following lines to the config.txt file which is located in the root of the card:
max_usb_current=1 hdmi_group=2 hdmi_mode=87 hdmi_cvt 800 480 60 6 0 0 0 hdmi_drive=1
5) The LCD will display after booting up. Then open a terminal to install the touch driver which can be found in the /boot/ directory.
tar xzvf /boot/LCD-show-*.tar.gz cd LCD-show/ # There are two LCD resolution modes, choose one of the two to execute. ./LCD35-HDMI-480x320-show ./LCD35-HDMI-800x480-show
Touch function will work after restart. For ease of use, you can set the screen orientation, see: #Screen orientation settings.
Method 2. Using Ready-to-use image
The image file with pre-installed driver is located in the IMAGE directory of the CD. Extract the .7z file and you will get an .img file. Write the image to your micro SD card (How to write an image to a micro SD card for your Pi? See RPi Image Installation Guides for more details). Then insert the card to your Pi, power up and enjoy it.
Screen orientation settings
After touch driver installed, the screen orientation can be set by these commands:
- 0 degree rotation
cd LCD-show/ # Choose one of the two to execute ./LCD35-HDMI-480x320-show 0 ./LCD35-HDMI-800x480-show 0
- 90 degree rotation
cd LCD-show/ # Choose one of the two to execute ./LCD35-HDMI-480x320-show 90 ./LCD35-HDMI-800x480-show 90
- 180 degree rotation
cd LCD-show/ # Choose one of the two to execute ./LCD35-HDMI-480x320-show 180 ./LCD35-HDMI-800x480-show 180
- 270 degree rotation
cd LCD-show/ # Choose one of the two to execute ./LCD35-HDMI-480x320-show 270 ./LCD35-HDMI-800x480-show 270
Touch screen calibration
- This LCD can be calibrated using a program called xinput_calibrator which can be downloaded from Xinput-calibrator_0.7.5-1_armhf
- Extract and copy the software Xinput-calibrator_0.7.5-1_armhf.deb to the Raspbian of your Pi.
- Install it with the commands:
sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb
- Click the "Menu" button on the task bar, choose "Preference" -> "Calibrate Touchscreen".
- Finish the touch calibration following the prompts. Maybe rebooting is required to make calibration active.
- You can create a 99-calibration.conf file to save the touch parameters (not necessary if file exists).
/ect/X11/xorg.conf.d/99-calibration.conf
- Save the touch parameters (may differ depending on LCD) to 99-calibration.conf, as shown in the picture:
Interface
PIN NO. | SYMBOL | DESCRIPTION |
---|---|---|
1, 17 | 3.3V | Power positive (3.3V power input) |
2, 4 | 5V | Power positive (5V power input) |
3, 5, 7, 8, 10, 11, 12, 13, 15, 16, 18, 24 | NC | NC |
6, 9, 14, 20, 25 | GND | Ground |
19 | TP_SI | SPI data input of Touch Panel |
21 | TP_SO | SPI data output of Touch Panel |
22 | TP_IRQ | Touch Panel interrupt, low level while the Touch Panel detects touching |
23 | TP_SCK | SPI clock of Touch Panel |
26 | TP_CS | Touch Panel chip selection, low active |
Resource
Driver
The driver can be downloaded from github
git clone https://github.com/waveshare/LCD-show.git
Software
General Tutorial Series
FAQ
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- Make sure the hardware connection is correct and the contact is good.
- Make sure that TF card programming is normal.
- When the Raspberry Pi starts normally, the PWR light is always on, and the ACT light is flashing. If it is found that both lights are always on, it may be that the TF card is not successfully programmed to the image or the TF card is in poor contact with the Raspberry Pi.
- It is recommended to use a 5V 2.5A power adapter for the Raspberry Pi. If the Raspberry Pi is powered by the USB port of the PC, the Raspberry Pi may not be able to start normally due to an insufficient power supply.
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Support
Support
If you require technical support, please go to the Support page and open a ticket.