Waveshare 3.5 Inch RPi LCD User Manual
- June 15, 2024
- WAVESHARE
Table of Contents
Waveshare 3.5 Inch RPi LCD
Product Information
Specifications
- Size: 3.5 inches
- Resolution: Touch Port
- SPI
- Display Port
- Touch Type: Resistive
- Viewing Angle: IPS
- Consumption: Lower Power
Product Usage Instructions
Warnings
- Please read this user manual carefully before using the display. Incorrect use may cause irreparable damage or even electric shock and fire.
- To prevent fire disaster or electrical shock, do not put the display in humidity or worse conditions.
- Avoid placing the display in any damp area to prevent dust, moisture, and extreme temperatures. Place the device on a stable surface when in use.
- Do not put any object or splash any liquid into the ports or openings of the display.
- Before using the display, ensure that all cables are connected properly and all cables, including the power cord, are suitable for use. If any cables or accessories are missing or broken, contact Waveshare immediately.
- Do not attempt to take apart the PCBA and the raw display panel as it may damage the display panel. If you encounter any problems, please contact our Support Team by ticket.
- The display glass may break when dropped or bumped on a hard surface. Handle with care.
Features
- Compatible and can be directly inserted into any version of Raspberry Pi.
- Provides drivers that work with your own Raspbian/Ubuntu/Kali and Retropie system directly.
- IPS screen with a large viewing angle for excellent display effect.
- Supports FBCP software driver, which can set the software resolution and enable dual-screen display.
- Gold sinking process and fine carving for a premium look.
Interfaces
| 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, 12, 13, 15, 16 | NC | NC |
| 6, 9, 14, 20, 25 | GND | Ground |
| 11 | TP_IRQ | Touch Panel interrupt, low level while the Touch Panel detects |
touching
18| LCD_RS| Instruction/Data Register selection
19| LCD_SI / SPI| Data input of LCD/Touch Panel
21| TP_SO| SPI data output of Touch Panel
22| RST| Reset
23| LCD_SCK / TP_SCK| SPI clock of LCD/Touch Panel
24| LCD_CS| LCD chip selection, low active
26| TP_CS| Touch Panel chip selection, low active
Display Setting
- Write Raspberry Pi OS image to the TF card by using Raspberry Pi Imager, which can be downloaded from the Raspberry Pi official website.
- Insert the TF card into the Raspberry Pi board. The LCD will display after booting up.
- Login to the Raspberry Pi terminal (You may need to connect a keyboard and HDMI LCD to Pi for driver installing, or log in remotely with SSH).
- In the Raspberry Pi terminal, execute the following commands:
git clone https://github.com/waveshare/LCD-show.git
cd LCD-show/The Raspberry Pi must be connected to the network throughout the process.
If you have the new version, use this command:
chmod +x LCD35B-show-V2
./LCD35B-show-V2If you have the old version, use this command:
chmod +x LCD35B-show
./LCD35B-showFAQ
Q: How do I check if all the accessories are packaged properly?
A: Before using the product, please check if all the accessories are
packaged properly and in perfect condition.
Q: What should I do if any cables or accessories are missed or broken?
A: If any cables or accessories are missed or broken, please contact
Waveshare immediately.
Q: Can I take apart the PCBA and the raw display panel?
A: Do not attempt to take apart the PCBA and the raw display panel as it
may damage the display panel. If you face any problem about the display,
please contact our Support Team by ticket.
3.5INCH RPI LCD (B) User Manual
ACCESSORIES
Before using the product, please check if all the accessories are packaged properly and in perfect condition
WARNING
Please read this user manual carefully before you use the display. Incorrect use may cause irrepara-ble damage or even cause electric shock and fire. To avoid damaging the display, please observe the following rules during the installation and using.
- To prevent from fire disaster or electronic shock, please do not put the display in humidity or even in a worse condition;
- To avoid dust, moisture and extreme tempera-tures, please DO NOT please the display in any damp area. Please place the device on a stable surface when in use;
- DO NOT put any object or splash any liquid into the ports of openings of the display;
- Before using the display, please make sure all the cables are connected properly and all the cables included the power cord are proper to use. If any cables or accessories are missed or broken, please contact Waveshare immediate-ly;
- DO NOT attempt to take apart the PCBA and the raw display panel, which may damage the display panel. If you face any problem about the display, please contact our Support Team by ticket;
- The display glass may break when it is dropped or bumped on a hard surface, please handle with care.
SPECIFICATION
The hardware resolution is 480 × 320.
- Resistive touch control.
- It is compatible and can be directly inserted into any version of Raspberry Pi.
- Provide drivers (works with your own Raspbian/Ubuntu/Kali and Retropie system directly).
- IPS screen, large viewing angle, excel-lent display effect.
- Support FBCP software driver, which can set the software resolution and dual-screen display.
- As big as your Raspberry pi.
- Gold sinking process, fine carving.
INTERFACES
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,
12, 13, 15, 16
|
NC
|
NC
6, 9, 14, 20, 25| GND| Ground
11
|
TP_IRQ
|
Touch Panel interrupt, low level while the Touch Panel detects touching
18
|
LCD_RS
|
Instruction/Data Register
selection
19
|
LCD_SI / TP_SI
|
SPI data input of LCD/Touch Panel
21
|
TP_SO
| SPI data output of Touch Panel
22| RST| Reset
23
| LCD_SCK / TP_SCK|
SPI clock of LCD/Touch Panel
24
|
LCD_CS
|
LCD chip selection, low active
26
|
TP_CS
|
Touch Panel chip selection, low active
DISPLAY SETTING
To use with the Raspberry Pi, you need to install the driver
- Write Raspberry Pi OS image to the TF card by Raspberry Pi Imager which can be downloaded from Raspberry Pi official website.
- Insert the TF card into the Raspberry Pi board. The LCD will display after booting up, and then log in to the Raspberry Pi terminal, (You may need to connect a keyboard and HDMI LCD to Pi for driver installing, or log in remotely with SSH)
- Then open the terminal of Raspberry Pi to install the driver.
git clone https://github.com/waveshare/LCD-show.git-cdLCD-show/
The Raspberry Pi must be connected to the network throughout the process
The screen will work after restart.
Notes:
- Executing apt-get upgrade will cause the LCD to fail to work properly. In this case, you need to edit the config.txt file in the SD card and delete this sentence: dtover-lay=ads7846.
- Using with Raspbian-lite, the command of the driver installation should be:
CONNECTION
Note: Connect the GPIO interface, the Raspberry Pi leads to 40 GPIO pins, and the screen leads to 26 pins, pay attention to the corresponding screen pins and Raspberry Pi pins when connecting.
- Connect the female header of the screen to the pin header of the Raspberry Pi
- Connect a power adapter to the Raspberry Pi to power on.
FAQ
Q: Why can not the LCD be used normally when using the Raspberry Pi image
provided by waveshare?
A: Since the Raspberry Pi image and version are frequently updated, if
you encounter a situation where the LCD cannot be used normally, please
download the latest version of the image provided by us or from the official
website of Raspberry Pi and install the latest driver provided by us.
- 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.
Why can not the LCD be used normally when using the official image provided by the Raspberry Pi?
The LCD must have a driver installed for normal use. For details, please refer to the relevant introduction in the user manual.
What is the operating temperature of the 3.5inch RPi LCD (B)?
Commercial grade (0~70 degrees Celsius).