3.5 inch TFT 800x480@60fps

 ⚠️  Deprecated: This page is outdated and may contain inaccurate information. It is kept for reference only.

Overview

3.5 inch HD-TFT Display shield for Raspberry pi 3B/2B/B+ With Keyboards and Remote IR

[update]:This LCD supports raspberry pi 4 computer model b, you only need to modified the config.txt to use this lcd. please refer to 3.5 inch TFT 800x480@60fps#How to use this screen on Pi 4B

Video

Features

Demensions: 85mm×56.5mm;
Resolution: 800 x 480, 3.5 inch;
267ppi High PPI display screen;
11ms High Response Time(more than 60 fps);
160° Wide Viewing Angle;
900:1 High Contrast Ratio;
Sunlight Readable;
Backlight can change;
With 2 keyboards;
With IR function;
With I2C Master;
Without touch
DC 5V, 80~120mA

How to use this screen on Pi 4B

[Update]:You can use this script tool to use this LCD now: https://github.com/geekworm-com/22LCD-script

or download this File:Config.zip, then unzip it, and move it to /boot/

How to use this screen for PI 3B+/3B/2B

We update the user method for the old raspberry pi board such as 3B+/3B/2B etc. Only append the following comment to the end of config.txt file;

We test it on the official Rasdpbian 2018-11-13-raspbian-stretch verson.

#for raspberry pi 3b+/3b/2b+/b+
dtoverlay=dpi18
overscan_left=0
overscan_right=0
overscan_top=0
overscan_bottom=0
framebuffer_width=800
framebuffer_height=480
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=0x6f005
hdmi_timings=480 0 16 16 24 800 0 4 2 2 0 0 0 60 0 32000000 6
display_rotate=3

How to change the backlight, push the button

How to use 2 keys,like gpio

How to use the I2C master(I2C_3)

you can use this module by the following step

step 1. Download the official firmware, then upgrade to the latest kernel

sudo rpi-update

step 2. Config file to enable i2c_3

sudo nano /boot/config.txt

Add the following line:

dtoverlay=i2c-gpio,i2c_gpio_scl=24,i2c_gpio_sda=23framebuffer_height=480

step 3. Make and install the pigpio

git clone https://github.com/joan2937/pigpio
cd pigpio
sudo python setup.py install
sudo make
sudo make install

step 4. install the I2C tools

sudo apt-get install i2c-tools python-smbus

step 5. Config file to /etc/modules

sudo nano /etc/modules

Add the following line:

i2c-bcm2708
i2c-dev

step 6. Config file to /etc/ rc.loacl

sudo nano /etc/ rc.loacl

Add the following line:

raspi-gpio set 23 pu
raspi-gpio set 24 pu

step 7. Save then restart;

How to use the IR function

Description: IR receiver function:

Operating frequency: 38K HZ
Receiving distance: 18-20m
Reception angle: +/- 45 degrees

The infrared transmitter function

Wavelength: 940nm
Transmitting distance: 7-8m

Preparation: Burn into raspbian system;

1. Start the Raspberry Pi, login Raspberry Pi through SSH, the user name: pi, default password: raspberry

2. Update and install lirc software, run the following command:

sudo apt-get update
sudo apt-get install lirc

3. Edit the config.txt, and add configuration. use GPIO PIN 26;

sudo nano /boot/config.txt

Add the following line into the config.txt file:

dtoverlay=lirc-rpi, gpio_in_pin=26

4. Edit LRIC config file to enable infrared function; sudo nano /etc/lirc/hardware.conf

Modify the following lines:

LIRCD_ARGS=”--uinput”
DRIVER=”default”
DEVICE=”/dev/lirc0″
MODULES=”lirc_rpi”

5. Run "sudo reboot" to restart the Raspberry Pi, then run "ls / dev / l *" to view the infrared device is enabled

It's enabled if you can view the above red mark;

6. Record Button

sudo  /etc/init.d/lirc stop
sudo irrecord -n -d /dev/lirc0 ~/lircd.conf

Record your IR remote control Follow the prompts, such as “pause”，“nextsong”，“prevsong”，“stop”，“volumeup”，“volumedown” etc.

then you can get a lircd.conf file; override the old lircd.conf file;

sudo cp ~/lircd.conf /etc/lirc/lircd.conf

7. Startup lirc software;

sudo /etc/init.d/lirc start

8. Run the following command to view & check record result

sudo irw

Then press those record button;

9. You can view those button name to run irsend command;

irsend LIST /home/pi/lircd.conf “”

maybe it's following content:

irsend: 000000000000c837 pause
irsend: 00000000000048b7 nextsong

10. Now you can use the infrared transmitter, recorded before launching the remote control key coding, use that will extend the board as a rotary tool.Launch the command reference command:

irsend SEND_ONCE /home/pi/lircd.confpause
irsend SEND_ONCE /home/pi/lircd.confnextsong
irsend SEND_ONCE /home/pi/lircd.conf KEY_VOLUMEDOWN
irsend SEND_ONCE /home/pi/lircd.conf KEY_VOLUMEUP