RPI Display
- new wiki page: https://w2.electrodragon.com/board-series-dat/RPI-LCD/RPI-LCD-dat.md
- More debug info please see RPI Debug
SPI GPIO LCD
1.8 SPI LCD
Alternative Method GPIO LCD
- Use latest system
- sudo nano /boot/config.txt -> add ->
dtparam=i2c_arm=on,spi=on dtoverlay=pitft28-resistive, rotate=270 speed=48000000 fps=30
- Make debug monitor on screen -> sudo nano /boot/cmdline.txt before“rootwait” -> add -> fbcon=map:10 fbcon=font:VGA8x8
Enter into graphic system
- sudo nano ~/.profile -> add -> export FRAMEBUFFER=/dev/fb1
- raspi-config -> Enable Boot to Desktop/Scratch” -> ”Desktop log in as user ‘pi’ at the graphical desktop
Schematic
1.44 RPI LCD
1.8 RPI LCD
3.2 inch and 3.5 SPI LCD with touch, interface
RPI2VGA SCH
HDMI
Vendor GoodDisplay
- Github - https://github.com/goodtft/LCD-show
- For latest RPI image, HDMI display work directly, you can choose install for touch function or not.
- Installation
for 5 -> sudo ./LCD5-show
- important, if display blink, make sure USB power is enough, otherwise attach usb power to display too
- make sure no other pins used touch screen GPIOs
Note
- change back to traditional LCD -> sudo ./LCD-hdmi
DPI - LCD
VGA
- Copy the file bin to system root folder File:Dt-blob-1.zip
- Edit config.txt file and add
enable_dpi_lcd=1 display_default_lcd=1
- Change DPI resolution by following commands, following is 1080p@60, more info please see http://elinux.org/RPi_Configuration at HDMI mode section
dpi_group=2 dpi_mode=82
- or 1366×768@60
dpi_group=2 dpi_mode=86
- If use 3B, please use latest raspbian system, and add following two times to turn off uart and bluetooth.
#disable the bluetooth only for pi3 dtparam=uart1=off dtoverlay=pi3-disable-bt-overlay
Debug
- Also turn off SPI, IIC, Serial, 1-wire, remote IO in raspi-config in case
- Plug VGA before power up.
E-Paper
- Side pins for arduino, not soldered
- Freeze screen when lose power
- Very simple demo from arduino, not continue show..