This new case is used for the people use 3.5 inch screen : When you use the touchscreen , just remove the cover board and fan; When you don't use the touchscreen , you can use the cover and fan , which become a normal case.
Please note that you can use the 3.5 inch touchscreen and fan at the same time ! ( as the picture )
The touch screen connect to Raspberry Pi by GPIO pin only , please don't use the HDMI interface when you use the touch screen.
Features :
Dual use :
- This case support to install 3.5 inch touchscreen , and need to remove the cover board and fan in this using way. ( You can not install the 3.5 inch screen and fan at the same time )
- When you don't use the 3.5 inch touchscreen , it is a general case with cooling fan.
Full access for Raspberry Pi :
- We leave every hole for SD card , HDMI , AV , Ethernet , USB , POE , Camera , MIPI DSI ports.
Support cooling fan :
- You can install the cooling fan on the cover board , which make the best heat dissipation and extend the using life of Raspberry Pi. ( You can not install the 3.5 inch screen and fan at the same time )
Hange hole on the bottom :
- We make 2 hole on the bottom so that you can hange the case on the wall or something else . This design is very convenient when using the 3.5 inch touchscreen.
- There are Black / Gray / White / Transaperent color to chose for the case .
About the pad - use to support the screen:
- Install the Raspberry Pi on the base board
- Please stick the pad on the back of 3.5 inch touchscreen ( as the picture show ) , then insert the 3.5 inch touchscreen on Raspberry Pi by GPIO pin correctly ( don't be malposed )
- Install the cover board
Note :
Please plug the screen on Raspberry Pi's GPIO pins correctly. If you misplace it , the screen will lose the touch function forever. Make sure the right pin of screen is aligned before powering up.
Package list :
- 1 x LCD with Case
- 1 x 3.5 inch Touchscreen ( not include Raspberry Pi )
- 1 x Touch Pen
- 1 x ABS Case Box for Raspberry Pi 4 Model B
Touch screen calibration:
This LCD can be calibrated using a program called xinput_calibrator
- Install it with the commands lcd LCD-show/sudo dpkg -i -B xinput-calibrator_0.7.5-1_armhf.deb
- Click the Men 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