13.3inch PiPad C4
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Overview
This is a 13.3-inch touch all-in-one computer with a built-in Raspberry Pi CM4, which can browse web pages, play small games, etc., 1920 x 1080 HD resolution, with toughened glass capacitive touch panel.
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Features
- 13.3inch IPS screen,1920 x 1080 high resolution.
- Embed Raspberry Pi CM4 as controller, quad-core 64-bit Cortext-A72 [email protected], Dual-band WiFi, Bluetooth5.0.
- Toughened glass capacitive touch panel, 6H hardness, supports up to 10-points touch.
- Embedded ferrite Hi-Fi speaker.
- Embedded Microphone And Speaker.
- 75 x 75mm spacing mounting holes (M4 screw hole).
- Comes with 75° tilt angle stand.
Difference between Magic mirror and Pipad
The only difference between the Magic mirror and the Pipad is that the Magic mirror use a one-way mirror and the Pipad use Toughened Glass.
Write Raspberry Pi OS
- Download the lasted Raspberry Pi OS image from the Rasberry Pi website and write it to an empty micro SD card.
- Create a new txt file under the BOOT directory of the micro SD card and name it SSH.
- Modify config.txt file which is located at BOOT directory, add the following lines to config.txt file.
hdmi_group=2 hdmi_mode=82 hdmi_cvt 1920 1080 60 6 0 0 0
- Save and insert the micro SD card to Raspberry Pi.
- Connect the Magic mirror to network and power on Raspberry Pi.
- After booting, you can access Raspberry Pi via SSH/VNC, or directly connect the keyboard and mouse.
Check the USB Audio Card
- Test the sound output device
aplay -l
- Test the sound input device
arecord -l
USB2.0
To reduce consumption, USB interfaces are disabled in CM4 by default. If you need to use USB ports, please add the following line to config.txt file.
dtoverlay=dwc2,dr_mode=host
Then reboot the CM4. If you use the newest Bullseye image, the USB2.0 is set to OTG mode by default, and it occurs the error in CM4:
config failed, hub doesn't have any ports! (err -19)
To remove the errors, you can remove the line otg_mode=1 from config.txt file and add the line:
dtoverlay=dwc2,dr_mode=host
kepp display lighting all the time
- Modify lightdm.conf
sudo nano /etc/lightdm/lightdm.conf
- Find the line "Xserver-command" below [SeatDefaults] section and change it from
#xserver-command=X
to
xserver-command=X -s 0 -dpms
- -s # – set screen saver not enabled
- dpms turn off power saving management
- Then save and reboot
sudo reboot
RS232
To use the RS232 interface, please modify the config.txt file:
sudo nano /boot/config.txt
Add the following line the file and save
dtoverlay=uart3
RS485
To use the RS485, you need to enable the serial port of PI
sudo raspi-config
Choose Interface Option -> Serial -> No -> Yes, then reboot
Keys description
- 1: Open or Close LCD display. If you don't need the LCD for long time, you can use this button to reduce consumption
- 2: Direction button
- 3: "OK" function
- 4: Open menu and "Return" function