售后常见问题

Run the command killall Crowpi2 in a terminal.

1. Press Ctrl+Alt+T, a new Terminal window appears.

2. At the command prompt, type killall Crowpi2 and press Enter.

Remove the 1.desktop file from the ~/.config/autostart folder.

1. Press Ctrl+Alt+T, a new Terminal window appears.

2. At the command prompt, type mv ~/.config/autostart/1.desktop ~/ and press Enter

pi@Crowpi2-:~ $ mv ~/.config/autostart/1.desktop ~/

Note:

1. If you change your mind later, just move the file back into the ~/.config/autostart folder.

2. You can also launch the software manually from the Taskbar, click menu → Education → CrowPi2

Update: The file folder error has been corrected.

Problem:

l purchased a CrowPi 2 Deluxe kit and am not able to get any of the images available through the Raspberry Pi lmager to work.l have tried several SD cards, including 2 that were working in an existing RPI(l wiped and reimaged).16gb,32gb, 128gb - none of them work. l gets to the point where it says it will reboot in 5 secs and then immediately shuts down.l let it sit to see if it would reboot on sits own but it didnot.When l power it back on - it shows the RPI logo and then shuts down.

Solution:

As shown in the picture, use a Dupont wire to short-circuit SDA0 and GND.

.

The reason for this problem may be that the acquired IP address is already occupied by other devices.

You can try the following steps:

1. Move the mouse to the wifi icon in the upper right corner of the screen to view the IP address of CrowPi2

2. Log in to wifi manager

3. Release the IP address of CrowPi2 just checked

4. Reconnect to wifi for Raspberry Pi to go online

For more information, please refer to https://forum.elecrow.com/discussion/comment/84#Comment_84

New Solution:

Step 1: write *.img file with selected OS to your SD card as you would normally do

Step 2: open config.txt file under /boot directory on the resulting SD card and add the following commands at the end of the file

hdmi_force_hotplug=1

max_usb_current=1

hdmi_group=2

hdmi_mode=87

hdmi_cvt 1920 1080 60 6 0 0 0

hdmi_drive=2

enable_uart=1

gpio=0=op,dl

Step 3: Safely eject SD card, plug it into CrowPi2 and boot

Old Solution:

Step 1: If you use the standard Raspbain image, open the config.txt file under the /boot directory of your TF card, add the following command in the end of the config.txt file(start with a new line)

hdmi_force_hotplug=1

max_usb_current=1

hdmi_group=2

hdmi_mode=87

hdmi_cvt 1920 1080 60 6 0 0 0

hdmi_drive=2

enable_uart=1

Step 2: Open the terminal and type the following command(ensure that CrowPi2 can access the internet)

git clone https://github.com/elecrow-engle/elecrow_crowpi2.git

cd elecrow_crowpi2/GPIO

sudo bash ./start.sh 

Step 3: Type the command below to reboot the system:

sudo reboot

It is alway a good practise to keep a backup of the system SD card in case anything happens; especially, if you are not too familiar with running the Raspberry Pi.

Before you begin, prepare the following items

· 32GB microSD card or larger capacity

· USB microSD card reader

Next, we will use the built-in SD Card Copier app to do the backup or cloning, following the steps below:

1) Insert a new microSD card into the USB card reader.

2) Plug the card reader into one of the available USB ports on the CrowPi2.

3) A Removable medium is inserted dialog box appears.

4) Click Cancel to dismiss it.

5) Click the Menu (Raspberry) button. Navigate to Accessories and choose SD Card Copier.

6) A SD Card Copier window appears.

7) In the Copy From Device: list box, choose the first device /dev/mmcblk0.

8) In the Copy To Device: list box, choose the last device /dev/sdX shown if you have more than 1 USB storage device plugged in.

Caution: Be sure to select the correct device, because the backup process will ERASE ALL DATA previously stored in the selected device.

9) Tick the New Partition UUIDs check box.

10) Click Start and a confirmation dialog box appears.

11) If you are sure, then click Yes to begin the backup process.

12) After the process has completed, click Close to exit the app.

1.Open a new Terminal (Ctrl+Alt+T)

2.Type sudo raspi-config and press Enter to launch the Raspberry Pi Configuration app.

3.Choose the option as highlighted below,

4.When a confirmation dialog box appears, press Enter to return to the top menu.

5.Press Tab twice to choose Finish and press Enter.

6.Choose YES and press Enter when it prompts to reboot.

Note: The latest Raspberry Pi OS image will expand the filesystem automatically at the initial boot.

Yes, you may. To write a new system SD card, follow the steps below

1. Download and flash your desired OS to a new microSD card using the Raspberry Pi Imager. For details, visit the link Install Raspberry Pi OS using Raspberry Pi Imager(https://www.raspberrypi.org/software/).

2. Use a text editor, open the config.txt file under the /boot partition on the new microSD card and add (cut & paste) the following statements to the end of the file

[EDID=RTK_RTK-FHD]

hdmi_force_hotplug=1

hdmi_group=2

hdmi_mode=82

hdmi_drive=2

enable_uart=1

gpio=0=op,dl

[all]

Example of a step-by-step instructions to flash a RetroPie image on the Crowpi2.

1.Insert a new microSD card (32GB or larger) with a USB microUSB card Adapter into a USB port of the CrowPi2.

2.Launch the Raspberry Pi Imager app (Menu > Accessories > Imager).

3.Click CHOOSE OS.

4.From the Operating System list, choose Emulation and game OS.

5.Choose RetroPie

6.Choose the appropriate version for your Raspberry Pi model.

7.Click CHOOSE SD CARD.

8.From the SD Card list, choose your desired SD Card for flashing with the selected image.

9.Review your selected OS and SD Card and then click WRITE.

10.Click YES, when you are ready to start the flashing process.

11.After flashing has completed, click CONTINUE and close the Raspberry Pi Imager app.

12.Next, you will need to edit the config.txt file in the newly flashed RetroPie SD Card before it is suitable for use with the CrowPi2.

13.Unplug the USB microSD Card Adapter with the RetroPie SD Card and then plug it back in for it to be mounted in the system.

14.Open a new Terminal (Ctrl+Alt+T).

15.Edit the config.txt file in the RetroPie SD Card with your favorite text editor (ex. nano). Type

 sudo nano /media/pi/boot/config.txt  and press Enter.

16.Cut and paste the following statements to the end of the file.

[EDID=RTK-RTK_FHD]

hdmi_force_hotplug=1

hdmi_group=2

hdmi_mode=82

hdmi_drive=2

enable_uart=1

gpio=0=op,dl

[all]

17.Press  Ctrl+X, Y and Enter to save the file and exit the editor.

18.Finally, your RetroPie SD Card is now ready for use in the CrowPi2. Shutdown the system, then unplug the power and replace the system SD Card with the RetroPie SD Card.

Since the new release of Raspberry Pi OS from 4th of December 2020, which switches to use the PulseAudio sound server. In some cases, this might affect the audio output settings after the system upgrade.

To correct the problem, see the instructions HERE under the sections of How do I get it? and Updates.

Or follow the steps below:

1.Update your system to the latest version

sudo apt update && sudo apt full-upgrade

(It is safe to just accept the default answer to any questions you are asked during the update procedure.)

2.Install the PulseAudio Bluetooth support

sudo apt purge bluealsa

sudo apt install pulseaudio-module-bluetooth

reboot

3.Swap over the volume and input selector on the taskbar from ALSA to PulseAudio, after your system has restarted.

a) Right-click a blank area on the taskbar and choose Add / Remove Panel Items.

b) Find the plugin labeled Volume Control (ALSA/BT) in the list, select it and click Remove.

c) Click the Add button, find the plugin labeled Volume Control (PulseAudio) and click Add.

d) Use the Up or Down button to move the new Volume Control to your desired position.

e) Click the Close button, to close the Panel Preferences window.

4.Right-click on the Volume Control icon on the taskbar, select Audio Outputs and choose HDMI if it wasn't ticked.

5.Finally, to prevent some applications that are ignoring the effect of the PulseAudio output switcher, which probably caused by an old ALSA configuration file still being on the system. Remove it with the following command in a terminal.

rm ~/.asoundrc

Reference: https://forum.elecrow.com/discussion/463/sudo-password#latest.