售后常见问题

Crowpi2 software is recommended to run on a Raspberry Pi 4 Model B with 2GB RAM or higher (preferably with 4GB or 8GB).

The SDA0 (BCM_GPIO-0) pin is reserved for Raspberry Pi startup detection, in order to control the power on/off of the PCBA board. So without this pin signal from the Raspberry Pi, the CrowPi2 will shutdown unexpectedly.

Problem:

I purchased the CrowPi2 - All in One Raspberry Pi Laptop & STEM Learning Platform. I am receiving a system error that I am unable to resolve. The error is no signal. I have tried multiple times different suggestions I have read on forums etc. Please advise on next steps. Thanks for your time.

Solution:

1.Check whether the HDMI signal connection is correct and whether the cable and HDMI adapter board are damaged.

2.Check whether it is an SD card problem:

Replace an SD card or burn another system, such as the Raspberry Pi os or CrowPi2 os, and then see if it can start normally.

3. Check whether there is a problem with the Raspberry Pi:

Uninstall the screws, remove the Raspberry Pi, and connect to a screen instead of the CrowPi2 to see if it can boot normally.

You need to reinstall the LCD library using the following commands:

sudo pip install Adafruit_BBIO

sudo pip3 install Adafruit_BBIO

Pixel Doubling can make fonts more readable (larger) on a small screen with high resolution, however, there are drawbacks

· Pixel Doubling affects the entire system. Enabling pixel doubling simply draws every pixel in the desktop as a 2×2 block of pixels on the screen, making everything exactly twice the size and resulting in a more usable desktop. But this will sacrifice screen quality.

· Will need more fiddling with other appearance settings to suit your own liking.

To enable Pixel Doubling:

1. Click on Menu (Raspberry icon).

2. Select Preferences and choose Raspberry Pi Configuration.

3. The Raspberry Pi Configuration window appears.

4. On the Display tab, click on Pixel Doubling: ( ) Enable.

5. Click OK and reboot the system.

Note: After reboot, everything on the screen becomes very big. You will need to customize the appearance settings as shown below. You may want to experiment with different appearance settings to suit your own liking.

To customize Appearance Settings:

1. Click on Menu (Raspberry icon).

2. Select Preferences and choose Appearance Settings.

3. The Appearance Settings window appears.

4. On the Menu Bar tab, set Size: Medium (24x24).

5. On the System tab, set Font: to PibotoLt 8 and Mouse Cursor: Small.

6. Finally, click OK and that's it.

Note: You may want to experiment with different appearance settings to suit your own liking.

There is a slide switch next to the fan that controls the connection of all the onboard sensors on CrowPi2. When the Crowpi2 software starts, the Switch position must be set on the A-side CONNECT SENSOR (Left).



One is a power light and the other is a connection status light to determine if a connection has been established.

It needs to be reset each time power is applied.

5V.

TDOA's algorithm will include this part of the processing, including multipath effects.