售后常见问题

You can use CR1220

CR: Lithium battery

12: Diameter 12mm

20: Thickness 2.0mm

The TFT_eSPI library doesn't support our 7" boards for now, so we need to rewrite the code, but the good news is that most of the function names and the usage of the TFT_eSPI library are the same as the lovyanGFX library, so it doesn't need to be modified much.

First, you need to put the driver configuration code for the lovyanGFX library in the project directory (code link:

https://github.com/Elecrow-RD/CrowPanel-ESP32-Display-Course-File/blob/main/CrowPanel_ESP32_Tutorial/Code/V2.X/Lesson%206%20Design%20UI%20with%20Squareline%20Studio/4.3-5-7inch/CrowPanel_ESP32_LVGL_Demo/gfx_conf.h）

Next, change the macros in gfx_conf.h to the ones used in 7“

Then, go back to the code you wrote and remove the function that declares the TFT_eSPI entity, e.g.:

TFT_eSPI lcd = TFT_eSPI(); /* TFT entity */

Finally, since I declared the entity of the LGFX to be tft, you need to change all entities named ‘lcd’ to tft [image] from:[image] to:[image] or you can just change the entities named ”lcd" to tft [image] from:[image] to:[image] or you can just change them to tft [image] in the code you wrote. All the entities named "lcd" in your code should be changed to tft[image]from:[image]to:[image]

Or you can just change "LGFX tft" to "LGFX lcd" in gfx_conf.h file, you don't need to change so many "LGFX lcd" in gfx_conf.h file, you don't need to change so many "LGFX lcd". or you can just change “LGFX tft” to “LGFX lcd” in the gfx_conf.h file, then you don't need to modify so many "lcd.

It is a design limitation and normal for the Low Voltage Warning message appearing while powering the CrowPi2 through the microUSB power port.

We designed the (+) and (-) buttons to be used to adjust the screen brightness only. Too many ways to adjust the volume may be confusing to users, so adjusting the volume through the system or applications is considered a better way.

The latest CrowPi2 User Manual has been updated accordingly.

The internal dimensions of the storage tray are

· 147 x 78 x 9.5 mm

· 5.79 x 3.07 x 0.37 inches

The Power Bank specifications are:

Model LeTV LeUPB-501T

Capacity 5000/5090mAh, 19.25/19.59Wh (MIN/TYP)

Input 5V-3A, 9V-1.9A, 12V-1.5A (MAX)

Output 5V-3A, 9V-2.3A, 12V-1.6A (MAX)

Dimensions 146.5 x 70.5 x 8.3 mm

Weight 131g

Quick Charge Standard PD3.0, QC3.0

Step 1: Pair the mouse

1. First, power off both the keyboard, the mouse and uplug the wireless receiver.

2. Then, power on the mouse only, and plugin the receiver to CrowPi2 quickly.

3.  Slide the mouse around until you can control the cursor on CrowPi2.

4. Once you can control the cursor on CrowPi2 with the mouse, it means you have successfully paired the mouse.

Step 2: Pair the keyboard

1. Unplug the wireless receiver.

2. Power off both the keyboard and the mouse.

3. Plugin the receiver to CrowPi2, power on the keyboard and you will see the red light comes on. While the red light still on, press the Esc + Q keys at the same time immediately; Then, you will see the red light starts blinking.

4. Move the keyboard close to the wireless receiver, once the blue light and red light turns on at the same time, it means you have successfully paired the keyboard.

5. You have successfully paired the keyboard and the mouse.

Now, you can power on the keyboard and mouse, and use them normally.

Are you using the product from this link (https://www.elecrow.com/crowpanel-advance-4-3-hmi-esp32-800x480-ai-display-ips-touch-artificial-intelligent-screen.html)? If yes, please download the file you need from the link below:

https://github.com/Elecrow-RD/CrowPanel-Advance-4.3-HMI-ESP32-S3-AI-Powered-IPS-Touch-Screen-800x480

The codes for 7-inch and 5-inch products are different and cannot be mixed. Please refer to the example/demo code on our wiki website (https://www.elecrow.com/pub/wiki/) for the specific differences.

You can search the product name on the wiki website to find the corresponding information/code for each product.



1. The difference between the two versions of hardware(version 1.2 and version 1.0) is that the new version supports brightness adjustment.

2. We have put the factory program of the new version on github, the link is as follows:

     https://github.com/Elecrow-RD/CrowPanel-Advance-7-HMI-ESP32-S3-AI-Powered-IPS-Touch-Screen-800x480/tree/master/example/Advance_7.0_test_factory_V1_2

    3. Currently our course programs are suitable for the old version of hardware. The course programs for the new version of hardware need to be modified according to this factory program, and we will update them later.