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Product: All-in-one Stater Kit for PICO 2 SKU: SEP0005K
Question:
I have serious problems with your device.
I had problems with compilation of you course code programs.
Probably because of wrong Board selection ( Pico 2 ).
Your Wiki manual led me to some older devices IDE installation... it's a
mess.
No video tutorials to make it all easy for very beginners like me.
I was trying different boards because of constant compilers error at
different modules.
I have ended up with bricked device after a successful compilation and
Blink example sending to the device
and using some Pico 2 2040 board type and COM4 port.
And now it looks bricked ! No reaction to anything. No port COM4 visible.
Now I found that is should be some custom HSTX board library but now
device does not react to anything ( except BOOT+RESET to switch to disk
mode ).
This all should be for very beginners but it is NOT !
I am loosing my patience for that !
How to get the previous initial OS and settings back ?
Answer:
Please try uploading the course programs according to the attachment.
In addition, the factory program is shown in the figure below, please download it from the following link:. This factory program also requires you to upload it according to the attachment.
https://github.com/Elecrow-RD/All-in-one_Starter_Kit_for_Pico
Product: LR1302 868M/915M LoRaWAN Hat for RPI SX1302 Long Range Module Support RPI 1 2 3 4 5 Series SKU: CRT01265M
Question:
Hi. I just wanted to know if the same LR1302 raspberry hat can be used for both 868 and 915MHz LoRaWAN Gateway Modules.https://www.elecrow.com/Ir1302-868m915m-lorawan-hat-for-rpi-sx1302-longrange-module-support-rpi-1-2-3-4-5series.html There's a dropdown selector for the "Frequency type" but I'm not sure if that changes something about the hat or it's exactly the same hat for both frequencies.
Answer:
Different drop-down options correspond to different hardware configurations. The frequency band of the LR1302 raspberry hat must be the same as the frequency band of the LoRaWAN Gateway Module to be used together.
Product: All-in-one Starter Common Board Kit for Arduino with 15 Sensors and 21 Lessons SKU: SEA0004T
Question:
Hello. I have received the product for Arduino development. I am looking for the user manual and the examples manual. Without this documentation, it's very difficult to use this kit, which is supposed to teach arduino programming. Is the documentation missing from the package, or do I need to download it online? Thank you in advance for your prompt feedback.
Answer:
Please click on these two links to find the user manual and other related information. In particular, click on the links at the bottom of these two pages to view the relevant documents for the product(as shown in the images below).
https://www.elecrow.com/all-in-one-starter-common-board-kit-for-arduino-with-15-sensors-and-21-lessons.html
https://www.elecrow.com/wiki/All-in-one_Starter_Common_Board_Kit_for_Arduino.html
Product: CrowPanel 7.0" HMI ESP32 Display SKU: DIS08070H
Question:
I am using the CrowPanel 7.0" HMI ESP32 Display (Hardware Version: V3.0) and have tested it with the "CrowPanel_ESP32_7.0_PlatformIO_Project" demo code, which is compatible with PlatformIO. Additionally, I have generated a separate UI code using SquareLine, both of which are working correctly on some boards.
However, we have observed that some boards do not respond to touch, while others function as expected. We are unsure whether this issue is related to hardware or configuration. Could you please advise on troubleshooting steps or potential causes?
Answer:
Regarding the issue you reported, please refer to the code provided in the following link:
Additionally, here is the course link related to this code:
The code is developed using Arduino IDE, but it is the same as the program for the PlatformIO platform—the only difference is the file placement.
Product: Hmi esp32 display series SKU: DIS04028H;DIS08070H;DIS07050H
Question:
Compilation error: demos/lv_demos.h: No such file or directory
Answer:
First, you need to install the lvgl library. There're 2 ways to install it
a. copy the lvgl-3 folder we provided to the Arduino libraries directory. To find the correct directory, you can open Arduino IDE→click Files→click Preferences
b. open Arduino IDE, then open libraries manager and search for lvgl. Select a version we recommended and install. Make sure install the specific version we recommend for the product you use to avoid cause errors when coding
Then, you need to copy the "examples" and "demo" folders to the "lvgl/src" directory. For detail, please refer to: https://docs.lvgl.io/master/integration/framework/arduino.html
Product: SIM7670 4G Module with Mini PCIe Interface, Global/NA/EU Frequency Band Optional-EU SKU: CIR12704M
Question:
We bought a unit of SIM7670 4G Module with Mini PCIE Interface, Global/NA/EU Frequency Band Optional, EU Freq.
But we are having trouble getting it working properly. 1st, it cannot be detected as a USB device on a miniPCIe slot. While we have verified with the Quectel miniPCIe module that the miniPCIe slot is working fine.
Answer:
To resolve this issue, please refer to the following points:
1 First, please confirm whether the USB interface pins of the SIM7670 4G module match those of the Quectel module. The SIM7670 uses pins 36 and 38 for USB communication. If the pin definitions are not consistent, comparing the two modules may not be appropriate, and it doesn't fully rule out the possibility of an issue with the miniPCIe slot. 
2 After powering on the module, you need to first follow the P_PWRKEY pin's power-off sequence to turn off the power, and then follow the P_PWRKEY pin's power-on sequence to turn on the power (please refer to the diagrams and file below). Then, please check again if the USB device is recognized.
Product: Crowview note 14 inch SKU: CRV12014K
Question:
How to remove the battery
Answer:
Regarding the removal of the battery, here are the steps:
1.Remove all screws from the back cover.
Please note that there are two hidden screws underneath the label. Kindly peel off the label carefully to reveal and remove these screws.
2.Once all the screws have been removed, carefully pry open the back cover.
We recommend using a thin, flat tool to gently insert into the gap between the back cover and the main body, and gently work around to open it.
3.After opening the cover, remove the battery.
4.After removing the battery, close the back cover and reinsert all the screws.
Product: All-in-one Starter Kit for Pico 2 SKU: SEP0005K
Question:
I am having difficulty reloading the “All_in_one_Starter_Kit_for_Pico2_SPI_Curriculum_V02_20250114.ino”. It will not compile properly and I have a dark screen on the Touchscreen. Do you have a tutorial that can step me through each Lesson? All of the lessons depend on the Touchscreen, so I am not able to use the Starter Kit as intended. If you can send me a link to the compiled Arduino files that would be most helpful.
Answer:
Please follow this tutorial in the linke below to upload our programs:
https://forum.elecrow.com/discussion/1217/pico-2-starter-kit-how-to-upload-programs#latest
Product: Crowview note 14 inch SKU: CRV12014K
Question:
Crowview note 14" portable monitor with keyboard
I want to inform you that the monitor worked but the keyboard, the touch pad and the speakers didn't work.
I love the product and I want to make it work.
That's why I thought I talk to you before I return it.
I ordered it from Amazon and already tried to troubleshoot it with Amazon agent but they couldn't help. I hope you could help me.
Answer:
To help troubleshoot the issue, please check the following steps:
1 What devices are you connecting to the CrowView Note, and how are they connected? Are you using the bridge kit (if you have one)? Kindly send us some photos showing the setup details.
2 If you're connecting it to a computer:
(1) Please make sure the left USB-A port on the CrowView Note is connected to your computer.
If you connect to the right USB-A port, the keyboard and touchpad of the CrowView Note will not work.
(2) Try a different USB port on the computer.
(3) If possible, try using a different computer.
Product: Crowtail- Smart Pump Shield v2.1 SKU: PSMC18001M
Question:
I have buy a set of elecrow Smart Pump Shield, and now I am facing problem to start the pump shield, when I try to select port, it did not show the port name, seems like my laptop cannot detect it, I am sure the serial port is plugging in correctly.
Answer:
To help you resolve the issue where the board is not being detected by your computer, please follow the steps below:
1. Check the USB cable:
Please make sure you are using a USB data cable, not a charge-only cable. Some USB cables are intended only for charging and do not support data transfer, which will prevent the board from being recognized by your computer.
2. Ensure proper power supply:
When uploading code, make sure the board is connected to your computer via USB and also powered separately using a 12V DC adapter. The 12V power supply is essential for the proper functioning of the board.
3. Select the correct port in Arduino IDE:
After connecting the board to your laptop, open Arduino IDE and go to Tools > Port. Choose the COM port that appears after the board is connected. This is usually labeled as "Arduino Leonardo" or similar. The COM port number may vary depending on your system.
4. Check Device Manager (for Windows users):
Open Device Manager and see if the board is listed under Ports (COM & LPT) as Arduino Leonardo.
– If it is not listed, try restarting your computer, switching USB ports, or using a different computer.
5. Reinstall the driver:
If the board still isn't recognized, you may need to reinstall the driver. You can download the required Arduino Leonardo driver from the official Arduino website:
6. Please follow the official step-by-step guide provided in the Wiki for using this product including uploading the program:
https://www.elecrow.com/wiki/smart-pump-shield.html
If the problem persists after trying these steps, feel free to send us a photo or video of your setup so we can better understand the issue.