I am afriad that it can not be changed. 

Have you followed this instructions:  https://www.unihiker.com/wiki/GettingStarted/gettingstarted_mindplus/

Hope it helps. 

which product? 

For your setup with the NEMA 23 stepper motor and the DM542T driver, here are the key points to clarify:

1. **Peak Current vs. RMS Current:**
  - **Peak Current (2.84A):** This is the maximum current the driver will supply to the motor during operation.
  - **RMS Current (~2A):** This is the continuous current that the motor will effectively use over time, calculated as the peak current multiplied by 0.707 (RMS factor for a sine wave).

  When setting up your DM542T driver, **you should set it to the peak current** (2.84A) to match your motor’s 2.8A/phase rating. The driver will handle the RMS conversion internally.

 2. **Bipolar Motor Amperage:**
  - The **2.8A/phase rating** of your motor is per phase, and since it’s a bipolar motor, you **do not need to double the current**. The driver will handle both phases independently, so you set it to 2.84A (close to 2.8A) to match the motor’s specifications.

3. **Power Supply:**
  - Your 36V, 5.9A power supply is sufficient for this setup. The total current draw of the motor (2.8A/phase × 2 phases = 5.6A) is within the power supply’s 5.9A limit.

Summary:
  - Set the DM542T driver to **2.84A (peak current)**.  
  - No need to double the amperage for a bipolar motor.  
  - Your 36V, 5.9A power supply is adequate for the motor and driver.  

Let me know if you have further questions!

您好，Hank：@@这些电路板与原装 Arduino 几个。请访问 www.Arduino.cc 获取硬件参考或引脚定义。@@ 对于产品，我们正在开发 wiki 部分，https://wiki.dfrobot.com/感谢您从我们这里购买。

Your pictures show that you are using esp32 s3, but atmega 328, the pins are totally different with UNO r3 and esp32 s3.  You'd better to check out your wifi board documents.   Link your esp32 serial pin will help. 

  “if (uart_is_readable_within_us(uart0, 50000)) ”  wondering if “50000” is the baudrate of uart?  if it is, please set to 9600 baudrate.  

Continuous rotation does not have a position sensor, which is not able to do positioning.  If you need position control, you can add one rotation sensor on your own. 

check this out：https://wiki.dfrobot.com/SKU_EDU0157_EN_Lark_Weather_Station#target_5 

Connect the Lark to the computer, open the USB drive that pops up on the computer, and open Config.txt. Change the first line from I2C to UART, Both uppercase and lowercase UART are acceptable.

Glad to see it has been sovled.

Other possibilities could be conner error, specular reflection and triangle error.   

You sure it is DFRduino Uno V4 or Arduino Uno R4?  Usually, you can plug and unplug the cable to solve the problem.  If not , try another usb port.  And if you are using Mac,  you may need to be careful about the Type-C to usb converter.  Some brand may cause uploading problem. 

try to point the sensor to the sky or ceiling.  

which sku are you talking about, if it is tel0124,  it then should be able to use as a shield.  Check the wiki here: https://wiki.dfrobot.com/SIM7600G_H_LTE_Shield_V1.0_SKU_TEL0124

what is kidsiot?  

can you plot the data,  I suspect that you missed some data. 

Yes. You can try,  no harm to the board.    You won't break it.  

Yep.  Serial logger allows user to store data by serial.print method and data can be retrived from stored file via USB. 

Yes.