Install library from github:
Librarys:NeoPixel_Bus from Makuna
Download libraries and put it in the libraries folder in the installation directory of the Arduino IDE
Install Library by Manage Libraries:
Open Arduino IDE
Click 'file'→'Example'→'NeoPixel Bus'→'simple' to open the example
We need to change some code,Find the code below in the code
const uint16_t PixelCount = 4; // this example assumes 4 pixels, making it smaller will cause a failure
const uint8_t PixelPin = 2; // make sure to set this to the correct pin, ignored for Esp8266
Change to
const uint16_t PixelCount = 25; // this example assumes 4 pixels, making it smaller will cause a failure
const uint8_t PixelPin = 4; // make sure to set this to the correct pin, ignored for Esp8266
Then add the following code to void setup()
#define LED_POWER 2
pinMode(LED_POWER, OUTPUT);
digitalWrite(LED_POWER, HIGH);
Compile this program
And download it(Set the serial port and board)