SunFounder ESP32 User Manual

SunFounder ESP32 Starter Kit
Code
Note:
• Open the 2.2_fading_led.py file located in the esp32-starter-kit-main\micropython\codes path, or
copy and paste the code into Thonny. Then, click “Run Current Script” or press F5 to execute it.
• Make sure to select the “MicroPython (ESP32).COMxx” interpreter in the bottom right corner.
# Import the necessary libraries
from machine import Pin, PWM
import time
# Create a PWM object
led = PWM(Pin(26), freq=1000)
while True:
# Gradually increase brightness
for duty_cycle in range(0, 1024, 1):
led.duty(duty_cycle)
time.sleep(0.01)
# Gradually decrease brightness
(continues on next page)
3.8. 2.2 Fading LED 313

SunFounder ESP32 Specifications

General

Microcontroller	ESP32
Clock Speed	Up to 240MHz
Flash Memory	4MB
SRAM	520KB
Wi-Fi	802.11 b/g/n
GPIO Pins	36
ADC	12-bit
PWM Channels	16
Operating Voltage	3.3V
DC Current per I/O Pin	40mA
USB	Micro USB
Bluetooth	Bluetooth 4.2 BR/EDR and BLE
Analog Input Pins	18
DAC Pins	2
CPU	Xtensa dual-core 32-bit LX6