SunFounder ESP32 User Manual

SunFounder ESP32 Starter Kit
Code
Note:
• Open the 5.8_turn_the_knob.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.
from machine import ADC, Pin, PWM
import time
pot = ADC(Pin(35, Pin.IN)) # create an ADC object acting on a pin
# Configure the ADC attenuation to 11dB for full range
pot.atten(pot.ATTN_11DB)
# Create a PWM object
led = PWM(Pin(26), freq=1000)
while True:
# Read a raw analog value in the range of 0-4095
value = pot.read()
(continues on next page)
384 Chapter 3. For MicroPython User

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