4028 Adafruit

CircuitPython Essentials Created by Kattni Rembor Table of Contents CircuitPython Essentials 5 CircuitPython Pins and Modules 5 CircuitPython Pins 6 import board 6 I2C, SPI, and UART 7 What Are All the Available Names 9 Microcontroller Pin Names 10 CircuitPython Built-In Modules 10 CircuitPython Built-Ins 11 Thing That Are Built In and Work 11 Flow Control 11 Math 11 Tuples, Lists, Arrays, and Dictionaries 12 Classes, Objects and Functions 12 Lambdas 12 Random Numbers 12 CircuitPython Digital In & Out 12 Find the pins 14 Read the Docs 17 CircuitPython Analog In 17 Creating the analog input 18 get voltage Helper 18 Main Loop 18 Changing It Up 19 Wire it up 19 Reading Analog Pin Values 23 CircuitPython Analog Out 24 Creating an analog output 24 Setting the analog output 24 Main Loop 25 Find the pin 25 CircuitPython Audio Out 29 Play a Tone 29 Play a Wave File 31 Wire It Up 33 CircuitPython MP3 Audio 38 CircuitPython PWM 39 PWM with Fixed Frequency 39 Create a PWM Output 41 Main Loop 41 PWM Output with Variable Frequency 41 Wire it up 42 Where s My PWM 48 Adafruit Industries Page 2 of 115