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ESP32-DevKitC by Espressif systems It is an ESP32 implementation by Sparkfun ▷ Integrated Lithium-Ion Arduino UNO WiFi ▻ Less powerful



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IntroductionHands-OnSupplement aryma terial

ESP 32 Introduction Workshop

How to IoT

Joren SixApril 2017

IntroductionHands-OnSupplement aryma terial

Overview

Introduction

What is the ESP32?

Why is it useful?

Are there alternatives?

How to program the ESP32?

Hands-On

Helpful Knowledge

Getting started

Blink

Hello WiFi

Sending data - UDP or TCP?

Packing data - OSC Protocol

Sending sensor data

Mesh networking

Supplementary material

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Intro - What is the ESP32?

Fig:ESP? ESP? ESP? ESP?ESP32 is a low cost, low

power microcontroller series.

Designed and supported by

Espressif systems.

I

Integrated WiFi

I

Dual core Tensilica

Xtensa LX6

I

Bluetooth Smart

Tranciever

I

Sucessor to the ESP8266

I

Relatively new, about

one year old

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Intro - What is the ESP32?

It is a microcontrollerseries.I

ESP32-CoreBoard or

ESP32-DevKitC by

Espressif systems

I

ESP32-WROOM-32

I

Olimex ESP32-EVB

I

Sparkfun ESP32

Thing I

Many more

IntroductionHands-OnSupplement aryma terial

Intro - What is the ESP32 Thing?

It is an ESP32implementationby Sparkfun.I

Integrated Lithium-Ion

battery charger - charge using micro USB I

Breadboard compatible

I

Large amount of IO

exposed I

Close to the Dev board

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Intro - What is the ESP32 Thing?

IntroductionHands-OnSupplement aryma terial

Intro - Why is it useful?

Fig:ESP32-Thing by SparkfunI

IoT use-cases: sending

sensor data to the internet I

Wearables: small,

battery powered and wireless I

Arduino like applications

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Intro - Are there alternatives?

Fig:ESP 8266I

ESP8266

I

Less powerful

ICheaper

IWiFi connection

unreliable

INo bluetooth

I

Arduino UNO WiFi

I

Less powerful

IMore expensive

ILarger

INo battery plug

I

Many others

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Intro - How to program the ESP32?

Arduino

I

Easy to get started

I

Large community

I

Supported sensors!

ILibraries

I

Very limited 'IDE'

I

No debugging

I

Limited functionalityFig:Arduino logoESP-IDF

I

C/C++ toolchain

I

Hard to setup

I

IDE of your choise

I

JTAG Debugging

I (Free)RTOS I

Full functionality

Micropython

I

Python 3.x

I REPL I

Limited functionality

PlatformIO

I

Aduino like

I

IDE based on Atom

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Hands-On - Helpful Knowledge

I Experience with Arduino environment or cross compiling for microcontrollers I

Reading Serial communication

I

Basic knowledge of git

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Hands-On - Getting started

http://0110.be/posts/ESP32

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Hands-On - Blink

Fig:Blinky blink

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Hands-On - Hello WiFi

Fig:WiFi connection

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Hands-On - Hello WiFi - UDP or TCP?

TCP over IP

I

Order guaranteed

I

Data checked and

potentially resend I

High latency

I

Ideal when you need

guarantees I

Think in streamsUDP over IP

I

Order not guaranteed

I

Data can disappear

I

Low latency

I

Good for real-time data

(audio/video) I

Think in packets

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Hands-On - Hello WiFi - OSC Protocol

OSC Protocol

I

A simple standardized way to pack data

I

Universal support and libraries

I

Originally developed to connect music instruments

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Hands-On - Sending sensor data

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Hands-On - Mesh networking

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Supplementary material

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