Embedded Systems Design

ESP8266 - Webserver

ESP8266 Flavors

ESP-01

12-E NodeMCU

WeMos D1 Mini

What can you do with this ?

What can you do with this ?

STA Mode

AP Mode

WiFi Modes

Station Mode

```
Creates its WiFi Network
```

```
Connects to an existing Network
```

Access Point

SSID: Kitchen Timer IoT #

(no password)

Pinout

Connection Example

Connect your module and find your Network...

Exchange Data

```
Webservers/Webpages
```

```
UDP/TCP comms
```

What is a Webserver ?

Webpage

http://192.168.4.1

Block Diagram

192.168.4.1

Kitchen Timer IoT #

Webpage

Serial Communication

9600 Baudrate

Serial Commands List

$SET,TMRS,mm:ss\n

$STR\n

$STP\n

$INC\n

$GET

$mm:ss\n

Mapping

$STR\n

$STP\n

$INC\n

$SET,TMRS,mm:ss\n

$GET

```
It is sent every 1 second
```

Your Task...

Implement the code that will parse these two commands.

When the start button is pressed, turn on an LED

When the stop button is pressed, turn off the LED

ESP8266 Webserver

By Goncalo Martins

ESP8266 Webserver

ESP8266 Webserver explanation

53

Goncalo Martins

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