Simulating IoT projects in Wokwi | MQTT in ESP32

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In this video, you will learn how to simulate IoT projects in Wokwi. Specifically, we will use MQTT protocol in ESP32 to subscribe and publish data to MQTT broker and all using wokwi simulator. So you can make IoT projects without hardware.

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Video Chapters:
00:00 Intro
00:23 what is wokwi IoT simulator ?
01:30 which boards are available in wokwi ?
01:49 how much wokwi cost ?
02:10 making account in wokwi .
02:25 Hello world example for ESP32 in wokwi.
03:10 Making circuit in wokwi.
04:45 writing code for MQTT in ESP32
09:55 Testing using Nodered mqtt dashboard '

----------------- HOW TO MQTT SERIES -----------------

ESP8266 Publish/subscribe to Cloud | MQTT:

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Please watch: "How to Set Up Wokwi for IoT Simulation in VS Code with PlatformIO"
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The pin numbers iin thw Wokwi ESP32 simulatoir have changed. Pin number D12 does not exist anymore for example.

DavidBarnwelltkdja
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I am unable to understand how and where do we change all the pin numbers
Can you please help me out with this

IshitaBhatia-ho