In this video, we will learn 2 ways to read the state of an input device like a button switch. Firstly, is by using a polling method and secondly, by using interrupts. At the last part, I will demonstrate an example of controlling a DC motor with limit switch…

In this video we will be talking about PWM or Pulse Width Modulation using ESP32. We will learn how to access the PWM frequency and duty cycle to control the speed of DC motor

For more circuit diagram and the source code use, visit my blogpost at:
https…

In this video, we will explore another example application of PWM which is controlling the angle of rotation of servo motor using MicroPython

For more details visit my blog post at:
https://techtotinker.com/2020/09/006-esp32-micropython-how-to-control-servo…

In this video we will learn how to play some familiar melodies in MicroPython. It is similar to Arduino Tone library but a lot more easier in MicroPython.

For circuit diagram and source code, visit my blogs at:
https://techtotinker.blogspot.com/2020/09/007…

In this video we will learn how to use the hardware Timer Interrupts of ESP32 in MicroPython. We will start by learning the basics then we will step further by introducing multithreading or doing multiple task at almost the same time using hardware timer…

In this video, we will learn to create a non-blocking delays in MicroPython which is very similar to millis funtion of Arduino. We will also expand the example creating a multi-threaded task demonstrating a multitasking routine.

For more details, visit my…

In this video, we will learn to connect and use the 0.96 OLED display in MicroPython to ESP32.

For more details, visit my blog post at:
https://techtotinker.blogspot.com/2020/09/esp32-micropython-096-oled-in.html

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In this video we will learn to interface DHT22 Relative Humidity and Temperature sensor breakout board in MicroPython. We will also use an OLED display for displaying the sensor readings.

For source code and circuit diagram, please refer to:
https://tec…

In this video, we will learn how to use the HC-SR04 ultrasonic sensor in MicroPython. Ultrasonic sensor can be use to measure distance or use to sense an object.

For more details, visit my blogs at:
https://techtotinker.blogspot.com/2020/10/012-esp32-micropython…

In this video, we will learn how to use the UART serial of ESP32 in MicroPython.

For more details, visit my blog post at:
https://techtotinker.blogspot.com/2020/10/013-esp32-micropython-uart-serial-in.html?m=1

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In this video, we will learn how to interface SIM800L gsm module to ESP32 with MicroPython.

For more details, be sure to checkout my blog post at:
https://techtotinker.blogspot.com/2020/10/014-esp32-micropython-sim800l-gsm.html

Check this tutorials using…

In this video we will learn how to create a web server hosted in ESP32 using MicroPython language for controlling the state of a gpio pin. 

This knowledge can be use for controlling a relay which is popular in home automation projects. For the sake of simplicity…

In previous video, we learned to create a web server on ESP32 acting as a wifi station mode. Now in this video, we will learn another wifi mode which is an Access Point mode.


In Access Point mode, you dont need a router. ESP32 will act as the Access Point…

In this video we will learn to create a web server hosted on ESP32 and display DHT measurement readings on it. We will use AJAX to automatically update the sensor values without refreshing the whole web page.

For more details, you may visit my blogs at:…

In this video, we will use our previous knowledge of using DHT sensor discussed in tutorial 11. In tutorial 16 and tutorial 17, we learned to display DHT measurements on a webpage through a web server hosted on esp32. This time, we will use the Thingspeak.com IoT…

In the previous video, we learned to use a RESTful APIs for updating DHT sensor values to Thingspeak server. Data is sent using HTTP POST method. Now in this video, we will do the opposite, that is to request for a  data from a server using the HTTP GET method.…

In this video, we will learn a more complete usage of RESTful APIs which is bidirectional communication with the server that is both sending and requesting of data.

In tutorial 18, I demonstrate sending of data to Thingspeak server using the HTTP POST method while in…

In this video, we will learn to create a basic setup of MQTT system using the ThingSpeak server and an ESP32 using MicroPython language.

We will be using the esp32 to send dht sensor data to Thingspeak server using MQTT Protocol.

For more details, visit…

In the previous video, I demonstrate the use of MQTT protocol by sending DHT sensor readings to Thingspeak as MQTT broker while the ESP32 serves as MQTT client. The act of MQTT client sending data to MQTT broker is called MQTT publish. 

Now in this video…