Brief introduction to the ESP32, a microcontroller from Espressif.
ESP8266: Interfacing with a 4×4 Matrix Keypad
The objective of this post is to explain how to use a 4x4 matrix keypad with the ESP8266. For simplicity, we will assume the use of the ESP8266 integrated in a NodeMCU board. Introduction The objective of this post is to explain how to use a 4x4 matrix keypad with the ESP8266. For simplicity, we …
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ESP8266: Controlling a relay
How to use the ESP8266 to control a relay.
Linkit Smart Duo: Blinking a LED with Python
The objective of this post is to explain how to interface with the Linkit Smart Duo hardware from Python to blink the LED of the board. Introduction The objective of this post is to explain how to interface with the Linkit Smart Duo hardware from Python to blink the LED of the board. To do …
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Linkit Smart Duo: Python support
The objective of this post is to explain how to use Python in the Linkit Smart Duo Operating System. Introduction As explained in a previous post, we can use the Python programming language to develop applications for the Linkit Smart Duo board. This tutorial will focus on explaining the basics of using Python in the …
ESP8266 Webserver: Getting query parameters
The objective of this post is to explain how to access query parameters passed in HTTP requests sent to a web server deployed in the ESP8266. Introduction The objective of this post is to explain how to access query parameters passed in HTTP requests sent to a web server deployed in the ESP8266. Query parameters …
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ESP8266: Controlling a LED matrix with the 74HC595 ICs
The objective of this post is to explain how to control the LEDs of a LED matrix using 2 74HC595 ICs and a ESP8266 microcontroller. Introduction The objective of this post is to explain how we can control a LED matrix using 2 74HC595 ICs and a ESP8266. With this method, we will only …
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ESP8266: Controlling a DC motor
How to control a DC motor, including its speed, using an ESP8266 and an ULN2803A integrated circuit.
ESP8266: Controlling a motor with the ULN2803A
The objective of this post is to explain how to control a motor, including its speed, using an ESP8266 and an ULN2803A integrated circuit. Hardware Since the digital pins of a microcontroller can only source a limited amount of current (in the case of the ESP8266, 12 mA maximum [1]), we can't directly use them …
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ESP8266: Using the PWM technique
How to use the Pulse Width Modulation (PWM) technique with the ESP8266
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