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.
Electronics
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.
ESP8266: Controlling chained SN74HC595 ICs
The objective of this post is to illustrate how to chain two SN74HC595 ICs and controlling them, using SPI, with the ESP8266.
ESP8266: Connection to SN74HC595 via SPI
The objective of this post is to explain how to transfer data between the ESP8266 and the SN74HC595 using the SPI interface.
ESP8266: Connection to SN74HC595
The objective of this post is to explain how to connect the SN74HC595 8-bit shift register to an ESP8266 to control some LEDs.
Buying cheap electronics at Ebay: Part 2
This post lists some basic components for creating projects that require soldering and explains how to buy them for cheap prices at eBay.
Designing a LED matrix
The objective of this post is to explain how to create a simple LED Matrix using PNP transistors and a ULN2803A integrated circuit, and assuming that only one LED needs to be connected at each time.
Buying cheap electronics at Ebay: Part 1
This post lists some components to create a basic electronics prototyping kit, which can be bought for very low prices at eBay.
Shorting a voltage source conceptual error
This post describes some conceptual errors with voltage sources, that arise from the definition of voltage source and short circuit.
Toggling a LED with Arduino and HC-06
Following the previous post describing the HC-06 module, this one shows how to use it to build a simple program to toggle the debugging LED of an Arduino board, using Bluetooth. This tutorial assumes the use of the HC-06 integrated in the baseboard described in the previous post.