Ball bearing sizes
Table showing the different sizes of commercially available ball bearings, useful when creating mechanical projects.
Video camera modification to see IR light
How to modify an ordinary video camera to increase the spectrum of the light it can see, allowing the visualization of near-infrared.
Using GPS modules with microcontrollers
How to get the position from a GPS module, by parsing the NMEA strings.
Using a cellphone or GSM/GPRS modem with a microcontroller
How to use a cellphone or a modem to send and receive texts and SMS using a microcontroller.
Matrix keyboards, microcontroller interface
Easy tips to route multiple tact switches disposed in a matrix configuration.
List of software commonly used in electronics
Analysis of some electronic programs I used or use daily.
Introduction to SDL2, developing a pixel font editor
Small tutorial to learn the basics of SDL2, using C++.
Introduction to PIC microcontrollers
Small introductory article about 8 bit microcontrollers, focusing on Microchip PIC16 family.
Introduction to I2C protocol, reading and writing in 24LC memories
Very useful memories, typically used to store configuration data or to keep logs with sensor data.
Introduction to GLSL Shaders
A small article that can help people that want to get into the world of graphic shaders development.
Introducción to MEMS (micromechanical systems)
Spanish presentation: examples of application and materials used for construction of MEMS.
Input/output port expansion
How to add more digital inputs or outputs to a microcontroller, using shift registers.
Homemade inclination sensors
How to build small sensors with two states, that can sense the rotation of a board in two axes.
Graphical LCDs based on KS0108
How to control a Graphic LCD with a resolution of 128x64 (or 192x64) based in KS0108, using a microcontroller and two 8 bit I/O ports.
External RAM memories in MCS51 architecture (8051/8052)
How to connect and use an external memory, using data and address multiplexing.
Analog to digital converter without ADC
How to easily measure the value of a resistor, using a microcontroller without Analog to Digital converters.
Alphanumeric LCDs based on HD44780
How to control an Alphanumeric LCD using a microcontroller. Includes commands and schematics.
Usage of MAX232 for RS232-TTL level shifting
A simple circuit used in almost every circuit that needs a connection with a PC.
Introduction to PLD (Programmable Logic Devices)
Small summary of applications of PLA, PAL, GAL and PLD based systems.