Electronics on Karpoke - Just Another Blog

Diode: una excelente herramienta educativa para simular montajes realistas de electrónica desde el navegador

Fri, 12 Jun 2026 15:49:05 +0100

Componentes básicos a la izquierda, botón de Simulación a la derecha: así se aprende electrónica

Wokwi: Simulador de Arduino y ESP32 para tus proyectos electrónicos

Sat, 15 Jul 2023 14:45:34 +0100

Afortunadamente, el acceso al hardware Arduino, sus clones principales, y otras alternativas como el ESP8266 y el ESP32 sigue siendo excelente. Cualquiera puede hacer experimentos de electrónica con facilidad, pero hay ocasiones en las que el proceso de envío termina clavando…

» neoteo.com | neoteo.com

Equilibro de una bola de bolos sobre un rodillo cilíndrico en movimiento

Sun, 11 Apr 2021 15:18:40 +0100

Aunque parezca complicado –que lo es– este mecanismo electrónico mantiene en equilibro una bola de bowling convencional sobre un soporte cilíndrico al que está conectado un motor. El primer arranque es lo más complicado, pero luego la cosa es cuestión de…

» @Alvy | microsiervos.com

TRS Drawbot

Sat, 24 May 2014 15:02:00 +0100

On a standard headphone plug, the left channel comes through the outer ”tip” contact, the right channel through the middle ”ring” contact, and the ground connection through the inner ”sleeve” contact. The acronym for these so-called ”tip-ring-sleeve” connectors is where TRS Drawbot gets its name. It has no microchips or circuit boards and uses free software to turn line graphics into sound files that make almost any audio device into an on-the-go robot controller.

Cómo trabajar con vhdl usando software libre

Sat, 15 Dec 2012 19:25:00 +0100

Las clases de ingeniería electrónica suelen dictarse usando herramientas propietarias, así que siempre paso algunas horas buscando hacer mis trabajos con software libre. Por esta razón, he decidido compartir la siguiente guía.

» pandacris | usemoslinux.blogspot.com

Hacking my vagina

Sat, 15 Dec 2012 16:06:00 +0100

This project has been an astonishing little journey. Many of my previous projects were characterized by an amazing outpouring of effort to build something highly intricate and ultimately invisible. This is the opposite kind of project. A little bit of work and a little custom design to create something new and exciting that I can immediately use in my everyday life. It also happens to be a sex toy. In other words, I wanted to hack something I actually use: my vagina.

Using Bipolar Transistors As Switches

Thu, 02 Aug 2012 12:41:00 +0100

While transistors have many uses, one of the less known uses by amateurs is the ability for bipolar transistors to turn things on and off. While there are limitations as to what we can switch on and off, transistor switches offer lower cost and substantial reliability over conventional mechanical relays. In this article, we will review the basic principles for transistor switches using common bipolar transistors.

The most commonly used transistor switch is the PNP variety shown in Figure 1. The secret to making a transistor switch work properly is to get the transistor in a saturation state. For this to happen we need to know the maximum load current for the device to be turned on and the minimum HFE of the transistor.

The 8 Queens Problem with Arduino and Adafruit 8x8 Matrix display

Thu, 21 Jun 2012 03:47:00 +0100

Using an Arduino and an 8x8 matrix display from Adafruit (with I2C backpack), we display all the solutions to the classic 8-Queens problem (see http://en.wikipedia.org/wiki/Eight_queens_puzzle )

A solution to the 8 Queen problem is where 8 queens are placed on a chess board so that no queen can take any other queen.

» @stormingrobots | youtube.com

Code vs. power consumption

Sat, 16 Jun 2012 18:49:00 +0100

I’ve been wondering for some time whether the power consumption of an ATmega varies depending on the code it is running. Obviously, sleep modes and clock rate changes have a major impact – but how about plain loops?

» jeelabs.org