Content for Arduino

Prototype 14-segment-display shield

“There are many ways (*) to drive the 6-digit 14-segment common cathode display from Seeed Studio. This time I chose to multiplex two MAX7221, a method described here (but used for driving a bi-color 8x8 LED matrix).”

Using 433MHz Remote Controlled Switches on Arduino

“I guess everybody knows those remote controlled switches that in their simplest form come in a couple (mostly 3) of switcheable devices to plug into the mains outlet and that will receive a plug of a lamp or something and …

Arduino Relay connectivity

“The circuit below is used to connect a relay to the arduino UNO to control high voltage electronics.”

Bulls and cows game with arduino

“Also known as Cows and Bulls or Pigs and Bulls or Bulls and Cleots) is an old code-breaking mind or paper and pencil game for two or more players, predating the similar commercially marketed board game Mastermind. It is a …

Clock with thermometer using Arduino, i2c 16x2 lcd, DS1307 RTC and DHT11 sensor.

“Hello! It’s been a while I’ve didn’t posted anything on Instructables, but now I made a simple project that I’ve seen on internet in various forms. I managed to build a code using other codes I …

EWaste 60$ 3DPrinter

“This project describes the design of a very low budget 3D Printer that is mainly built out of recycled electronic components. The result is a small format printer for less than 100$. First of all, we learn how a generic …

Half-Inch LED Cube: Arduino controlled 3x3x3 with SMD LEDs

“Taking on the task started with me thinking ‘Hey, I could make a smaller LED cube using SMD LEDs”. Yes, the idea was to solder the surface mount LEDs in space! And yes I did it (the “Why” question remains …

High Tech - Low Buck Digital Torque Meter

“Industrial torque meters cost a lot ($4500). I’ll show you how to build a low buck version with an Arduino. Why? Because I want to test power tools to see if the actual specs live up to the marketing …

Introducing the BusinessCarduino, worlds most versatile business card?

“At Interactive Objects, we needed a new business card. Business cards have been the method of leaving a token for keeping in touch. Despite all the prophets declaring it dead every decade with vCards, Bumps, etc., the traditional, physical business …

Program an ATtiny44/45/84/85 with Arduino

“This tutorial gives provides the steps to set up, program, and test an ATtiny44/45/84/85 with an Arduino. It is also provides some explanations as to the inner workings of AVR chips in general.”