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Category Archives: Arduino

Turn your Arduino board into a digital multimeter with this shield

Posted on April 22, 2014 by R-B One comment

Here is an instructable that describes a DIY shield which would convert your Arduino board into a multifunctional digital multimeter. This shield can be used with “Arduino” UNO und Duemilanove boards, and can display the measurements on a 16X2 character LCD and/or on the serial monitor window on PC. This digital multimeter Arduino shield has the following features: voltmeter ranges : 0-10V; 0-30V; 0-100V ampmeter range : 0-500mA ohmmeter ranges : 0-1KOhm, 0-250KOhm diode, LED, continuity tester LED functionality tester transistor Beta meter

Arduino basic I/O learning shield

Posted on April 16, 2014 by R-B Leave a comment

Jesus Echavarria, an electronic designer from Spain, has informed us about his K4S Keyboard project, which is a basic I/O shield specially designed for learning Arduino Programming using the Scratch for Arduino (S4A) platform. S4A is a modified version of the MIT’s Scratch Project and supports interactive Arduino programming through drag and place blocks. The design of K4S board is simple and contains three 10mm LEDs, three tact switches, one potentiometer, and one Piezo buzzer. It can be used for educating kids the basics of Arduino programming using S4A. Experiments that can be done with this shield include basic digital input and

PWM generator and servo tester using ATtiny45

Posted on April 16, 2014 by R-B Leave a comment

This easy-to-build PWM generator project uses the ATtiny45 processor and can be used as a tester for servos. It operates at 5V and can drive maximum PWM load of 1A.

Arduino vocal effects generator

Posted on April 7, 2014 by R-B Leave a comment

This Arduino-powered vocal effects generator box shifts and distorts incoming audio signals to produce a wide variety of vocal effects. It samples an incoming audio signal from a microphone at 40KHz sampling rate, digitally process the audio, and finally outputs it as an 8-bit audio at 40KHz.

Step-by-step guide for making a very simple temperature and humidity meter with 7-segment LED displays

Posted on April 5, 2014 by R-B 5 comments

In this blog post, I am providing you step by step instructions to build a very simple temperature and relative humidity meter for indoor use. All you need to build this project are an Arduino Uno or compatible board, a DHT11 sensor, and a MAX7219 based 8-digit serial 7-segment LED display. The temperature is displayed in degree Celsius and relative humidity in percentage.

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