I2C Multiplexer Shield Testing
I built an I2C multiplexer shield using an Arduino prototyping shield from SchmartBoard a couple of weeks ago. The shield […]
Reverse Engineering the Syma S107G IR Protocol
I got a Syma S107G IR controlled helicopter for my son a while ago. This tiny remote control helicopter is […]
Code For MCP4821/MCP4822
Microchip‘s MCP4821/MCP4822 is a low budget 12-bit digital-to-analog converter. MCP4821 is the single channel version whereas MCP4822 has two channels […]
Digital Metronome — Revisited
Last year, I wrote about a simple digital metronome project. While the device worked pretty well there are a few […]
Simple Zener Diode Tester
In this post I will show you a simple Zenner diode tester circuit, when coupled with a PWM generator it […]
Arduino Library For MCP342X
Last time, I discussed how to interface TI’s ADS1112 16-bit delta-sigma A/D converter with Arduino. Today I am going to […]
Interfacing ADS1112 With Arduino
ADS1112 is a 16-bit delta-sigma A/D converter. This A/D chip has an I2C interface, a 2.048V internal voltage reference and […]
5A Lab Power Supply With Digital Readout
I got a used 250VA power transformer that was removed from equipment a couple of weeks ago. The transformer has […]
AD7705/AD7706 Library Revisited
About a year ago, I wrote a simple library for interfacing AD7705/AD7706 with Arduino. The library works, but it requires […]
Interfacing LTC6904 With Arduino
LTC6904 is a programmable oscillator which is capable of generating frequencies from 1kHz to 68MHz. The oscillation frequency can be […]
A Self-Balancing Robot – III
In part one, I went over the theory behind the self-balancing robot and in part two, I showed you my […]
A Self-Balancing Robot – II
In my previous post, I explained the theory behind the self-balancing robot at a high level. Here, I will discuss […]
A Self-Balancing Robot – I
Building a self-balancing robot is one of those things that every hobbyist and engineer want to do. But there are […]
So Why I like Arduino
You probably know this already from just reading some of the posts in my blog. Like millions of others, I […]
ATmega328 Fuse Bit Setting for 3.3V Vcc
By default, ATmega328 used in Arduino (such as Uno or Duemilanove) operates under 5.0V. Sometimes though it is necessary to […]