Circuit Cellar Ink 236
March 2010

Table of Contents


CJ Abate

HTML Task Manager

Need-to-Know Info


John Gorsky

HTML New Product News


David Tweed

HTML Test Your EQ


Guido Ottaviani

A Sensor System for Robotics Applications

If you're developing an interactive robotics platform, you'll have to incorporate a well-designed sensor system at some point. This article covers how to add "senses" to a robotics design, from sight to hearing to touch and more.



Brian Millier

RFID-Based Liquid Control

Part 2: Monitoring System Implementation

This article series details how to build an RFID-based controller for monitoring dispensed liquid nitrogen from a tank in a laboratory setting. Here you learn about the circuitry, command structure, and system operation.



Peter Montgomery

Serial Network Hub

Part 1: Network Topology and Design Planning

If you're building a custom multipart animatronics or robotics system, consider adding a serial network hub to run the show. Here you learn why building a six-port RS-485 hub for a custom network packet system can simplify node wiring and more.



Marco Aiello

Design and Program a "Minirobot"

Control capability is at the heart of most robotics applications, particularly when object avoidance is a project requirement. This article details how to build a mobile "minirobot" and implement an autonomous navigation system.



Larry Cicchinelli

Calibrated Decibel Meter Design

You can build your own calibrated decibel meter with a little know-how and four main parts: an audio amplifier, a meter circuit, a display, and a power supply. With this design, you can accurately measure the output level of most audio systems.


From the Bench


Jeff Bachiochi

Sun Tracker

Part 2: Power Up and Start Tracking

The first part of this series detailed a custom time-keeping design called a "sun tracker." Now it's time to power up the tracker, start keeping time, and display the data on an LCD.

Lessons from the Trenches


George Martin

Put C Language to the Test

Part 1: A Sudoku Puzzle-Solving Program

You have a handle on C language. Now it's time to write a complete program from start to finish. How about a program for solving a Sudoku puzzle? Read on to learn how it's done.


Silicon Update


Tom Cantrell

Tales from the Crypto

A Look at Embedded Design Security

The bad guys are out to steal your design, your code, your tools, your customers, and anything else that isn't nailed down. Forget about trust, every designer needs to pay more attention to verification. Fortunately, you can use some silicon to help you keep your secrets safe.


Crossword Puzzle


Advertiser's Index / April Preview


Steve Ciarcia

HTML Priority Interrupt

A Matter of History

Bonus Article


Titus Gabriel Petrut

The Arduino-Based "MiniEric" Robot

The "MiniEric" is a general-purpose robot used for experimentation. It includes an Arduino board and several microcontrollers for the smaller modules. You can build a similar robot to experiment with at your workbench.


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