Elektor.Electronics.Jul.Aug.2007.pdf

www.elektor-electronics.co.uk JULY/AUGUST 2007 £ 5.65

platform voor elektronica

DOUBLE SUMMER ISSUE

Sensors

Actuators

Microcontrollers

Power Supplies & Chargers

Mechanics

Communications

R34

Tips & Tricks

Miscellaneous

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Summer Circuits 2007

Contents

Colophon

Alphanumski Puzzle

140

Elektor SHOP

145

Sneak Preview

148

SENSORS

A/D Converter for Robots

Bat’s Ear

CMUCam1 Vision System

ACTUATORS

CO Sensor

Compass Sensor for Lego Mindstorms NXT

12 V Bidirectional Motor Control

From Cassette Recorder to Robot Propulsion

3 Amp PWM DC Motor Controller*

An Inclinometer for your Robot

Catapult for Robots… or Other Uses

Complete Stepper Motor Driver

Controlling Servos

Driving Higher Power Motors

Driving Stepper Motors

Driving Stepper Motors: KISS

MotoBox*

PIC 12C508 Stepper Motor Controller

PIC Indicator Relay

Robot Footballer

Servo to Motor Conversion

zBot: 10-A Power Stage for DC Motor

IR Close Object Detector

MICROCONTROLLERS

Light Sensing with an LED

Light-seeking Robot

Low 2 Cost USB Demo Board

An Obstacle Detecting Robot

LPC900 Programmer*

Overheat Detector Alarm/Switch

PIC or Basic Stamp IR Telemeter

PIR Sensor

Positioning with Photodiode Arrays

A Robot that won’t lose its bearings

Sensor for Line Following Robots

Simple D/A Converter for Robots

Sound Activated Switch

Stereo Robot Ears*

Ultrasonic Distant Obstacle Detector

Whiskers on Robots

Optimised STK200/300 Programmer

Wireless Pulse Sensor

Propeller Prototyping Board for BoeBot*

CONTENTS

Volume 33

July/August 2007

no. 367

Satnav for Robots

COMMUNICATIONS

Serial Interface for the Propeller*

2.4 GHz Antenna for Robotics Vehicles

110

Servo Control from a PC

IR Communications using a UART

113

‘Teaclipper’ Postage-Stamp Programmer

IR Remote Control with the R8C

115

Which Brain for my Robot?

Radio Remote Control

for PDAs and Smartphones

115

POWER SUPPLIES & CHARGERS

Receiver for RC5 Remote Controls

112

Removed Pulse Detector

114

3-A Wide-input

Adjustable Switching Regulator

Robot Voice

117

zBot: Wireless Link

114

Deep Discharge Protection

for Rechargeable Cells

Dual Battery*

TIPS & TRICKS

Fast Charger for NiMH Batteries*

Balancing Robot

118

LDO Regulator with Soft Start or Tracking

DIY Wheels

120

Lithium Charger*

R8C Measures Negative Voltages

121

Mini Power Inverter

Multi-purpose NiCd & NiMH Charger

MISCELLANEOUS

Chaotic Fireﬂies

126

Clap Controlled Switcher

132

Colour Tamer

126

Football with Robots

138

Formula Flowcode Buggy

122

KiCAD: a high-level tool

134

New Lego Mindstorms NXT Motor Block

133

Philips ME Construction Kits

130

Paralleling LiPo Batteries

PWM Voltage Dropper

Switch-Mode 555 Supply

USB Converter*

Voltage Stabiliser

zBot: Solar/Battery Power Supply

MECHANICS

Antieu-robot

Babybot

100

Bolo

Hunter

104

A Robot with an Elephant’s Memory

131

Minimalist Motor

102

Stepped Volume Control

127

Robot MOPS

107

Walking Works!

128

Torque is Cheap

101

Trembly

104

Tribot

103

* PCB design included

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