3-AMP Microstepping Driver Kit
Are you thinking of a cool project that uses stepper motors? A Robot? A CNC Router? A computer controlled Plasma Cutter? An Engraving Machine? A Motorized Telescope? A Desktop CNC Milling Machine?
Then you need this powerful stepper motor driver! This driver uses the SLA7062M IC which combines low-power CMOS logic with high-current, high voltage power FET outputs to deliver a whopping 3 Amps of motor current. The SLA7062M is part of the SLA706xM series from Allegro/Sanken. SLA7062M DATA SHEET

This drive will deliver the power you need, but how about precision? Well, this happens to be a Microstepping Drive! You can select from half-step, quarter-step, eighth-step and even sixteenth-step modes. Combine a 200-step-per-revolution motor with the sixteenth-step mode and you'll get an amazing 3200 steps per revolution. That's 0.1125 angular degrees per step!

There's more: This drive works with UNIPOLAR (6-wire & 8-wire) motors. Unipolar motors typically are more plentiful and lower cost than bipolar motors, so you can save money on your project. In the past, unipolar drives required large dropping resistors that ran really HOT. Not any more! This drive uses PWM (pulse-width modulation) to deliver maximum power to your stepper motor with NO DROPPING RESISTORS.

Here's another feature of this wonderful drive that you shouldn't do without (especially for CNC machine builders): Idle Power Reduction. This means that as long as the motor is in motion, the drive delivers the full power that you have set. But if the motor is stopped for more than 2-seconds it automatically switches to half power. Or you can disable the Idle Power Reduction and run constantly at full power.

The drive accepts simple STEP & DIRECTION signals. The input signals are fully opto-isolated and the drive can be easily connected to the parallel printer port of your computer. The drive will work with any DC voltage from 10V to 44V DC.

In addition to offering the complete unipolar microstepping driver kit (ALL parts are included in the kit - there is nothing more to buy).
24K001 $69.00

LCD MINI MESSAGE BOARD
Miniature message board with 16 character 1 line LCD display message scrolls from right to left with adjustable speed applications: at exhibitions, for advertising, to greet visitors at the front door, as name tag, ...46 character message memory possibility to add pauses during scrolling . Specifications: Power supply: 2 AAA battery (not incl.)
Dimensions: 3.9" x 1.5" x 1.3"  DATA SHEET
MK157 $24.95

LCD MINI MESSAGE BOARD WITH BACKLIGHT AND ENCLOSURE
Miniature message board with 16 character 1 line backlit LCD display 124-character EPROM message memory message scrolls with adjustable speed built-in message editor built-in RS232 interface for easy message uploading and displaying free interfacing software available. DATA SHEET
Applications: At exhibitions, for advertising, to greet visitors at the front door, as name tag, as serial controlled display in equipment, ...
Specifications:
power supply: 9VDC / 100mA
dimensions: 4.5" x 1.7" x 3.0"
- RS232 interface software for easy message uploading and displaying. MK158.zip

MK158 $32.95

Scrolling Message Sign
Build this customizable sign with scrolling LED message. It is completely programmable to say what you want! The message can be changed "on the fly" using the 3 onboard control buttons. To change to a different message, simply use the buttons on the front of the sign.

It is a definite eye-catching device in many occasions. This customizable sign with scrolling LED messages is completely programmable to display what you want whether it is for fun or professional use with the micro LED technology! There are literally hundreds of uses for the sign. It is a perfect promotion tool for retailers, restaurants, trade shows, network marketing, sales people, political statements, new product debut's and many others. Use your imagination; you can use the sign in many other fun ways. Use it in a birthday party to send a special greeting or sending blessing words to your friends. Leave messages for family members and guests. This sign gives you the ability to say whatever you want whenever you want and wherever you want!

Your message is stored in EEPROM, which means it is saved indefinitely, even when the power is off! Create a personalized message, then send the scrolling sign to a friend or love one. As soon as they open the box and plug it in, this clever device will automatically deliver your special greeting. Everyone will be amazed & delighted! Incredibly simple to program - just press the up/down buttons to scroll through the menu of letters and special characters.

Great Features:
    * Includes U.L. listed AC Wall Adapter
    * Attractive Front and Rear Plastic Panels
    * Size: 4.5 x 5.5 x 1.0 Inches
    * Perfect Project for Students & Hobbyists

MSGSIGN $29.00

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Three Train Sounds Kit
Three Train Sounds: Whistle-blowing, chugging, level crossing bell and clackety clack of train crossing a bridge. Just four switches and four components to add. COB PCB: 16mm x 29mm. Mother board supplied to fit COB PCB & components into. DATA SHEET
SG1M $11.95

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Binary Clock Kit - With Battery Backup
Your friends will never guess the time, until you let them in on the secret of this clock! This clever clock displays time in binary -- the ones and zeros of computer language. You’ll enjoy watching the constantly changing patterns of the lighted blue display as time passes. Just calculate the values of the lit LEDs in each column to read the time. Comes with a 120V AC power adapter and instructions. The time display can be in 12 or 24 hour modes. A wonderful gift for any techie or computer whiz!

The Binary Clock tells accurate time in high-tech style. It combines precision and fun in an easy-to-build kit. Six rows of brilliant BLUE LEDs are used to display hours, minutes and seconds in binary code - the language of computers. Once you understand the basics and after only a few moments of practice, you will have no trouble at all "reading" the time by adding the values of LEDs in each column. Or you can just watch the constantly changing light display that creates thousands of unique patterns. Measures 4-1/2" x 5-1/2" x 2"
This unique clock features battery backup so you will never lose the current time - even when the AC power goes out!
The kit includes an attractive plastic enclosure that looks great in any setting.
Everyone will be amazed and delighted by your binary clock.
23K006 $49.00

Bipolar Stepper Motor Driver Kit
This bipolar chopper drive has been designed for easy set-up and use. It features a dual full bridge motor driver based on SGS Thompson chips L297 & L298. Motor current is set using an on-board potentiometer and the controller is capable of handling motor winding currents of up to 2 Amps per phase. It operates from a DC supply voltage of 9-35V. The drive provides all basic motor controls, including full or half stepping of bipolar steppers and direction control. An on-board step pulse generator is adjustable from approximately 20 to 2000 pulses per second with an on-board potentiometer. In addition, all signals can be interfaced to external logic or a microcontroller. You can easily control the motor from your computer's parallel port! This controller is perfect for desktop CNC applications. The kit includes a double sided PC board, all parts, a transformer and a bipolar stepper motor; everything you need to get running immediately. A detailed illustrated assembly manual helps you learn while you're having fun! This kit also makes a great educational project for demonstrating stepper motor control principles.
23K001 $69.00

Jumbo 6-Digit LED Clock Kit
Are you tired of digital clocks with tiny four-digit displays? Our Jumbo 6-Digit Clock gives you the full SIX digits and each digit is a whopping 2.2 inches tall! The result is an eye-catching timepiece that is visible from anywhere! The seconds display gives precise timing accuracy. 
Place it on a desk, shelf or hang it on a wall and you can stop squinting to see the time. Other jumbo clocks form the digits with a bunch of LED "dots", but these are SOLID 7-segment displays with super brightness! The kit is fun and easy to build and ALL parts are included. Perfect for home, work, classrooms, stores, and HAM shacks. 
The 6-digit clock uses the Atmel AT89C1051 microcontroller chip that has a custom clock program burned in the flash program memory.
GREAT FEATURES: Unique & Practical Conversation Item  Guaranteed Timekeeping Accuracy 
Includes U.L. Listed AC Wall Adapter  Attractive Front and Rear Plastic Panels 
Size: 16"L x 4.5"H x 1.5"D. Selectable 12/24 Hour Operation, 50/60 Hz. SPEC SHEET 

20K001 $69.00

Scrolling LED Clock Kit
"Time Marches On" is more than just an expression with this unique Scrolling LED Clock!
Low cost digital clocks have been available for many years, but most show the time in a static four-digit display. The LNS Scrolling Clock creates an interesting timepiece by presenting the digits in a dot-matrix format and scrolling the time in a ticker-tape fashion. The result is an eye-catching timepiece that is truly unique. Place it on your desk, mantle or table and watch the attention it gets! Great Features: Includes U.L. Listed AC Wall Adapter, Attractive Front and Rear Plastic Panels, Size 4.5" x 5.5" x 1.0" Inches
Perfect project for Students and Hobbyists.
99K002 $49.00

YOU CAN DEFY GRAVITY!
With this easy-to-build magnetic levitator kit. It's the ultimate executive toy. You've never seen anything like it. We guarantee you and your friends will be completely amazed. All parts and step-by-step instructions included.
96K002    $74.95 each

TWINKLING HOLIDAY ORNAMENT KIT
Ornament is 3" tall, small enough to hang on your
Christmas tree or around your neck at a holiday party.
Either way, it's guaranteed to attract attention.
97K006    $18.00 each

STEPPER MOTOR DRIVER KIT
Drives unipolar motors from 5V to 30V. Controls speed, direction and step size. Four speed ranges plus single step. Logic output.
97K004    $39.00 each
 

ION PROPULSION MOTOR

This amazing device demonstrates the basic propulsion principles used in NASA's Deep Space 1 ion engine! The Ion Motor creates a high voltage potential that generates four streams of "ION WIND". The ion streams exert a reactive force that spins the rotor like a top. This item makes a great science fair project or an interesting desktop toy. The Ion Motor also generates negative ions which can reduce pollen and pollution in the air to produce a healthier environment.
99K001 ONLY $29.00
 

ELECTRONIC COMPASS KIT
A Global Positioning System receiver may be the ultimate location finder device, but for casual hiking, biking or camping this amazing digital electronic compass is an economical alternative. The compass kit uses an advanced Hall-effect sensor to detect the earth's magnetic field and converts the information into a directional display. Runs on 9V battery.
97K001    $32.00 each

CHANGE YOUR VOICE!
With this easy-to-build vocal special effects kit. You get all these great features: Clip-on electret microphone; Removable speaker; Sound effects selector; Long Battery Life (4 AA's not included); Adjustable volume control; robot, bear and chipmunk sound effects; Up/down pitch shifts; Special vibrato mode; Step-by-step instructions. Uses HT-8950 chip.
95K002    $49.95 each
 

BUILD A GAS ALARM!
Advanced solid-state sensor detects natural gas, propane and butane. All parts are included, with easy step-by-step instructions.
96K001 $29.95 each

12VDC IONIZER AIR PURIFIER KIT
Breathe mountain-fresh air all day long! This Ionizer Air Purifier quietly and efficiently fights indoor air pollution. It eliminates stale air odors, noxious fumes and organic irritants. You'll breathe easier and feel better. Destroys bacteria and reduces molds, mildew and allergens. Covers an entire 150 sq. ft. area. Size approx. 4.25" x 3" x 1.5".
99K006 $39.00

SAFETY FLASHING LED KIT
Three extra-bright LED's flash in unison on this 9V battery powered board. Use as safety warning for auto or bicycle, party gimmick, sea buoy, etc. Kits may be used in series to form an array. SPEC SHEET
95K001 Kit of Parts $3.95

INFRARED KIT
Includes assembled transmitter unit with thirty buttons, detector unit, printed circuit board, detector amplifier IC, and all parts needed to detect the signal from the transmitter and convert it to a serial TTL signal. Schematics included.
93V010 $19.95 each

RF FIELD STRENGTH METER KIT

This useful kit is a wideband RF detector that indicates RF field strength in the 100KHz to 500MHz range at low levels. The kit includes an etched and drilled circuit board and all necessary components, except 9V battery. It also comes with a plastic case, antenna and an attractive analog meter. The RF power reading is not linear and simply indicates the presence of RF and its relative level. However, it makes a great BUG detector or you can use it to test the output of any RF transmitter, including ham radios, cordless telephones and even car alarm transmitters! The circuit has an adjustable attenuator to handle everything from low to high power levels. Use during RFI/EMI precompliance testing. The kit is easy to assemble and comes with schematic diagrams and complete instructions.

97K005 $29.00 each

Water Alarm Kit
Here's an electronic project easy enough for a beginner but really useful. The simple Velleman MK108 Water Alarm kit has a buzzer to alert you to a leaking pipe, washing machine hose or hot water heater. Cut the circuit board and add wiring to install the buzzer farther from the sensor. Includes components, battery holder, directions and schematic. A good project to learn basic soldering. (Solder, tools and 9-volt battery not included.)
MANUAL
MK108 Unit Price : $5.95

Dual White LED Stroboscope

Velleman Clap Switch On/Off

Mini Moving Message Board Kit

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