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Velleman # K8044. Create eye-catching effects for advertisement lighting, parties, discos, etc. Kit provides 10 12 Volt 400 mA outputs to control light bulbs, LEDs, or solid-state relays. 10 pre-pr... CAT# MK-44
0 Available
$36.95 each
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Easy to build, only 2 wires to connect (connect after ignition). Uses multi colour 3mm LED... green: battery OK, Slow pulsing (green): battery OK or charging, red: battery voltage is low, red blink... CAT# MK-189
$9.95 each
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Power up to four 1W or two 3W high-power LEDs (not included). Delivers accurate constant current required by most high-power LEDs. High efficiency due to switch mode principle. Built-in rectifier f... CAT# MK-8071
2 Available
$16.95 each
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Features big sound from a small unit. Low distortion. Stereo 3.5mm jack input. Volume adjust complete with attractive knob. Slide on/off switch. Blue indicator led. 2 x 5Wrms (10% THD @ 4ohm / supp... CAT# MK-190
2 Available
$19.95 each
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Small but powerful amplifier suits a wide range of applications such as: microphone amp, for doorbells, melody generators, intercom, sound effects, earphones, radio receivers, PC sound card and mus... CAT# MK-8066
$14.95 each
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Velleman # K4001. Small amplifier constructed around a TDA2003 IC, capable of delivering 4 Watts RMS at 4 Ohms. Music power: 7 W @ 4 ohms. RMS output: 3.5 Watts @ 4 Ohms / 2 Watts @ 8 Ohms. Frequen... CAT# MK-4001
$19.95 each
Quantity:  
 
Bell swings from side to side. Can be powered by 9 volt alkaline battery (not included). May also be powered by 9 to 12 Vdc adapter. Dimensions: 3.4" X 3.3" CAT# MK-122
2 Available
$18.50 each
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Velleman # MK111. For intermittent operation of circuits and equipment. Use for blinking light control, slide projector control etc. Pulse time adjustable between 0.5 and 5 seconds. Pause time adju... CAT# MK-111
21 Available
$9.95 each
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Two potentiometers adjust the flash rate oftwo LEDs. 9V operation. Battery not included. Note: Kits cannot be returned or exchanged once assembly has begun. CAT# MK-1021
$4.95 each
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Velleman # K7300.Versatile kit allows charging of NiCd and NiMH batteries of different voltages and capacities. Settings for rapid and normal charge rates. Also has a feature that discharges the ... CAT# MK-173
1 Available
$29.80 each
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Simple do-it-yourself kit provides hours of fun. The aim of the game is to use the 4 pushbuttons to repeat a randomly generated pattern shown on the 4 LEDs. The pattern is played both visually and ... CAT# MK-112
14 Available
$9.25 each
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Velleman # K8004. Ideal for the accurate control of DC motors, lighting levels and small heaters as well as other applications. The circuit converts DC voltage into a series of pulses, the duration... CAT# MK-804
0 Available
$28.95 each
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This product is currently on Back Order and should be available after 04/06/15
 
Designed for children, ages 8 and up, this alarm kit includes a simple to understand instruction booklet that teaches the basics of electricity, electrical circuits, resistors, transistors, piezo t... CAT# KFK-3
$2.95 each
10 or more    $2.50 each
Quantity:  
Drive your friends (or enemies) crazy. Automatically comes on when it gets dark. Adjustable chirp rate, light sensitivity and tone. 9V operation. Battery not included. CAT# MK-104
$8.95 each
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Velleman Kits # KNS7. Fun with gears and motors. Small 3 Vdc motor, metal bracket and axles, and an assortment of small plastic gears and collars to produce a gear train of various ratios. Note: ... CAT# GR-84
$11.95 each
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The SparkFun Inventor's Kit is a great way to get started with programming and hardware interaction with the Arduino programming language. Includes everything you need to complete 15 circuits that ... CAT# SFA-22
$99.95 each
10 or more    $89.96 each
Quantity:  
 
Announce visitors, warn against burglars, set boundaries, for science projects, with audible (85dB) and visible (LED) alert. Range: 3.3ft to 13ft. Power supply: transmitter: 9V DC / 50mA max. Recei... CAT# MK-120
$10.75 each
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The easy way to check your IR remote for proper operation. Simple operation : point the remote at the sensor and push any button. 4 flashing LEDs indicate remote operation. Power supply: 9V battery... CAT# MK-137
27 Available
$5.50 each
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Build this variable speed led chaser. 10 leds flash sequentially at whatever speed you set them for. Easy to build kit includes pc board, parts and instructions. Ideal for special lighting effects,... CAT# AEC
$6.50 each
10 to 99    $6.25 each
100 or more    $6.00 each
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Two L.E.D.'s flash in unison when a 9 volt battery is attached. This kit includes a p.c. board, all the parts and instructions to make a simple flasher circuit. A quick and easy project for anyone ... CAT# LEDKIT
$2.25 each
100 or more    $2.00 each
Quantity:  
 
Operates at safe voltage level. Makes lamps flash to the rhythm of the music. Usable for halogen bulbs. Optically isolated speaker input. Adjustable sensitivity. Can be used in the car, if the lamp... CAT# MK-114
10 Available
$13.95 each
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Velleman# K7102. Ideal for locating metal pipes and objects in walls or ceilings. An LED indicates if a metal object is in the vicinity. If an audible signal is desired, space is provided for a bu... CAT# MK-7102
$18.00 each
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ArTec 008973. This car kit is designed to accommodate various energy experiments. Perforated board used as the car base body makes it easy to lay and fix the parts the way you like. You can change... CAT# ARK-973
$8.99 each
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Velleman# K4301. To analyze the acoustic properties of a room (usually a living room), a good pink noise generator together with a spectrum analyzer is indispensable. Moreover, a microphone with a... CAT# MK-4301
4 Available
$24.95 each
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5 red LEDs. Incorporated microphone. Adjustable sensitivity. Power supply: 3V type CR2032 battery (not included). CAT# MK-115
3 Available
$8.95 each
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ArTec 093564. Push-button programmable robot kit. No soldering required. Weave through an obstacle course using the left, right, or forward buttons. Learn to program and guide your robot through a ... CAT# ARK-564
$25.99 each
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Velleman # K2633. Control up to four high-power circuits from a low power drive circuit. Four 3 Amp / 240 Vac, S.P.D.T. relays. Quick and easy to build. LED status indicators. 3" x 1.7." Power supp... CAT# MK-2633
9 Available
$21.95 each
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ArTec# 152198. Entry level robotics kit, for ages 8 and up. Learn about simple machines, mechanical linkages, cranks, gears, motors and more. 72 pieces, 22 page manual and 1 motor. Can be assembled... CAT# ARK-198
$24.99 each
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Velleman# MK-127. Bug-shaped miniature robot. Driven by two miniature motors, its photocell sensors seek light. Stops in total darkness. LED eyes indicate driving direction. 3.93" x 2.36." Operates... CAT# MK-127
16 Available
$14.95 each
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126 LED multicolor animated Xmas gadget. No need to remove battery when using external supply. 12V operation possible for use in cars, trucks. On/off switch included. Power supply: 9 to 12V DC or 9... CAT# MK-116
2 Available
$30.00 each
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Signal output: sine wave, triangle, square wave and integrator (selectable through jumper). Signal frequency: about 1 KHz (fixed). Output level: adjustable from 0 to 100mVrms (LEVEL potentiometer).... CAT# MK-105
$10.95 each
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Push the button to start spinning action. Spinning speed gradually decreases, finally it stops and one LED remains lit. Auto power-off. Low power consumption. Power supply: 9V battery (not included... CAT# MK-152
$7.95 each
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ArTec 196407. A compact Van de Graaf generator which uses aluminum to accumulate static electricity. Includes 16 page instruction booklet and study guide. Static electricity is explained and a numb... CAT# ARK-407
$14.99 each
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Generates sound of a vintage steam engine. Adjustable 'speed' and volume. Great for model railroads, radio plays, stage, as gadget. With 'steam whistle'-push button. Specifications · power... CAT# MK-134
$13.45 each
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Stereo audio amplifier boosts sound 50 times. Great for the-hearing impaired (e.g. when watching TV), as a gadget, science project, with volume control and on/off switch. Power supply: 3 1.5V AA ba... CAT# MK-136
3 Available
$12.00 each
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Miniature traffic light as used on four-way junctions. Realistic operation with adjustable delay. 12 LEDs. Great for model railroads, exhibitions, and toys. Low power consumption: 15mA. Power suppl... CAT# MK-131
$10.95 each
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This kit was developed as a pre-module for a number of audio applications where the input signal is too weak. Applications as a microphone pre-amplifier or for level correction. Compact design. Low... CAT# MK-1803
$12.85 each
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ArTec 095059. With this kit you can build your own bipedal, pulley-powered fast-walking robot. A good, fun way for kids to learn about electricity and pulleys (for ages 8 and up). The robot has a c... CAT# ARK-059
$12.99 each
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Buzzer sounds when water is detected. Water sensor can be placed at a distance by cutting the board and using wires to connect the sensor. 9V operation. Battery not included. Note: Kits cannot b... CAT# MK-108
27 Available
$7.95 each
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