Narrow Your Results

 
FirstPrevious • Showing page 1 of 1 (34 items found) • NextLast
Pages: 1
 
Sort Order:
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
2 Available
$36.95 each
Web Only!
Quantity:  
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
Quantity:  
 
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
3 Available
$16.95 each
Web Only!
Quantity:  
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
$19.95 each
Quantity:  
 
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
3 Available
$18.50 each
Web Only!
Quantity:  
 
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
$9.95 each
This product is currently on Back Order and should be available after 01/30/15
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
Quantity:  
 
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
Web Only!
Quantity:  
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
3 Available
$9.25 each
Web Only!
Quantity:  
 
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
$28.95 each
Quantity:  
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
Quantity:  
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
Quantity:  
 
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
This product is currently on Back Order and should be available after 12/19/14
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
Quantity:  
 
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
0 Available
$5.50 each
Web Only!
This product is currently on Back Order and should be available after 12/24/14
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
Quantity:  
 
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
$13.95 each
Quantity:  
 
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
Quantity:  
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
$24.95 each
Quantity:  
 
5 red LEDs. Incorporated microphone. Adjustable sensitivity. Power supply: 3V type CR2032 battery (not included). CAT# MK-115
5 Available
$8.95 each
Web Only!
Quantity:  
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
11 Available
$21.95 each
Web Only!
Quantity:  
 
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
18 Available
$14.95 each
Web Only!
Quantity:  
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
Web Only!
Quantity:  
 
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
Quantity:  
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
Quantity:  
 
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
Quantity:  
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
8 Available
$12.00 each
Web Only!
Quantity:  
 
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
Quantity:  
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
Quantity:  
 
Velleman # MK-171. Make your voice sound like a robot. Add vibrato effect. Use pitch buttons to make your voice higher or lower. Built-in microphone and power amplifier with volume control - just a... CAT# MK-171
$16.80 each
This product is currently on Back Order and should be available after 01/30/15
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
14 Available
$7.95 each
Web Only!
Quantity:  
 
 
FirstPrevious • Showing page 1 of 1 (34 items found) • NextLast
Pages: 1
 
Sort Order: