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

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

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

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

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

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

Know electronics and want to learn programming? Or know programming and want to learn electronics? Learn both side-by-side with BASIC Stamp Activity Kit! Want to make your own inventions? Learn ci... CAT# PX-90005

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

The ever-popular Boe-Bot® Robot Full Kit is now available with a USB-compatible Board of Education (BOE) - at no additional cost to the consumer! Programming the BASIC Stamp via USB is an elega... CAT# PX-28832

Just 4 LEDs and 4 push buttons provide hours of fun. The aim of the game is to repeat a pattern, which is generated at random. The pattern is played both visually and audible or visually only (sele... CAT# MK-112

Beautiful tree consisting of 134 LEDs. 18 randomly blinking candles. No need to remove battery when using external supply. 12V operation possible for use in cars, vans, trucks. On/off switch inclu... CAT# MK-117

Bug-shaped miniature robot. The microbug is always hungry for light, it drives towards it. Features two open chassis sub-miniature motors. Adjustable light-sensitivity suits almost any light condit... CAT# MK-165

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

Velleman Kit # MK-167. Build-it-yourself circuit provides a safe, long-lasting, candle-like light that fits in standard 38mm candle cup. Yellow, high-intensity LED. Choose between three modes: flic... CAT# MK-167

Up to four players can compete. LED indicates first button pushed. Quizmaster 'RESET' -button with 'button pushed'-indication. Two units can be daisy-chained for eight-player-fun! Power supply: 9V ... CAT# MK-133

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

The BASIC Stamp HomeWork Board is ideal for learning circuits, electronics, and microcontroller programming. The solderless breadboard makes it easy to connect 5 V compatible sensors, displays, LED... CAT# PX-28188

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

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

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

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

5 red LEDs. Incorporated microphone. Adjustable sensitivity. Power supply: 3V type CR2032 battery (not included). CAT# MK-115

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

Turn equipment on and off at any location via GSM mobile phone applications: turn on lighting, heating, open your gate, simulate presence, control animal feeders, activate car alarm, etc... Ring de... CAT# MK-160

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

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

Flashing light effects for discos. Make your own snapshots and "lightning" light effects. Flash rate adjustable from 2 to 20 flashes per second. High-intensity, long-life flash tube. Power supply: ... CAT# MK-5300

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

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

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

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

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

Features choice of expressions to suit every mood! Choose between static or animated expressions. Great as desktop mood indicator or attention grabber. Complete with enclosure with On/off/expressio... CAT# MK-175

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