Kits (86 items)

2 output relay interface card, Board size L x W: 87 x 56 mm, Inputs: 3 … 24 VDC, Voltage supply: 12 VDC

200-Watt amplifier (assembled), Board size L x W: 107 x 62 mm, Music output: 200 W @ 4 Ω, RMS output: 100 W @ 4 Ω, 70 W @ 8 Ω, Frequency response: 3 Hz…200 kHz (-3 dB), Voltage supply: 2 x 25...30 ...

excellent value for money - fully discrete design using Epitaxial Darlington transistors - DC supply circuit on board with LED indication - ideal for active speaker system or subwoofer, guitar amp,...

This small amplifier is constructed with the TDA2616 IC, with a maximum supply capability of 2 x 15Wrms (4ohm) of 2 x 10Wrms (8ohm). The IC is thermally and short-circuit protected. Additional rect...

Features - big sound from a small unit - low distortion - input: stereo 3.5mm jack - volume adjust complete with attractive knob - slide on/off switch - blue indicator led

4-channel running light kit, Board size L x W: 100 x 83 mm, Voltage supply: 110...240 VAC

This small amplifier is constructed around the TDA2003 IC, capable of delivering 4Wrms at 4 ohms. The IC is fully protected against overheating and short circuits. A conventional direct current is ...

This relay card can be used in several ways : stand alone card, addressed by switches or open collector outputs or remote controlled through RS232. Since the card can be addressed using RS232 comma...

This small power supply provides a regulated voltage, adjustable between 1.5 and 35 volts at 1 Amp. With the LM317 regulator remarkably better ripple and regulation characteristics are given than w...

Adjustable Timer Kit, Board size L x W: 85 x 40 mm, Settable timer times: 0.5...5 s / 2.5...60 s, Current consumption: 100 mA, Relay output: 1 change-over contact 3 A, 24 VDC, Voltage supply: 12 VDC

Aerial Amplifier Kit, Dimensions L x W x H: 86 x 36 mm, Amplification: 22 dB, Current consumption: 3 mA, Voltage supply: 12...15 VDC, Dimensions L x W x D: 86 x 36 x 24 mm

Battery monitor 12 VDC

Just 4 LEDs and 4 push buttons provide hours of fun. The object of the game is to repeat a randomly generated pattern. The pattern is played both visually and audible or visually only (selectable)....

Cable Tester Kit, Board size L x W: 56 x 40 mm, Current consumption: 10 mA, Voltage supply: 1 x battery 9 V (49x27x17 mm)

Christmas Bell Kit, Board size L x W: 90 x 85 mm, Current consumption: 25 mA, Voltage supply: 1 x battery 9 V (47x27x17 mm) / 9…12 VDC

This code lock may be used to switch an alarm (e.g. car alarm K3504) on and off, or to open a door lock. An LED on the operating panel indicates the position of the 'lock'. The code is easy to defi...

simple brightness adjustment by means of a DC voltage - optically isolated adjustment input - pre-set adjustment for full brightness - suitable for incandescent lamps, mains voltage halogen lightin...

Educational solar kit

Helps making difficult YES or NO decisions. Ideal for the indecisive. Simply push the button to start flashing of YES/NO LEDs. Flashing speed gradually decreases and finally one LED remains lit. - ...

Electronic dice with LED indication. Slowly rolls to a stop when the push button is released. - power supply: 9V battery (not incl.) - dimensions: 42 x 60mm / 1.7 x 2.4"

no push buttons required, just give it a shake - slowly rolls to a stop and flashes the last combination - microprocessor-controlled - auto power-off

General purpose low-cost thermostat with NTC temperature sensor. Output relay with LED indicator. - also available as completely mounted module VM137

10-LED spinning wheel - 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

cannot be blown out by the wind - safe for kids and pets - great at home, for parties, Xmas, Halloween, etc. choose between 3 different modes: - realistically flickering flame - steady flame - fade...

Features - miniature Xmas gadget - 6 LEDs flash alternately - tree can be operated pending (e.g. from the ceiling or Xmas tree) or can be worn as a badge (pin supplied) - great attention grabber - ...

Christmas has never been this cosy ! 16 blinking LEDs. - also available in mounted version: MMK100

The ultimate Xmas gadget. - 16 flashing red LEDs - extra green and yellow LEDs provided to customise your tree - can be hung on and fed through wires

Show your sweetheart in an original way that your heart still beats for him or her. 28 LEDs form 2 blinking hearts.

Flashing Heart Kit, SMD, Board size L x W: 49 x 44 mm, Current consumption: 5 mA, Voltage supply: 1 x battery CR2032 (3 V)

Drive more safely in freezing weather. This kit uses a flashing LED to indicate a road temperature close to freezing point ; below that point the LED is on continuously. A reliable temperature sens...

HF Detector Mini Spy Finder

pre-drilled holes for K8060

Applications : announce visitors, warn against burglars, set boundaries, for science projects,... - audible (85dB) and visible (LED) alert - range: 3.3ft to 13ft - on/off switch provided power supp...

The easy way to check your IR remote for proper operation. Simple operation : point the remote at the sensor and push an arbitrary button. Four flashing LEDs indicate remote operation. Specificatio...

compact 2-button IR keychain remote - compatible with most Velleman IR receivers - 2 powerful IR LEDs for a range of up to 15m (indoors) - 16 channels (allow use of multiple transmitters in one roo...

Suited for different applications (e.g. model construction) and also educational. Adjustable flashing speed with two potentiometers.

two super bright red LEDs - very powerful flash effect - for emergencies, warning signs, as eye-catcher, 'alarm-active' - simulation, etc ... - 'Auto turn-on at dark' - mode with adjustable sensiti...

LED dimmer kit, Board size L x W: 100 x 40 mm, Voltage supply: 12...24 VDC

This big star has as many as 60 LEDs and is microprocessor controlled to achieve 24 different animations. Apart from red LEDs, yellow LEDs are also included to create a star in your own mix of colo...

Attractive bright coloured bug-shaped miniature robot. The microbug is always hungry for light and travels toward it! Features - two open chassis subminiature motors - adjustable light sensitivity ...

Liquid Level Controller Kit, Board size L x W: 104 x 60 mm, Current consumption: 110 mA, Relay output: 3 A @ 240 VAC, Voltage supply: 16...18 VDC / 12...14 VAC

This stereo speaker protection prevents switch-on clicks and DC components on the output of the amplifier connected. - switch-delay: ± 6 seconds - DC protection: +1V/-1V - max. input voltage: 200Vp...

check your love life ! - each partner holds one end of the PCB, then they join hands, watch the meter go ... - great fun at parties, among friends, etc... - 10-LED readout plus audible 'love-level'...

MP3 jukebox module, Board size L x W: 45 x 40 mm, Connections: USB/SD card, Current consumption: 50 mA, Voltage supply: 9 VDC

To come up against an electric cable while drilling a hole in a wall can have catastrophic consequences. Likewise, drilling into gas, water pipes or central heating pipes can be extremely hazardous...

Microphone/Headphone Amplifier Kit, Stereo, Board size L x W: 62 x 54 mm, Voltage supply: 3 x battery AA (4.5 V)

Features - microcontroller circuit, fit for incandescent lamps, mains halogen lamps and the new energy saver halogen lamps. - install the module in the (existing) lighting circuit, just add one or ...

Mini-6-LED chaser kit, Board size L x W: 25 x 55 mm, Current consumption: 20 mA, Voltage supply: 4...15 VDC

This kit was developed as 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.

Pink Noise Generator Kit, Board size L x W: 67 x 43 mm, Current consumption: 5 mA, Output voltage: 150 mV RMS, Voltage supply: 12...15 VDC / 9...12 VAC, Output impedance: 1 kΩ

Pocket VU Meter Kit, Board size L x W: 87 x 50 mm, Voltage supply: 1 x battery CR2032 (3 V)

Portable VU Meter Kit, Board size L x W: 82 x 30 mm, Voltage supply: 1 x battery CR2032 (3 V)

Power control 110...240 VAC 4000 VA, Dimensions L x W x H: 87 x 60 x 33 mm

just add a suitable transformer (see table) - 9Vac: 109010C - 12Vac: 112012C - 24Vac: 212024C - great to power your projects and save on batteries - use as adjustable power supply for experiments -...

Power supply unit 3-30VDC/3A (kit), Board size L x W: 130 x 91 mm, Output current: 3 A max., Output voltage: 3...30 VDC, stabilised, Voltage supply: 9...30 VAC

Pulse-pause timer 1 s...60 h, Board size L x W: 80 x 45 mm, Settable timer times: 1 s… 60 h, Voltage supply: 12...24 VDC

Pulse-pause timer 1 s...60 h, Board size L x W: 80 x 45 mm, Settable timer times: 1 s… 60 h, Voltage supply: 12...24 VDC

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 ! Specifications -...

Rolling Clock Kit, Board size L x W: 88 x 70 mm, 24-hour clock: 12 h, Current consumption: 20 mA, Voltage supply: 9...12 VDC

Rolling Text Sign Kit, Board size L x W: 88 x 70 mm, Current consumption: 20 mA, Voltage supply: 9...12 VDC

Attractive bright colored bug-shaped miniature robot. The microbug is always hungry for light, it drives towards it! - two open chassis sub-miniature motors - adjustable light-sensitivity suits alm...

8 LEDs. Different LED running effects are selectable (PROG push button). Adjustable effect speed (SPEED potentiometer). Push button for power stand-by (OFF push button). - power supply: 9V battery ...

SMD Christmas tree, Board size L x W: 63 x 57 mm, Current consumption: 7 mA, Voltage supply: 1 x battery CR2032 (3 V) / via USB

signal output: sine wave, triangle, square wave and integrator (selectable through jumper) - signal frequency: about 1kHz (fixed) - output level: adjustable from 0 to 100mVrms (LEVEL potentiometer)

Signal Tracer/Injector Kit, Board size L x W: 60 x 53 mm, Current consumption: 150 mA, Output voltage: 0...2.5 V 1000 Hz, Voltage supply: 9...12 VDC / 7...9 VAC, Output impedance: 1.5 kΩ

Smiley Kit SMD, Board size L x W: 29 x 29 mm, Current consumption: 5 mA, Voltage supply: 1 x battery CR2032 (3 V)

Chirps or glows as long as the sun shines. Features - realistic cricket chirp - slow fading green led simulates glow-worm Specifications - solar cell: 4.5V/ 35mA - optional rechargeable batteries: ...

Solar charge controller dual 16 A

Sound Effect Generator Kit, Board size L x W: 75 x 75 mm, RMS output: 1 W @ 8 Ω, Current consumption: 100 mA, Output voltage: 1 V RMS, Voltage supply: 8...10 VDC

Sound Effect Generator Steam Engine Kit, Board size L x W: 100 x 83 mm, Voltage supply: 1 x battery 9 V (49x27x17 mm)

Enter the world of amazing electronic sounds and noises. Create or imitate sirens of all kinds by adjusting 3 trimmers. Powerful sound with a 2W amplifier on the PCB - modulation speed: 0.5 - 5s - ...

Traditional LED VU-meters are boring! This star-shaped VU-meter will brighten up your party! - 60-LEDs sound star - responds to sound and music in a 'VU-meter'-fashion - built-in microphone - adjus...

Four high-intensity LEDs light up and react simultaneously to every sound. For different funny and practical applications e.g. sound indicator, simple sound-to-light unit for music. The unit can al...

Designed to control AC motors with carbon brushes (drilling machine, vacuum cleaner, saw, …). High torque, even at low r.p.m. May also be used for low voltage loads (24V). Supply and load circuit e...

wide timing range easy time setting LED animation during operation on-board START-STOP buttons non retriggerable power-on trigger is possible debounced buffered inputs avoid false triggering compac...

EDU03 includes a soldering iron, tools, electronic parts and the necessary printed circuit boards to complete two Minikits. An ideal introduction to soldering. Comes complete with a handy storage box.

Features - two super bright white LEDs - powerful flash effect - great for parties, scale models, as an attention grabber, to observe moving parts, etc... - slow/fast selector and speed adjust trim...

Miniature timer for all applications requiring a delay of up to 60 minutes. The control range may be adjusted. Specifications - power supply: 12VDC / 55mA - relay: 3A / 220V switchable - time inter...

Traffic Light Kit, Board size L x W: 115 x 50 mm, Current consumption: 15 mA, Voltage supply: 1 x battery 9 V (49x27x17 mm)

Transformer 2 x 12 VAC, 1 x 2 A, Dimensions L x W x H: 50 x 60 x 50 mm

Two channel LED flasher, Board size L x W: 65 x 22 mm, Current consumption: 3 A, Voltage supply: 12 VDC

USB experiment board, Board size L x W: 89 x 145 mm, Current consumption: 70 mA, Voltage supply: via USB

Kemo Electronic M032S - Amplifier for speaker

When using one of our amplifiers (big or small), you always need a volume control and preferably also a tone control. This kit comes complete with all input / output connections and potentiometers....