L.E.D Projects

 $18.11

K3 Kit 3 LED Dice with Slowdown

A kit to introduce you to electronics and circuit analysis. Seven LEDs arranged like a real dice face. Push the switch and the dice rolls then slows down. Ingenious circuit design used to minimise components. Uses 14017 & 555. Box included. 9V battery operation.

 


$18.21

K5 Kit 5 Stairway to Heaven

A game of skill to turn on the Stairway of 6 LEDs as the bi- colour LED flashes. Introduces you to several electronics basic circuits with a surprisingly difficult game to play. Box included. Good introduction to electronics. 9V battery.

 

 

$23.23

K6 Kit 6 Roulette LED

Electronic game. Ten LEDs in a circle. One LED is turned on at a time to simulate the spinning of a roulette ball around the wheel. Uses voltage controlled oscillator circuit. 'Ball' gradually slows down and stops on a number. 'Ball' speed can be adjusted. Uses 9V battery.

 

 

$14.00

K37M Kit 37M Five LED Pattern Flasher

Kit 37M. Five red LED's flash in seven patterns. The modes can be cycled through using an on-board SPDT switch. When the desired flashing pattern is found just leave the switch there and the pattern will remain flashing as long as power goes to the board & the switch remains set. COB PCB measuring 3cm x 1.5 cm. October 2000. Now with trimpot to vary flash rate.


$39.75

K46 Kit 46 Christmas Star

New kit which flashes 30 super-bright, red LEDs in a variety of different patterns. The patterns are read from a lookup table in a micro-controller. Electrically the same as Kit 136; it is only the lookup table and the physical layout of the LEDs which are different between them. These circuits would be impossible using normal ICs. Both circuits are used with permission from the designer, Les Grant. All source code is provided.

 




$10.89

K 52M - Five Ultra-Bright LED Flasher

Five Ultra Bright LED's flashing in random or in sequence. Uses a COB (Chip-on-board) PCB measuring 3cm x 1.5 cm. The flashing frequency is set by a single external resistor between 300K and 1M ohm. A pad connected high determines the random or sequential flash pattern. A second pad connected low determines whether the flashing is continuous or set by a toggle switch.

Excellent project for schools since the project is very safe - uses 2 x 1.5V batteries, can be easily put together within 30 minutes, teaches the latest electronic technology as found in games and toys and give an strong visual result when it is finished. Comes with a motherboard to aid attaching the components to the COB PCB.

Assembled Kit

 


$28.87

K61 Kit 61 3 1/2 Digit LED Panel Meter (using 7107)

Make this general design 3 1/2 digit LED panel meter into your own voltage or current meter. Or customize it to measure input from a transducer. Full details given in the documentation. Separate display PCB.

7107 Data Sheet.

 


$15.48

K69 Kit 69. Electronic Dice PIC 16C54

One of the most popular electronic kits ever is an electronic dice. Now we have used a microcontroller to contain all the electronics. Only those items which cannot be put into software - like the display - are still in hardware. All the code is on floppy disk. PCB size 1.4"x2.6".

Software Single Dice 10K

 


$20.88

K71 Kit 71. Dual Electronic Dice PIC16C54

The code in Kit 69 is extended to roll two dice. PCB size 1.4"x2.6".

Software Dual Dice 14K

 


$59.00

K73 Kit 73 Big PIC Clock

This is a big digital clock using 2.3" LED displays for the hours and minutes. It can operate in 12-hour or 24-hour mode. The software program including a time adjustment mode can control the clock to a few seconds a year. This project was originally published in the Australian electronics magazine Silicon Chip , march 2001. The fully annotated software for the kit is available here.

 


 $29.50

 

K136 Kit 136 Heart of Love

A rearrangement of the Star LEDsKit 46 into two hearts. All that has changed is the software lookup table. Electrically the hardware stays exactly the same. This demonstrates the power of using a micro-controller over normal IC's. These two new kits (kits 46 and 136) flash 30 super-bright, red LEDs in a variety of different patterns. The patterns are read from a lookup table in a micro-controller. Electrically both circuits are the same; it is only the lookup table and the physical layout of the LEDs which is different. These circuits would be impossible using normal ICs. Both circuits are used with permission from the designer, Les grant. All source code is provided.

We have found in recent batches of 2051's (used in the Star, Kit 46 and Heart, Kit 136) that the reset pullup resistor in the chip is up the higher end of the specification than the early ones. You should be able to reduce the reset cap down to 2u2 or 1u without problems. In more "serious" designs you would add a 100k pullup resistor which would swamp variation in the chip pullup.

 


 $11.50

K138 Kit 138 Two LED Flasher

This kit wires the popular 555 IC as a stable, free-running multivibrator. It is wired as a square wave oscillator. Flashes two LEDs in an alternating pattern.

 




 $19.90

K169 Kit 169 Versatile PIC Flasher

This kit yet again demonstrates the power of micro-controllers. Imagine trying to do this kit with discrete logic. Five DIP switches set the flash speed, depth of modulation and flash type.

 


 $32.00

K191 Kit 191 RGB LED Controller

This kit has been designed to function as a versatile LED control module. The LED controller provides 3 high current channels to create light effects for the presentations, parties , etc. The module includes preprogrammed light sequences and can be used as a standalone LED communicate with your microcontroller or PC. The simple command set allows easy module control from the microcontroller or PC.

The module is ideal for use with flexible LED light strips.


$34.40

RIDING SANTA (MOUNTED)-MMK116

126 LED multicolor animated Xmas gadget. No need to remove battery when using external supply. 12V operation possible for use in cars, vans, trucks. On/off switch included.

Specifications

  • power supply: 9 to 12V DC or 9V alkaline battery (not incl.)

  • dimensions: 3.2" x 5.7"

 


$39.20

DE LUXE XMAS TREE (MOUNTED)-MMK117

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 included.

Specifications

  • power supply: 9 to 12V DC or 9V alkaline battery (not incl.)

 




$28.80

ANIMATED GHOST-MK166

Features

  • great Halloween gadget

  • greets your visitors

  • for shops, parties, events or just for fun

Specifications

  • ghost responds to sudden noises

  • adjustable sensitivity

  • battery operation: 2xAAA battery

  • dimensions: 137x68x50mm / 5.39 x 2.68 x 1.97"

 



$11.40

FLICKERING ELECTRONIC CANDLE KIT-MK167

Features

  • 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 in - fade out

  • fits standard 38mm cup

  • safe: no flame or heat

  • 5h turn-off timer saves batteries

  • yellow high-intensity LED

Specifications

  • power supply: 1x CR2032 3V battery (not incl.)

  • autonomy: +/- 15 days (5h/day, flickering candle mode)

  • power-off timer: +/- 5h

  • current consumption: 4mA max

  • dimensions: 1.50 x 0.98"

 



$18.40

FLASHING RED LED STAR-MK169R

Features

  • great seasonal gadget !

  • safe battery operation

  • select: flashing or static operation

  • application: desktop or hanging from the ceiling

  • several units enhance the effect

  • in-car (12V) operation possible

Specifications

  • 35 LEDs

  • power supply: 1x 9V battery (not incl.)

  • current consumption: 40mA (static mode)

  • flash duty cycle: 1:2

  • dimensions: 3.54 x 3.54"

 



$18.40

FLASHING YELLOW LED STAR-MK169Y

Features

  • great seasonal gadget !

  • safe battery operation

  • select: flashing or static operation

  • application: desktop or hanging from the ceiling

  • several units enhance the effect

  • in-car (12V) operation possible

Specifications

  • 35 LEDs

  • power supply: 1x 9V battery (not incl.)

  • current consumption: 40mA (static mode)

  • flash duty cycle: 1:2

  • dimensions: 90x90mm

 



$26.60

60-LED MULTI-EFFECT STAR-MK170

Features

  • processor-controlled LED star creating multiple dazzling effects

  • extra LEDs included, allowing different colour combinations: make your own mix of red and yellow LED's or make the star fully red or yellow

  • on-board effect selection push button

  • 24 effects

    • 3 static

    • 15 blinking

    • 6 animations with fading

  • "All effects" sequencing is possible (standard setting)

Specifications

  • 60 LEDs on board

  • power supply: 9 to 12Vdc adapter or battery (not incl.)

  • current consumption: 20mA (static mode 9V battery)

  • dimensions: 4.13 x 4.33 x 1.38"

 


$27.80

SOUND STAR-MK172

Traditional LED VU-meters are boring!
This star-shaped VU-meter will brighten up your party!

Features

  • 60-LEDs sound star

  • responds to sound and music in a 'VU-meter'-fashion

  • built-in microphone

  • adjustable sensivity

  • multiple units enhance the effect

  • great for parties, events, trade-shows, as eye-catcher etc.

Specifications

  • power supply: 9 - 12VDC / 200mA

  • dimensions: 105 x 110 x 35mm / 4.2 x 4.4 x 1.4"

 


$16.60

MINI-6-LED CHASER-MK173

Features

  • 1 LED scans from side to side

  • as attention grabber in stores, at exibitions, etc...

  • as seen in classic TV series...

  • applications:

    • toys

    • scale and RC models

    • as gadget

    • for stage, plays, movies, etc...

  • 6 high-intensity 3mm red leds

Specifications

  • power supply: 4-15VDC (20mA at 12VDC)

  • fixed scan speed (side to side): 0.5s

  • dimensions: 55x25x10mm / 2,18 x 0,99 x 0,39"

 


$8.40

ELECTRONIC CHRISTMAS TREE-MK100

Specifications

  • very low power consumption: max. 4mA

  • power supply: 9V battery (not incl.)

  • dimensions: 2.4" x 4.0" x 1.0"

Christmas was never so congenial ! 16 blinking LEDs


$9.50

3D XMAS TREE-MK130

The ultimate Xmas gadget.

Features

  • 16 flashing red LEDs

  • extra green and yellow LEDs provided to customize your tree

  • can be hung and supplied through the wires

Specifications

  • low power consumption: 8mA

  • power supply: 9V battery operation (not incl.)

  • will operate on 12V DC (e.g. in cars, ...)

  • dimensions: 3.1" x 3.5" x 4.0"

 


$13.80

SMD X-MAS TREE-MK142

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

  • ideal introduction to SMD (Surface Mounted Device) technology

  • some extra parts are supplied, in case some get lost or damaged

Specifications

  • power supply: 3V Li button cell (e.g. CR2025 or CR2032)

  • power consumption: 5mA approx.

  • dimensions: 1.75" x 1.6" x 0.3"

 


$7.60

FLASHING LED SWEETHEART-MK101

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

Specifications

  • consumption: ± 8mA

  • power supply: 9V battery (not incl.)

  • dimensions: 2.4" x 2.4" x 1.2"

 


$6.90

FLASHING LED's-MK102

For different applications (such as model construction), and recreational. Adjustable flashing speed with two potentiometers.

Specifications

  • consumption: ± 8mA

  • power supply: 9V battery (not incl.)

  • dimensions: 1.2" x 1.4" x 0.6"

 


$ 6.40

SOUND-TO-LIGHT UNIT-MK103

Four high-intensity LEDs light up and react simultaneously on every sound. For different funny and practical applications, such as : sound indicator, simple sound-to-light unit for music, for the hearing impaired : can be used to indicate the telephone, door bell. Adjustable sensitivity with potentiometer. Built-in microphone.

Specifications

  • consumption: 0.5mA min. / 12mA max.

  • power supply: 9V battery (not incl.)

  • dimensions: 1.6" x 2.2" x 1.4"

 


$11.80

METRONOME-MK106

Speaker included. LED beat indication. Adjustable volume and beats / minute with potentiometers. On / off switch on board.

Specifications

  • power supply: 9V battery (not incl.)

  • dimensions: 2.4" x 1.7

 


$12.30

LED RUNNING LIGHT-MK107

8 LEDs. Different LED running effects are selectable (PROG push button). Adjustable effect speed (SPEED potentiometer). Power stand-by push button (OFF push button).

Specifications

  • power supply: 9V battery (not incl.)

  • dimensions: 3.5" x 1.6"

 


$ 9.99

ELECTRONIC DICE-MK109

Electronic die with LED indication. Rolls slowly out when the push button is released.

Specifications

  • power supply: 9V battery (not incl.)

  • dimensions: 1.7" x 2.4"

 


$11.20

BRAIN GAME-MK112

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 (selectable). It features 4 difficulty levels, which can be selected at start-up. The replay speed gradually increases during the game, to make it even more challenging. Low power consumption. Microprocessor controlled. Auto power off.

Specifications

  • power supply: 3 1.5V AA batteries (not incl.)

  • dimensions: 2.0" x 2.6"

 


$32.20

BRAIN GAME-MK159

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 (selectable). It features 4 difficulty levels, which can be selected at start-up. The replay speed gradually increases during the game, to make it even more challenging. Low power consumption. Microprocessor controlled. Auto power off.

Features

  • enclosure included

Specifications

  • power supply: 3 1.5V AA batteries (not incl.)

  • dimensions: 3.3" x 2.6" x 1.6"

 


$11.40

POCKET VU METER-MK115

Surprise your friends in the disco. 5 red LEDs. Incorporated microphone. Adjustable sensitivity.

Specifications

  • power supply: 3V type CR2032 battery (not incl.)

 


$16.00

POCKET VU METER IN ENCLOSURE-MK146

Features

  • LEDs move to the rhythm of the music

  • surprise your friends in the disco

  • incorporated microphone

  • adjustable sensitivity

Specifications

  • power supply: 3V type CR2032 battery (not incl.)

  • on/off switch

  • 5 LEDs

  • designer enclosure

  • dimensions: 3.4" x 2.0" x 1.0"

 


$21.40

ROULETTE-MK119

37 LEDs. Spinning sound. 'Winner'-tune for each color. Spins LEDs between games. Pushbutton operation. Microprocessor technology.

Specifications

  • auto power-off

  • low power consumption

  • power supply: 3 AA battery operation (not incl.)

  • dimensions: Ø3.6" x 1.3"

 


$10.00

IR LIGHT BARRIER-MK120

Applications : announce visitors, warn against burglars, set boundaries, for science projects,...

Specifications

  • audible (85dB) and visible (LED) alert

  • range: 3.3ft to 13ft

  • on/off switch provided

  • power supply:

    • transmitter: 9V DC / 50mA max.

    • receiver: 9V DC / 20mA max.

    • 9V battery holder and adapter jack included

  • dimensions:

    • transmitter: 2.2" x 1.6"

    • receiver: 3.9" x 2.0"

  • not recommended for outdoor use

 


$22.00

83 LED ANIMATED BELL-MK122

No need to remove battery when using external supply. 12V operation possible for use in cars, trucks. On/off switch included.

Specifications

  • power supply: 9 to 12V DC adapter or 9V alkaline battery (not incl.)

 


$20.40

ROLLING CLOCK-MK123

Nicely animated rolling time and date display. Graphic display with 35 LEDs. Select hours, minutes, month or day with SELECT and enter the values with SET. Time display in 12h-mode (24h-mode when setting clock). Fine-tune the clock by turning CV1.

Specifications

  • power supply: 9-12V DC adapter or car battery

  • current consumption: 20mA max.

  • backup battery: 9V block type 6LR61 / 6F22

  • dimensions: 1.8"/3.5" x 2.6"

 


 $21.40

ROLLING MESSAGE-MK124

Create your own moving message. 35-LED graphic display. Max. 16 characters. Adjustable scrolling speed. Press "SET" to change a particular character. Press the up or down-key to select a character and end with the "<"-sign. Display standby function: press "Stby" (press RUN to restart)

Specifications

  • power supply: 9-12V DC adapter or car battery

  • current consumption: 20mA max. / 4mA standby

  • backup battery: 9V block type 6LR61/ 6F22

  • dimensions: 1.8"/3.5" x 2.6"

 


$21.80

KITCHEN TIMER-MK128

1 minute to 1 hour timing. Single button, straightforward operation. Clear 16-led readout. Audible and visible alarm with discrete pre-alarm. Auto power-off. Attractive designer enclosure.

Specifications

  • µcontroller technology

  • settings:

    • 1-10': one minute steps

    • 10-30': five minute steps

    • 30-60': 15 minute steps

  • basic accuracy: better than 5%

  • power supply: 3 AAA 1.5V batteries (not incl.)

  • power consumption: 10mA typ.

  • dimensions: 3.1" x 3.0" x 1.3"

 


$8.40

TRAFFIC LIGHT-MK131

Miniature traffic light as used on four-way junctions. Realistic operation with adjustable delay. 12 LEDs. Great for model railroads, exhibitions, as a toy, ...

Specifications

  • low power consumption: 15mA

  • power supply: 9V battery (not incl.)

  • ON/OFF switch

  • dimensions: 2.0" x 1.4" x 4.5"

 

$12.20

QUIZ TABLE-MK133

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

  • with on-off switch

  • power supply: 9V battery (not included)

  • dimensions: 4.3" x 3.1" x 1.1"

 


$6.80

IR REMOTE CHECKER-MK137

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.

Specifications

  • low power consumption

  • power supply: 9V battery (not incl.)

  • dimensions: 2.2" x 1.2" x 1.3"

 

$15.00

HALLOWEEN PUMPKIN-MK145

Features

  • 25-LED bright-colored pumpkin-shape Halloween gadget

  • random flash effect simulates flickering candle

  • 1 extra high intensity yellow LED illuminates the pumpkin

  • on/off switch

Specifications

  • power supply: 9V battery (not incl.) / 20mA

  • dimensions: 4.0" x 3.2" x 1.3"

 


 $12.60

DUAL WHITE LED STROBOSCOPE-MK147

Features

  • two super bright white LEDs

  • powerful flash effect

  • great for party's, in scale models, as attention grabber, to observe moving parts, etc...

  • slow/fast selector and speed adjust trimmer

  • speed adjustable between approx. 1 and 60 flashes/second

  • on/off switch

Specifications

  • power supply: 9V battery (not incl.)

  • power consumption: 40mA max.

  • dimensions: 2.2" x 1.3" x 1.6"

 


$10.00

DUAL SUPER BRIGHT FLASHING RED LIGHTS-MK148

Features

  • 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 sensitivity

  • on/off switch

Specifications

  • power supply: 9V battery (not incl.) (12V possible)

  • dimensions: 2.2" x 1.3" x 1.6"

 


$ 22.40

LOVE TESTER-MK149

Features

  • check your love life !

  • each partners 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'-indication

  • flashing LEDs indicate you're a red-hot lover

  • wide sensitivity range covers the entire spectrum, from the cool to a steaming Latin lover!

  • power switch included

Specifications

  • power supply: 9V battery (not included)

  • dimensions: 4.1" x 3.1" x 0.98"

 


$12.80

SMD FLASHING HEART-MK144

Features

  • miniature size gadget

  • 6 LEDs flash alternately

  • can be operated pending (e.g. around the neck) or can be worn as a badge (pin supplied)

  • great attention grabber

  • ideal introduction to SMD (Surface Mounted Device) technology

  • some extra parts are supplied, in case some get lost or damaged

Specifications

  • power supply: 3V Li button cell (e.g. CR2025 or CR2032) (not included)

  • power consumption: 5mA approx.

  • dimensions: 1.9" x 1.7" x 0.3"

 


$12.60

SMD HAPPY FACE-MK141

Features

  • miniature size gadget

  • 2 LEDs flash alternately

  • great as attention grabber

  • ideal introduction into SMD (Surface Mounted Device) technology

  • some extra parts are supplied, in case some get lost or damaged

Specifications

  • power supply: 3V Li button cell (e.g. CR2025 or CR2032)

  • power consumption: 5mA approx.

  • dimensions: Ø1.1" x 0.3

 


$16.60

SHAKING DICE-MK150

Features

  • no push buttons required, just give it a shake

  • rolls out slowly and flashes last combination

  • microprocessor-controlled

  • auto power-off

Specifications

  • power supply: 3V-battery (CR2025 or CR2032) (not incl.)

  • dimensions: 1.4" x 1.4" x 1.3"

 



 $ 38.60

DIGITAL LED CLOCK-MK151

Features

  • clock with red 7-segment displays in an attractive enclosure

  • automatic time base selection (internal or net-frequency controlled 50/60Hz) Internal time base with fine-tuning adjustment

  • internal time base with fine-tuning adjustment

  • select 12h- or 24h-mode for the time display

  • equipped with backup battery (3 x AA) in case of power failure

  • clock still displays the time in case of power failure

Specifications

  • power supply: 9V AC/DC

  • dimensions: 3.6" x 1.8" x 4.0"

 


$7.20

WHEEL OF FORTUNE-MK152

Features

  • 10-LED wheel of fortune

  • 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

Specifications

  • power supply: 9V battery (not included)

  • dimensions: Ø2.6" x 1.3"

 



$36.80

JUMBO SINGLE DIGIT CLOCK-MK153

Features

  • gadget clock

  • time is displayed as a sequence of digits

  • bright 57mm jumbo red 7-segment display

  • complete with attractive enclosure

  • single button operation

  • 'blank display' function

Specifications

  • 12h system

  • accuracy: 30ppm

  • power supply: DC 9-12V / 150mA max.

  • dimensions: 2.9" x 2.3" x 1.3"

 


$14.40

MAGIC MESSAGE-MK155

Features

  • amaze your friends: wave the wand to make the message appear

  • the message seems to be floating in the air...

  • lots of built-in messages + enter your own 7-character message

  • applications: novelty gadget, in emergencies, at concerts or TV-shows, to welcome people, etc…

  • excellent visibility due to high intensity red LEDs

  • low power consumption

  • auto power-off

Specifications

  • power supply: 2 x AAA batteries (not incl.)

  • dimensions: 6.4" x 1.0" x 0.9"