IR Light Barrier Kit MK120

Infrared (IR) Light barrier electronic kit MK120 uses an IR transmitter emitter to project a beam of infrared light to an IR receiver detector. The IR light beam is used to monitor a doorway, a pathway, an area, a conveyor, etc. for the arrival or presence of a person or object. A buzzer on the detector loudly announces and alert when the IR beam is broken by a person or object traversing through it.

• audible (85db) and visible (LED) alert
• range: 3.3ft. to 13ft. (1 to 4m)
• on/off switch provided
• power supply:
  • transmitter emitter: 9Vdc, 50ma max.
  • receiver detector: 9Vdc, 20ma max.
  • 9V battery holder and power adapter jack included.
• Dimensions:
  • IR transmitter: 2.2" x 1.6" (5.5 x 4cm)
  • IR receiver: 3.9" x 2" (10 x 5 cm)
• not recommended for outdoor use

Quantity:  1 to 9 $6.89 10 or More $6.29

TV Ping Pong Game Kit MK121-NTSC

Play a classic TV game like Pong. This mini-kit provides hours of fun. Video and audio outputs provided. One player mode has 4 selectable difficulty levels. Two player mode: press RESTART. Press both move buttons to "smash" or to start serve. Only the server can score points. Operates on 3 AA 1.5V batteries (not included).

• video and audio outputs included
• adjustable brightness
• auto power off to preserve batteries

Quantity:  1 to 9 $16.49 10 or More $14.99

Rolling Clock Electronic Kit MK123

Skill Level 2 (~150 solder connections). Nicely animated rolling time and date display. Graphic display with 35 LED's. 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.

• Power supply: 9-12V DC adapter or car battery.
• Current consumption: 20ma max.
• Backup battery: 9V block type 6LR61 / 6F22
• Dimensions:  1.8" x 3.5" x 2.6"

Quantity:  1 to 9 $14.39 10 or More $12.99

Kitchen Timer Kit 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.

• 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 included)
• power consumption: 10mA typ.
• dimensions: 3.1" x 3.0" x 1.3"
  Kitchen Timer Manual.pdf (295kB)

Quantity:  1 to 9 $16.29 10 or More $14.79

Traffic Light Kit MK131

Miniature traffic light as used on four-way intersections. Realistic operation with adjustable delay. 12 LEDs. Great for model railroads, slot car tracks, exhibitions, or just as a toy. User assembly and soldering required.

• low power consumption: 15mA
• power supply: 9V battery (not included)
• ON/OFF switch
• dimensions: 2 x 1.4 x 4.5"

Quantity:  1 to 9 $6.69 10 or More $6.09

Train Sound Generator MK134

Train sound generator MK134 creates the sound of a vintage steam engine with a train whistle. Adjustable train engine speed and volume. Great for model railroads, steam engine whistle sounds at the push of a button. Train steam engine sound generator with whistle MK134 is an electronic kit. User assembly is required.

• power supply: 9V battery (not included)
• comes with 8 ohm/0.5W miniature speaker
• dimensions: 3.9" x 3.3"
• ideal for model train railroad hobbyists

Quantity:  1 to 9 $10.29 10 or More $9.29

Decision Maker Kit MK135

Helps make difficult decisions. Ideal for the indecisive. Push the button to start the flashing of Yes/No LED's. Flashing speed gradually slows and finally only one LED remains lit, indicating the decision.

• low power consumption 1µA idle / 8ma in use
• auto power off
• power supply: 9V battery (not included)
• dimensions: 2.2" x 1.2" x 1.4"

Quantity:  1 to 9 $5.69 10 or More $5.19

Karaoke Electronic Kit MK140

Skill Level 2 (~120 solder connections). Sing along with your favorite music. Hook-up this unit between your CD-player, MD-player, or any other line level source and your amplifier. RCA (cinch) input and output sockets. With ¼" microphone jack, fits most microphones. Adjustable microphone level. "Vocal reduction" - switch reduces original vocals on most stereo recordings. On/off switch and LED power indication.

• Power supply: 9V battery (not included)
• Low current consumption: 16ma typ.
• Dimensions:  3.9" x 3.3" x 1.0"

Quantity:  1 to 9 $12.79 10 or More $11.59

LED Strobe Light Kit MK147

Two super bright white LED's provide a continuous and adjustable powerful flash effect. Great for parties, attention grabber, or viewing moving parts, etc. Adjustable between 1 to 60 flashes per second.

• power supply: 9V battery (not included)
• power consumption: 40ma max
• dimensions: 2.2" x 1.3" x 1.6"

Quantity:  1 to 9 $8.95 10 or More $8.09

Electronic Shaking Dice Kit MK150

Skill Level 1 (~56 solder connections). No push buttons required, just give it a shake. Rolls out slowly and flashes last combination. Microprocessor controlled. Auto power off.

• Power supply: 3V battery (CR2025 or CR2032) (not included)
• Dimensions:  1.4" x 1.4" x 1.3"

Quantity:  1 to 9 $11.49 10 or More $10.45

Digital LED Clock MK151

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, 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, power supply: 9V AC or DC adapter (not included), low current consumption: 16ma.

• power supply: 9V AC/DC
• dimensions: 3.6" x 1.8" x 4.0"
• recommended adapter: -
• LED Clock Manual MK151.pdf (602kB)

Quantity:  1 to 9 $29.95 10 or More $27.19

Wheel of Fortune Kit MK152

Push the button to start the spinning action (circular sequence of lighted LED's). Rotation speed gradually decreases and stops with one LED remaining lit.

• auto power off
• low power consumption
• 10 LED's
• power supply: 9V battery (not included)
• dimensions: Ø2.6" x 1.3"

Quantity:  1 to 9 $5.89 10 or More $5.39