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Laser Time Writer (Kit | 160538-72)

Laser Time Writer (Kit | 160538-72) This new kit is a variant of Elektor's earlier published sand clock.
Instead of writing the time in a layer of sand, it uses a laser module to plot the time onto a piece of glow-in-the-dark sticker material.
The afterglow time of this phosphorescent material varies with ambient light conditions.

Prix 135,00 $US

Prix réduit 90,00 $US


Ce produit sera expédié dans 4 jours


The original design of the sand clock was modified to fit a laser module running on 3-5 V. A push button allows starting the time writing sequence at will rather than at a preset interval.

Additional to the push button, a PIR sensor triggers a writing sequence every time a person is detected in front of the clock.
An acrylic stand holds the clock in an upright position for use on a desk. The mounting holes in the base plate allow also for wall mounting if preferred.

The kit comes with all parts required: all acrylic parts assembled in three pre-cut plates, an acrylic stand, glow in the dark sticker material, laser module, three servo motors, an Uno R3 + shield, PIR sensor, pushbutton, wire and heat shrink tubing, brass spacer, a power supply, USB cable and small mounting hardware.

The software for the laser plot clock is available as an Arduino sketch for download. For programming the Uno and first-time calibration of the servo motors you need a computer with the Arduino IDE installed. A detailed construction manual is available for download.


  • 3x Precut acrylic plates with all mechanical parts
  • 1x Acrylic stand which holds the clock in an upright position
  • 1x Uno R3
  • 1x Arduino shield with preassembled SMD parts
  • 3x Servo motors
  • 1x PIR sensor, holder, and mounting hardware
  • 1x 5 mW violet laser module
  • 1x Glow in the dark sticker material
  • 1x Pushbutton
  • 1x 9 V 1 A power supply
  • 1x USB cable
  • Wire and heat shrink tubing
  • Nuts, bolts, spacers
Réf. 18526
Constructeur Elektor Labs
Référence de rédaction 160538-72


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