Laser Time Writer
Writing with light

This is a MEMBER ONLY article. You need a subscription to read this article.
- Unlimited access to online Member Only articles
- 3 new editions Elektor Magazine (digital)
- More than 5000 Gerber files
- 20% member discount on e-books (at elektor.com)
- 10% member discount on Products (at elektor.com)
Available from €5.33 per month.
What is Members Only
Elektor is committed to providing high-quality content on electronics, catering to tens of thousands of paying members. As part of this commitment, Elektor has launched Premium, an initiative that offers exclusive online articles to members sometimes even before they appear in the magazine.
Every day, members can access in-depth articles that showcase the best of Elektor's premium content.
This initiative aims to reward members with early access. Once logged in, members can easily enjoy this exclusive content and engage in discussions about featured projects. While Premium adds to the existing resources available, Elektor will continue to provide a wealth of free information.
Join the Elektor community today to take advantage of Premium and other benefits!
Component list
160065-71 Sand Clock
160538-71 Laser Time Writer (upgrade kit)
Component List
Resistors
Default: SMD 0805
R1-R3,R11 = 220Ohm
R4 = 1.8kOhm *
R5-R9 = 4.7kOhm
R10 = 100kOhm
R12 = 2.2kOhm *
Capacitors
C1-C4 = 100nF, SMD 0805, MLCC
C5 = 10μF, 10V, SMD 1206, MLCC
C6 = 22μF, 16V
Semiconductors
D1-D3 = S2J-E3
T1 = BCX56
IC1 = DC/DC converter, SIP3, 5V/1A (Würth Elektronik 173 010 578)
IC2 = PCF2129A
Miscellaneous
K1 = set of pinheaders (1x10, 2x8, 1x6), 0.1" pitch
SERVO_Z, SERVO_L, SERVO_R = right-angle pinheader, 1x3, 0.1" pitch
B1 = battery holder, CR2032, with CR2032 button cell
1 pc Arduino Uno R3 or comparable
1 pc pushbutton, SPST, NO, 6mm mounting hole
1 set wires (red/black) and heat-shrink tubing
1 pc laser module, 405nm, 5-10mW, 12x35mm (eBay)
Mechanical
6 pcs machine screw, M2x10, Pozidriv/Phillips
6 pcs machine screw, M2.5x8, zinc-plated steel, Pozidriv DIN 7985A
2 pcs machine screw, M3x8, zinc-plated steel, Pozidriv DIN 7985A
15 pcs machine screw, M3x10, zinc-plated steel, Pozidriv DIN 7985A
6 pcs hex nut, M2, zinc-plated steel, DIN 934
7 pcs hex nut, M3, steel, DIN 934
3 pcs locking nut, M3, zinc-plated steel, DIN 985
4 pcs acorn nut, M3, chrome plated, DIN 1587
4 pcs spacer, 3mm height, polyamide, for M3
4 pcs hex spacer, 25mm, M/F M3, nickel-plated brass (min. total height 33mm, TME TFM-M3X25/DR213 or equivalent)
4 pcs spacer, 5mm height, plastic, for M3, outer diameter 6mm
1 pc brass tube, diameter 4mm x 0.5mm, length 35mm
4 pcs self-adhesive rubber foot
3 pcs micro servo, Tower Pro Tower Pro MG90S or MG90. metal gears
1 pc self-adhesive phosphorescent film, approx. 80x150mm (eBay)
Extruded (XT) acrylic sheet, 3mm, clear, laser-cut
* See text
Discussion (0 comments)