- on Computer/Software/Internet
- Published in issue 3/2003 on page 0
COM Port Tester
With 3 LEDs and 4 switches
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CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.
R1,R2,R3 = 2k?2
R4-R8 = 10k?
D1 = LED, 3mm, green, low-current
D2 = LED, 3mm, yellow, low-current
D3 = LED, 3mm, red, low-current
K1 = 9-way sub-D socket (female), angled pins, PCB mount
S1-S5 = slide switch or rocker switch, 1 make contact
9-V battery with clip-on leads
PCB, available from The PCBShop
Disk, project software, order code 020388-11