- on Microcontrollers
- Published in issue 4/2003 on page 0
microcontroller or Programmable Logic Controller?
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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-R8 = 1k?8
R9-R16 = 680?
R17,R36 = 4-way 4k?7 SIL array
R18-R25 = 10k?
R26 = 1k?
R27 = 7-way (or 8-way) 10k? SIL array
R28 = 3k?3
R29 = 330?
R30 = varistor 30V, 600mW, diameter 15-17 mm (e.g., BCComponents # 2322 5953006)
R31-R35 = 4k?7
R37 = 10k? (4k?7)*
C1,C3,C4,C7 = 100nF ceramic
C2 = 22pF
C5 = 47µF 16V radial
C6 = 47µF 35V radial
B1 = B80C1500 (80V piv, 1.5A), in round case
D1-D8,D17,D25-D29 = 1N4148
D9-D16,D20-D24 = LED. low current
D19 = 1N5407
IC1 = PIC16F84A-04/P
IC2 = 74LS151
IC3 = ULN2003
IC4 = 78L05AC
IC5-IC8 = LTV847 (Liteon), ILQ621 (Infineon) or PC847 (Sharp)
K1 = 10-way boxheader
K2-K9 = 3-way PCB terminal block, lead pitch 5mm
K10-K14 = 3-way PCB terminal block, lead pitch 7.5mm
K15 = 9-way pinheader
K16 = 6-way pinheader
RE1-RE5 = relay, 16 A/250 VAC (Finder # 40.61, coil 12VDC, 220?; or Omron # G2R-1-E 12VDC; or Schrack # RP310012)
PCB, order code 010059-1
Disk, test program, order code 010059-11 or Free Download