Outmanoeuvred
Perfect parking with a reversing aid
Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD 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.
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Component list
Resistors
R1,R2,R3,R14,R15 = 100kOhm
R4,R7 = 22kOhm
R5 = 68kOhm
R6 = 220kOhm
R8 = 470kOhm
R9,R10 = 39kOhm
R11 = 2.7kOhm
R12 = 1kOhm
R13 = 1MOhm
R16,R17 = 4.7kOhm
R18 = 1.5kOhm
R19 - R22 = 330Ohm
P1,P2 = 100kOhm preset (Piher)
Capacitors
C1 = 100µF 25V, radial, lead pitch 2.5mm (0.1'') , diam. 8mm max.
C2 = 100nF MKT, lead pitch 5mm (0.2'') or 7.5mm (0.3”)
C3 = 4.7µF 63V, radial, lead pitch 2.5mm (0.1''), diam. 6.3mm max.
C4 = 470µF 25V, radial, lead pitch 5mm (0.2''), diam. 10mm max.
C5 = 100nF ceramic, lead pitch 5mm (0.2'')
C6 = 10µF 63V, radial, lead pitch 2.5mm (0.1''), diam. 6.3mm max.
C7 = 220µF 25V, radial, lead pitch 2.5mm (0.1''), diam. 8 mm max.
Semiconductors
D1–D4 = BAT85
D5–D24 = LED, 5mm, red, low current
D25 = LED, green, 5mm, low current
D26 = zener diode 3.6V, 1.3W
T1 = BC550C
T2 = BD139
IC1 = MCP6004-I/P (Farnell # 1605571)
IC2 = 78L05
Miscellaneous
K1,MOD1 = 3-pin SIL pinheader
K2 = 3-pin right angled SIL pinheader
MOD1 (not on PCB) = GP2D120 (Farnell # 9707859)
2 pcs PCB solder pin, diam. 1.3mm
3 pcs BPH-002T-P0.5S, JST BPH-002T-P0.5S (Farnell # 3617210)
PHR-3, JST PHR-3 (Farnell # 3616198)
Socket for 3-pin SIL header
PCB # 090184-1
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