About the article

R/C Analyser

a digital tachograph for R/C model cars

R/C Analyser
This R/C analyser measures and stores the speed of an R/C model car directly in the car. It is aimed at R/C model car builders who want to know how fast their models can go ‘on the road’. The R/C analyser measures the speed of a model vehicle. The speed is measured directly in the R/C vehicle, rather than being computed from the number of laps and elapsed time. This means that the speed, and in particular the top speed, can be determined for individual curves and straightaways. The average lap speed is also obtained as a ‘by-product’.
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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.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Component list
R1 = 10kOhm
P1 = 10kOhm preset
C1-C6 = 1µF 16V radial
D1 = 1N4148
IC1 = PIC16F627-4/CP, programmed, order code 030178-41
IC2 = LP2950CZ-5.0
IC3 = MAX232CP
JP1,JP2 = 3-way SIL pinheader with jumper
K1 = 9-way sub-D socket (female), angled pins, PCB mount
K2 = 14-way SIL pinheader
K3 = LCD, 2 x 16 characters with flatcable and 14-way IDC connector
K4 = 3-way pinheader
S1 = pushbutton, 1 make contact (Conrad Electronics # 704849-8B)
X1 = 4MHz ceramic resonator with 3 pins and internal capacitors.
PCB, available from The PCBShop
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