Lighting and Gearbox Control
for remote-control model lorries
Published in issue 306, January 2002
The circuit described here uses a PIC microcontroller to take over the complete control of the lighting and gearbox in a model lorry. It can also be used with a fork-lift truck, excavator or similar type of vehicle.The problem with these kinds of remotely controlled vehicles is that they have a large number of functions, which normally means that an expensive remote-control unit must be used. The project presented here consists of a small printed circuit board, featuring a microcontroller from the popular Microchip PIC family, which looks after the extended functions. This involves a combination of automatic function control and the decoding of supplementary functions.
Resistors:
R1-R9,R20,R34,R35 = 2kOhm 2
R10,R12,R21,R32,R33 = 100Ohm
R11,R13-R19,R22 = 10kOhm
R23-R31 = 1kOhm 2
P1 = 10-turn preset, horizontal mounting
Capacitors:
C1,C2 = 22pF
C3,C5 = 100nF
C4 = 10µ F 16V radial
Semiconductors:
D1-D9,D11,D12 = LED, 3mm, red, high efficiency (low current)
D10 = LED, 3mm, green, high efficiency (low current)
T1-T9 = BC817
IC1 = 4051 SMD
IC2 = PIC16C57, programmed, order code 010204-41
Miscellaneous:
JP1 = 2-way pinheader with jumper
K2,K4-K7,K9,K11 = servo connection cable
K1,K3,K8,K10 = 3-way pinheader
K12,K13,K14 = 5-way pinheader
X1 = 16MHz quartz crystal
PCB, order code 010204-1
Disk, project source code files, order code 010204-11
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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