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Model Remote Control

using an IR remote controller

Model Remote Control
If you thought that an infra-red (IR) controller was only good for zapping TV channels then read on. This novel circuit uses a micro controller to decode RC5 format IR signals and put them to a better use...This compact circuit is designed to allow a model car, boat or robot etc. to be controlled from a handheld remote controller that would normally be used to control a TV, audio amplifier or satellite receiver. The only requirement is that the IR remote controller must send control messages using the RC5 format.At the heart of the circuit is a COP8782 micro controller from National Semiconductor, this interprets the infra-red signals and sends out proportional signals to control a model servo for steering. It also has a MOSFET bridge circuit to drive a motor for forward, stop and reverse functions.
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Gerber file

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.

Resistors:
R1,R3-R6 =100kOhm
R2 =1kOhm 2
R7 =1MOhm
R8 =100Ohm
Capacitors:
C1,C5,C6 =100nF
C2,C3 =33pF
C4 =10µF 16V radial
C7 =100µF 16V radial
Semiconductors:
D1 =1N4148
D2 =LED, red, high efficiency
D3-D6 =1N4001
T3,T4 =IRF530N (Conrad Electronics # 158747,Farnell #637-439)
T1,T2 =IRF9Z34N (Conrad Electronics # 159166, Farnell # 934-677)
IC1 =COP8782, programmed, order code 000160-41
IC2 =7805
IC3 =TSOP1736 (Conrad Electronics # 171069),
SFH5110-36 (Siemens), PIC26043SM (Farnell # 139-877), IS1U60 (Sharp) or TFMS5360, see text
Miscellaneous:
X1 =10MHz quartz crystal
K1 =3-way pinheader
PC1,PC2 = solder pins
K2 = 2-way PCB terminal block, lead pitch 5mm
PCB, order code 000160-1
Disk, contains source and hex files, order code 000160-11
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