Using remote control for home appliances is a great choice. They can be used to on and off the appliances like TV, AC, DVD player, motor etc with the help of our TV remote. LED's can be used to on and off. IF LED1 is glowing, it means device is off and if LED2 glows than the device connected is on. This is a low cost simple remote control circuit is based on the CD4017 counter IC which receives trigger pulse from IR sensor and switch on the relay. Since, the device is connected to relay it is also switched on. Upon receiving the second pulse motor become off. You can control your toy car from 5 meters range.
This is a simple remote control circuit based on infrared sensor IC TSOP1738. TSOP1738 contains photo detector and pre-amplifier both in one package. It is a three terminal device. Pin 1 is for ground, Pin 2 is for power supply and pin 3 is used as output. Pin diagram of TSOP1738 is shown below. Take care while connecting the pins of TSOP1738. Wrong lead connection of TSOP1738 may lead to sensor damage.