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The toy car circuit controlled by the color TV remote contro

2017-01-15 05:20  
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The toy car circuit controlled by the color TV remote control
I reinstalled a toy car which can be used by the color TV remote control, the circuit is shown in the figure. P10~P17 connect with the lighting pipe as the 8-gear display; P3.5 and P3.7 control the advance of retreat of the motor, and the two can be in the low LEV at the same time, and they output a PWM square wave whose period is 80mS. The triode power is decided by the motor current. The keys of + and - control the heading direction, the sound volume key is used to control the speed, the power supply key is to control the pulling over of the toy car. The control distance is 18 meters, and it can be shaded by furnitures.