I need to design simple pwm circuit with 555 timer and pir sensor n motor?

i really need a solution for this.most of the answers i received needs programming.i don't need programming but just design it.the function is to make the motor move when pir sensor sense the body heat,say the motor move in linear motion at normal speed but it slows down once the pir sense the body heat.

Answer:
You'll find your circuit at the link below. You didn't say that you had a servo motor, and didn't mention direction, so I'm assuming DC. If it's just a little DC motor, that schematic will set you up nicely.

If you *are* working with a servo, you can blow off the MOSFET driver and diode, and just use the PWM output from Pin3 to drive the servo motor driver. You'll want to drop the output to the appropriate (probably 5V) level, though, through a two resistor divider (in place of R3). 6.8K goes to Pin3, 5.1K goes from the 6.8K resistor to ground, and the tie point between the two goes to your servo input.

http://www.uoguelph.ca/~antoon/circ/pwm5...

Having no idea what sort of output you're getting from your PIR sensor (many are binary output - "on" if an IR level shift is sensed), I can't tell you how to get it wired into this circuit. This circuit is designed for variable resistance to control the output, as are most 555 timers.

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I need to design simple pwm circuit with 555 timer and pir sensor n motor?

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