Everyone like to build LED Knight Rider circuits, specially beginners and little kids. So I will post some knight rider circuits and you can find different pattern of the knight rider circuit from here.
LED Knight Rider 1
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| Pattern 1 Preview |
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| Pattern 1 Circuit |
In this circuit LED is running one by one from D1 to D10. after D10, its star from D1 and this will continue until power is disconnected.
LED Knight Rider 2
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| Pattern 2 Preview |
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| Pattern 2 Circuit |
In this circuit LED is running two ways. in first step D1, D3, D5, D7 and D9 is light up one by one and the D10, D8, D6, D4 and D2 is light up one by one after D2, its star from D1 and this will continue until power is down. this is more similar to the circuit of Knight Rider TV Series. how ever this circuit doesn't display a tail like circuit in tv series. if you like to add tail then simply add capacitors between every LED. the value of capacitor depend on input voltage and type of LED. so i can't give a value for capacitor. therefor you have to chosen your own value for this by adding different capacitors from 10-220uf. however i think 47-100uf is good for this.
LED Knight Rider 3 - Shadow
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| Pattern 3 Preview |
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| Pattern 3 Circuit |
This is the same circuit of pattern 1 and only change the polarity of LED. after power is given all the LED s are light up except D1. next all the LED s are light up except D2. this will continue until D10 off. after that it begin with D1 and this will repeated until power is applied. This method also can applied to the pattern 2. RV1 used to change speed of scrolling. Supply Voltage is 5-12v. Change the R1 resistor to 470-1k when you used power supply above 5v.
4017 is a synchronous decimal up counter with decimal-decoder. it count when the signal is applied to the CLK (pin 14).
The NE555 is a highly stable device for generating accurate time delays or oscillation and used to generate clock pulses for 4017.
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12 Comments
On the LED knight rider 1, what is the voltage?
ReplyDeleteSupply Voltage is 5-12v
DeleteYou forgot to add pin 16 on the 4017. Which is VCC
ReplyDeletesupongo que el mismo del 555
DeleteOn the LED Knight Rider 2 what is the voltage? What is the value of the resistor marked 110R. I know R is not a value
ReplyDeleteSorry. that resistor is 100R. Not 110R. It ties all of the LED's to VCC.
ReplyDeleteI'm assuming its either a 100 ohm or 100K ohm.
ReplyDeleteNo model specified for RV1 hence simulation failed due to partition analysis error. Kindly help me out
ReplyDeleteSearch for POT or variable resistor. Or you can replaced it with fixed resistor
DeleteDude; this is NOT the KNIGHT RIDER CIRCUIT! This is an LED CHASER CIRCUIT! Please CORRECTLY label it as such. I was really bummed out when I finished and it just chased; didn’t “return”.
ReplyDeleteDude; this is NOT the KNIGHT RIDER CIRCUIT! This is an LED CHASER CIRCUIT! Please CORRECTLY label it as such. I was really bummed out when I finished and it just chased; didn’t “return”.
ReplyDeleteDude; I built this thing after looking at others and thought this one looks WAY cleaner and simpler than those OTHERS.. BUT ITS NOT THE KNIGHT RIDER PATTERN!! (Which, YES, was what I was going for!) Label it CORRECTLY, PLEASE! The ones that DONT go BACK AND FORTH, tail or not, are LED CHASER CIRCUITS; NOT(!) KNIGHT RIDER CIRCUITS..
ReplyDelete