How To Make 9V RC Police Led Flash Light. NE555 DIY Flasher
In the picture below, you can see a schematic diagram of a simple LED flasher with two popular NE555 ICs.
Both 555s operate as an unstable flip-flop, each with a different frequency. Their outputs are connected in anti-parallel two groups of LEDs. The frequency and character of the flashing can be adjusted by changing the values of C2, C3, R2 and R3.
R3 and C3 affect the flash rate, R2 and C2 affect the color switching rate.
You can also use a different number and color of LEDs, but you need to adjust the value of R1 to not exceed the maximum LED current. The current must also not exceed the maximum output current of the 555 circuit, which is 200mA. The circuit can be powered from any 12V source (9-15V).
How To Make 9V RC Police Led Flash Light. NE555 DIY Flasher
In the picture below, you can see a schematic diagram of a simple LED flasher with two popular NE555 ICs.
Both 555s operate as an unstable flip-flop, each with a different frequency. Their outputs are connected in anti-parallel two groups of LEDs. The frequency and character of the flashing can be adjusted by changing the values of C2, C3, R2 and R3.
R3 and C3 affect the flash rate, R2 and C2 affect the color switching rate.
You can also use a different number and color of LEDs, but you need to adjust the value of R1 to not exceed the maximum LED current. The current must also not exceed the maximum output current of the 555 circuit, which is 200mA. The circuit can be powered from any 12V source (9-15V).
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