Traffic Light Circuit Using | 555 Timer IC | Led Projects.

Simple Traffic Light Circuit using Two 555 Timer IC.

Components Required :
555 Timer IC x 2 Nos
100uf Capacitor x 2 Nos
100k Resistor
47k Resistor
390 Ohms Resistor x 2 Nos
330 Ohms Resistor
Breadboard
Connecting Wires

[Mopki]

Thank you for showing this. I have looked for, and seen dozens of traffic lights, but they don't change lights in the right order or timing. I kept thinking, It has to be possible without software. You did it. Thank you.

[LosBROSPQR]

For anyone that this circuit didn't work, try the following: instead of doing 1:00 from pin 4 to rail, try placing 4 to 8 on the same timer. I did this and the circuit suddenly started working.

[WincitO]

It works better than my city traffic lights xDDD

[Emm-iz]

For everyone whose lights are not operating properly, the circuit diagram has a problem. The resistor should be connected with the pin 3 of second IC and then the anode of green led. That is the mistake in the circuit. In the circuit diagram, resistor is connected to the ground at the end, which is wrong. Also I used 470 ohm with red led, 220 ohm with yellow led and again 220 ohm with green led.I hope it helps, best of luck.

[leeroberts]

Here in the UK when going from red to green you have red and yellow together when going from red to green (Red > Red & Yellow together > Green). The other variant is if it's a pedestrian crossing, where it might be (Red > Flashing Yellow > Green)

[adamv]

Very nice. I'm going to have to breadboard this myself.

[foreverkenzie]

Tips for doing this but with timed relays outside the bread board?

[zkjona]

bro do u know how to calculate the resistor and capacitor for this times?
green: 4 sec yellow: 1sec red: 3sec

[reeeigncabatbat]

Can we have the simplifications for this project, like the truth table and K-maps?

[myrrhhhh]

A modified version of this would be really cool in a miniature build or something.

My art hobby and electric engineering hobby parts of my brain are becoming friends and it's scary.

[SH-yihk]

Excuse me, what causes the first lamp to turn on, the second to turn off, the third to turn off, the second to turn on, and the first to turn off, and the third to turn off?

[yazantahan]

sir i did connect the circuit the only proplem green light didn't glow why

[BareenaDeshmukh]

What to do if red and yellow led are glowing together???

[HarpoVicky]

Can we add 7 segment display here?? If possible kindly say the instructions

[raghabbasnet]

Does the resistor need to be specific?

[Yashu_mm]

Bro I connected the circuit (copied every instruction) 8th time still I'm not getting the proper output, my led is not glowing, can u pls help me with this .

[lonewolf]

Is it advisable to use a 9 volt battery instead?

[maiatomas]

much cool if this have a 7 segment display

[forge]

late to the video, but i don't understand why do we use a resistor between output (pin 3) and threshold (pin 6)?

[KartikPatel-ntff]

😅😮😅😅😅well ingormeti0n.Good show more 😅😅