Breadboard Circuits Tutorial - 555 Police Lights 

Thanks for explaining the 555 timer

Excellent tutorial! I’m glad I’m not the only person who doesn’t know why pin 6 and pin 2 are connected. It just seems like a part of life 😀

Beautiful clear video. You are a gifted teacher. Thank you.

Excellent share. thank you for this I shall prepare it with my 7 year old daughter as her first tuturial to Breadboard

Nice video, thanks for sharing it with us, well done :)

Thanks so much. Very helpful and clear

The rst(reset) pin of the 555 timer is active low, meaning when you connect the rst(pin 4) to ground(-supply voltage) the 555 is locked into the reset mode. Generally one connects pin 4 to +supply voltage(pin 8) to make certain it won't drift low with electronic noise present in the environment. Also the datasheet recommends a small value capacitor, 0.1 uF, or 100 nF, between pin 5 and ground if you won't require the CTRL function, for the same reason. Neither is required in most instances for a standard 555 IC, but becomes more important for the low power CD7555 CMOS IC. Otherwise well done.

I want to do a traffic light situation but with like several rows of it being led lights green, then yellow then red. How would I go about this and I also need to use timed relays.

Thank you for this easy to follow 'monkey see, monkey do' tutorial, it's my first time using a 555 timer and literally brightened my day when it all worked, I appreciate you sharing your knowledge :)

Most versions of this circuit connect the capacitor to positive supply not pin 3. And you don't have the capacitor connected through a resistor to pin 7 to discharge.

I tried it

You connected to pin 7 instead of pin 6 threshold in one of the steps

your awsome

Capacitor negative always in whait line marks

Please include a picture of the circuit diagram in the beginning.

This is fantastic. The only missing detail is to note that the Red and Blue LEDs operate on different voltages. I was using two reds and got wonky results. Red operates on about 2-3 volts, blue is about 5 volts. 100uf capacitor was a really slow blink, but 10uf was an easy swap.

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Priddy gudd

Your videos are great and the little animations thing you added was a very big move but I think you should also le us see the schematic representation of the connections you are doing so we can understand clearly. Some of us are struggling with Basic Electronic course. Thank you😊

what is the value of capacitor

If i want to light two blue and two red leds how can i connect them?

Maybe should have clarified when your connecting to board pins or chip pins. Kinda got confusing but over all good vid

I did this, only the blue light is on(not flashing) red one is off, even tho I copied the whole layout

What size of the resisor were used?

resistor and capacitor values?

What is the value of resistor ??

Circuit diagram please 🥺

𝓦𝓱𝓪𝓽 𝓲𝓼 𝓽𝓱𝓮 𝓿à𝓵𝓾𝓮 𝓻𝓮𝓼𝓲𝓼𝓽𝓸𝓻

Haha, it didn't work as it should have 😮

You're teaching to build a circuit on a live board!!. You should only connect the power when the circuit is built. Terrible teaching

Excellent tutorial! I’m glad I’m not the only person who doesn’t know why pin 6 and pin 2 are connected. It just seems like a part of life 😀