555 Timer in Monostable Mode

Kindly I ask you how to connect relay for such circuit best regards

Thums up 👍

Can we use ne 555 as vr conditioner arduino ? Like max 9926 vr conditioner speeduino ?
Thank you

Will it turn off even if you still press the button?

does it stays on if I hold the button or it still turns off after x seconds?

thanks sir its also called time delay circuit.

I want to thank you for all of these videos. Could this be used for a counter trigger with a 4026 or two if the pulse were very short? I've been studying building one and this seems to be a similar circuit to some of what I see. One question I have is I see counters built using a 555 and some built with just a switch (debounced) straight from Vcc to the trigger pin. Will either work and what would be the advantage to one over the other?? More stable pulse/counting?? I'll guess I'll build and test them - that's the fun of electronics anyway.. Thanks again - Jay.

What if push is continiously ON

Hello. I hope you are still up to reply on questions.

I am curious what will happen if you press the button every 3 seconds? keeping in mind the the timing off is 10 seconds.

Is repeatedly pressing the button every 3 seconds will make the LED bulb lit? then what will happen if I stopped pressing.

Thank you!

I would like to know what happens if you hold the button down for more than 10 seconds, i.e., the time expected to turn off.

You make great tutorials! I like how you draw the schematic to show how it all works.

I am trying to figure out the function of each pin on the 555, and the only one that confuses me is pin 7. It’s called the “discharge” pin (for a capacitor), but I don’t know if the current is flowing TO or FROM the capacitor and the 555. If anyone knows, please let me know. Thanks!

Make an automotive coil igniter. 3ms

Very important information.

Great video! I have a question, I want to use it to activate it on a square wave signal of 1000Hz, and I set the timing to be a bit longer then one one full wave. That works, but I want the output to remain high as long as the square wave signal is active (so the 555 needs to retrigger when it is in the on state). Now the output goes low for a short moment, and then is retriggered again... Hope you can give some advice!

Can we use this to control servo motors?

Amazingly useful video, as always! 👍 Can you please explain what is the value of the resistor on Pin2 and why it is needed? Why not just a switch? Thanks Mate!

What happens if you don't tap the button long enough for the cap to discharge? There is no current limiting so it's unlikely, but if you tap the button VERY quickly, a big cap may discharge to, let's say, 70% of Vcc as soon as you let off the button, Threshold (6) is still high enough to reset, and the the cap begins charging again.

Works great thanks for sharing Artie

Excellent video Paul ( i do have your name correct if not please let me know ) Now on to building it

Thanks for the video, but just showing ho things are connected doesn't mean much. Monkeys can copy but not understand. Anyone who needs to know the basics shown here wouldn't understand how they work...which is the important part to thinking/solving on your own.

I need a 1-2 sec power only need help!

Thanks for making this neat turorial. An ideal learning project for a rainy sunday afternoon in quarantaine :) 555 is so freakin cool!

So...i took the resistor off of pin 8 to 7 and it still lights up. Will it just stay on?

What is your Vcc and what is the size and point of the capacitor across Vcc and ground?

i don't see the pin 5 capacitor

Trying to get my head around 555 timers for a project; is there a way to make it single use? As in, Press button once, alarm sounds for 30 seconds and then will not activate again until power was reset or via another switch? Would also like to have an LED be activated and remain on as a visual indicator that the alarm had gone off. Any help would be greatly appreciated.

Hi there I would like to build a circuit timer to switch on and off a fan 30 minutos at the time,what resistance and capacitor size I should use. Many thanks for your help

very good sir,
🙂

Awesome video! Just had a few questions though. What is the purpose of having a resistor connected to your button? Also, how do you determine what size of resistor to use there?

Great video! Im looking to play around with this type of circuit so this helped alot. Im just wondering what ohm resistor you used to go from pin 2 to Vcc

What is going to be the configuration of resistor & capacitor for micro seconds

I'd like make three of them, wired in sequence. When the first one turned off, it would trigger the second one, (duplicate but with different time light is on), when it turned off it then would trigger a third one with yet another time; When the third one turned off, it would trigger the first one and keep repeating until I manually turned off the power source. Any links on how to connect for this array. US electrician, but newbie to electronics. Thanks in advance. logan PS. I would then use a relay on each one to 110v AC. instead of the mini "diode"? test light, that part I've done before on an analog version, to light up some xmas tree lights.

Thank you great info! Any chance you could show me a variable timer, using a potentiometer?... I’d want it to run a pump for different amounts of times and if need to adjust it regularly ? Thanks!

Hi, what if I need to have it on for 20miliseconds, that's faster than I can press the button, it then seems to stay on for as long I pres the botton

well, it helped me a lot

Thanks man.
I want to turn a relay on for 20 mins and another for 30 mins. What to do or how should I calculate/select the capacitor & register?

What would i need to run one for 4 seconds and one for 7 seconds?

Im new to electronics, and dont get how to calculate this.

Just received my delivery of 555s, so will be playing around following your related videos, thank you! I assume you could use a pot to vary the time on/off, or would it need to be a variable cap? ... 👍🏻 🐍

Haha, just found what I was looking for. Thanks, subcribed. Great videos. Love it. :)

Thanks bud. Just what I was looking for..trying to find a timer circuit to turn on a fan for my power supply when the temp hits a certain temp...Problem is the fan will only turn on for a second before the temp is brought down a degree..Then it repeats. Now I can just have it run for a certain amount of time

You've convinced me! I just bought 10 555's. Can this circuit be inverted, say to turn off for a certain amount of time? Great video's, I'm still catching up though.

The RC time constant is pretty reliable dependent on temperature.

i wonder how accurate the timing gets when you time it for days