# 1 Minute Timer Circuit

Published  July 14, 2015   60
J
Author

As the name suggest 555 timer is basically a “Timer”, which create an oscillating pulse. It means for some time output pin 3 is HIGH and for some time it remains LOW, that will create a oscillating output. We can use this property of 555 timer to create various timer circuits like 1 minute timer circuit, 5 minute timer circuit, 10 minute timer circuit, 15 minute timer circuit, etc. All we need to change the value of Resistor R1 and/or Capacitor C1. We need to set 555 timer in Monostable mode to build Timer. In monostable mode, the duration for which the PIN 3 would remain HIGH, is given by the below formulae:

T = 1.1 * R1*C1

So to build 1 minute (60 seconds) timer we need resistor of value 55k ohm and capacitor of 1000uF:

1.1*55k*1000uF

(1.1*55*1000*1000)/1000000 = 60.5 ~ 60 seconds.

A variable resistor of 1M is used here and set on 55k ohm (measured by multimeter). We can easily calculate the resistor value for 5 minute, 10 minute and 15 minute timer circuit:

5 Minute Timer Circuit

5*60 = 1.1 * R1 * 1000 uF

R1 = 272.7 k ohm

So to build a 5 minute timer circuit, we would be simply changing the resitor value to 272.7k ohm in above given 1 minute timer circuit.

10 Minute Timer Circuit

10*60 = 1.1*R1*1000 uF

R1 = 545.4 k ohm

Similarly to create a 10 minute timer we would be changing the resistor value to 545.4 k ohm.

15 Minute Timer Circuit

15*60 = 1.1*R1*1000 uF

R1 = 818.2 k ohm

As per above calculations, for a 15 minute timer circuit, we need the value of  resistor to 818.2k ohm.

We should note here that we have used LED at reverse logic, means when OUTPUT pin 3 is low, LED will be ON, and when OUTPUT is HIGH then LED will be OFF. So we have calculated OFF time above, means after the calculated time LED will be turned ON. LED will be ON initially (OUTPUT PIN 3 LOW), as soon as we press push button (trigger the 555 via TRIGGER PIN 2), the timer will start, and LED will become OFF (OUTPUT PIN 3 LOW), after the calculated time duration, PIN  3 will again become  LOW, and LED get turned ON.

Video

Have any question realated to this Article?

## Comments

Submitted by John on Tue, 10/13/2015 - 21:14

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### Sooooo, for how long does it

Sooooo, for how long does it remain lit up?

### As we have used 555 timer in

As we have used 555 timer in Monostable mode, it will remain ON untill the next trigger (button press). Here, ON state is Stable state and OFF is Unstable state.

Submitted by Cris on Thu, 01/21/2016 - 08:42

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### Can this be used to turn off

Can this be used to turn off a signal? ie. could I use it to turn off a switch instead of being ON.

### We have connected the LED in

We have connected the LED in reverse logic here. To Turn On the LED just connect the positive terminal of LED to PIN 3 of 555 and negative terminal to Ground.

Submitted by Ranjit N on Sun, 06/26/2016 - 08:53

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### 555 Timer

Dear Abhishek / Jayant,
I want the circuit to switch ON the LED / motor say once in 24 hrs and automatically switch OFF after (say) 30 secs or 1 min (after switching ON). How can this be achieved.

### 555 Timer IC is not reliable

555 Timer IC is not reliable for timers, greater then 10-15 minutes, you should check out IC 4060B for larger duration like 24 hours.

Submitted by BGS on Tue, 06/28/2016 - 14:32

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### 555 Timer -15 min Circuit

Hi, I tried the 15 min timer with the reverse logic(LED is off before the trigger is pressed,but as soon as I power the circuit,LED blinks and is OFF after that irrespective of trigger button being pressed.

Submitted by Sovatna PHON on Tue, 07/05/2016 - 08:37

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### 555 timer

Dear Developer,
Thank you very much for your explanation. It looks great to me, however, is it possible to make the blinking LED (OFF for 2min and ON for 50 sec)? I do not know how to circuit it. Please kindly help me.

Sovatna,

### Yes it can be achievable, you

Yes it can be achievable, you need to configure 555 in Astable mode and change the resistor R1, R2 and capacitor C1 accordingly, check here: 555 in Astable mode. There are lot of 555 calculator available online to calculate these values.

Submitted by jyoti on Wed, 07/20/2016 - 10:47

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### timer for 1 min

how to discharge battery after 1 min automatically

Submitted by Mansur on Sat, 07/23/2016 - 17:22

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### Timer circuit

It is a nice work. I would like to use the circuit to control an incubator, how do I go.abut it?

Submitted by Jr Burgess on Sat, 08/06/2016 - 08:09

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### Timer for ten minutes

Hi thanks for your time and effort to help other great job thank you . I'm looking for a timer 10 minute on and reset for 10 minutes ago so 10 on reset 10 off then back on in ten then reset for another around . I hope I'm. M a king Spence I'm a ham radio operator and we have to I'd our station ever ten minutes as long as we are on the radio.some people have burned a chip w I th there call sign I n it . But I could us flash ing red leads I'm not the best at stuff. Like this what do you think .. or a pick buzzer be better or b o th ? Tnx for ur time

Submitted by Tager on Thu, 08/25/2016 - 16:37

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### Driving a relay

Thank you for your work sir, Please I want to drive a relay instead of the
LED, can you help me?

Submitted by Tom on Tue, 08/30/2016 - 14:48

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### Really bad writing in this,

Really bad writing in this, thats not a LED symbol, you confused R1 with RV1

Submitted by ram on Fri, 11/11/2016 - 17:27

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### Timing for 30 minutes

I want to turn on my certain circuit for 30 minutes and after 30 minutes i want it to be off state. Does this circuit can sort out my problem. Moreover, I want the output of the timer circuit to be 14V, is it possible?.

Submitted by rj on Sun, 11/27/2016 - 22:11

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### light on

how to make a timer circuit in which the switch is triggered and the light remains on around 30 sec and off automatically

### Connect the LED in opposite

Connect the LED in opposite direction and make the timer of 30sec using given formula.

Submitted by seyyid on Sat, 12/10/2016 - 00:04

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### can i use it for 30 min?

hello,
can i use this circuit to make 30 min timer? or should i use another ic?

### For 30 minutes IC 555 is fine

For 30 minutes IC 555 is fine, but 555 Timer IC is not reliable for greater time duration you should check out IC 4060B for larger duration like 24 hours.

Submitted by mujey on Wed, 01/18/2017 - 19:39

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### 1 minute timer circuit

how to make a big display with led strips 1 minute with 12v. can you help with the schematic. digit length should be 12 inch hieght and 6 inch wide

Submitted by Henk on Fri, 01/20/2017 - 20:12

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### schematic error

Error in schematic, R1 must connect to pin 2 of the 555 to keep Trigger pin 2 high untill you push the switch!

Submitted by nikhil gour on Thu, 02/02/2017 - 14:50

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### for cooler

As we know that cooler have a water pump which is used to regulated the water from bottom to top.i want to create a timer circuit which is used to on off the pump at a time period of 1 min.a running pump off after 1 min it's on and again off after a 1min.,this process have still continue till the cooler is on...
It can we possible or not...

Submitted by Abhishek Goyal on Sat, 04/21/2018 - 13:46

In reply to by nikhil gour

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### Yes it is possible..

Yes it is possible..

Submitted by Jenny on Fri, 03/10/2017 - 18:33

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### I want an electronic timer

I want an electronic timer that will accurately time up to five minutes in one-minute steps before giving an audible (pulsing) or visual (flashing LED) warning that time is up.

Submitted by Cheery on Tue, 03/14/2017 - 14:43

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### Delay and reset circuit

Thanks for the wonderful post here. Please I want to build a timer circuit that will be activated by another circuit and the timer circuit should run for 5minutes before turning off automatically. A manual override can also reset the circuit to make it ready for another triggering. Please can I modify this circuit to achieve that? It's more like a delay circuit with automatic and manual reset. Thanks a lot in anticipation of your kind assistance.

Submitted by Deepak Singla on Sun, 04/02/2017 - 14:28

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### 555 Timer

I am using two relay in my circuit using 555 timer IC. is it possible that when i switch on the power and then after 30 second both relay will operate at once and after 10 second of that one relay goes off and other remains on
Please help me with this circuit..

### It is possible but circuit

It is possible but circuit will become complex, you may need to use 2 or 3 555 ICs and Op-amp, better use some Microcontroller.

Submitted by aman pradhan on Thu, 05/18/2017 - 00:39

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### applications

i want to know applications of one minute timer circuit.reply asap...thanks

Submitted by Muhammad Hamza Baig on Tue, 05/30/2017 - 12:06

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### help

Dear can i use it to control time for a washing machine or some more things like that

Submitted by Mike on Tue, 06/13/2017 - 04:58

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### 555 timer

There are flaws with the circuit, the 10K resistor top left is simply connected all the time between +9V and ground -ve rail thereby drawing power for no useful purpose, you need to connect 10K bottom leg to the pin 2 of the 555 timer, so that it is held at 9V+ through this 10k (pulled high) so when you push the switch then pin 2 goes low (-ve) to trigger.

secondly if you use bigger capacitors like 1000uF, your timings are going to be miles out, as there is usually very large leakages on higher the capacitor values are, so this circuit may not time if you use very large value capacitors, one should make sure the leakage current is less than the timing current through the variable timing resistor.

thirdly, when the timer trips, the large 1000uF cap will have stored so much charge on it, and all of it will be discharged when next arming the timer, this means all of that energy stored in the cap will dissipate suddenly when you press the button and can cause failure.

Submitted by Himanshu on Mon, 06/26/2017 - 10:15

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### led opposite work.

Can i make this led connected in a manner,so when i push the button it will be "ON" for 5 minutes.

Submitted by adi_stef on Thu, 07/06/2017 - 13:29

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### R1 connection

Hi,
Are you sure that R1 is connected across the Vcc and Gnd rails? I think one end should be connected to Vcc and the other one to Pin2, to keep it high, and when you trigger the pin, then you make the low trigger impulse connectig Pin2 to Gnd. No? Thank you

Submitted by randy on Sat, 11/04/2017 - 07:37

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### toggle timer

I need to make a circuit that when the switch is momentary pushed, it starts the timing circuit on for 15 seconds, however, if the same button is pushed again within that 15 seconds, it cancels the timer and turns the output off. push it again and starts the 15 seconds on again. so its using one switch to start and stop the timing circuit. i cannot seem to figure out how to do it using only one switch. can anyone help me?

Submitted by Gerald on Sun, 11/12/2017 - 01:41

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### I really love this and I need

I really love this and I need someone to put me through

Submitted by Muhammad Furqan on Fri, 11/17/2017 - 10:40

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### capacitor with control voltage

I saw in a book that a capacitor of small voltage is connected to control voltage. Is it necessary for the usage of 555 timer in monostable mode

Submitted by Ademola on Sat, 01/27/2018 - 02:44

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### What will happen to circuit

What will happen to circuit if the key is permanently closed?

### The timer will go on for ever

The timer will go on for ever. It will turn off after 1 minute once you open the key

Submitted by sreerag on Fri, 02/02/2018 - 10:16

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### Bug in the circuit

Hi in the above circuit provided, the resistor R1 should be connected directly to the pin.2 of 555.Then switch to GND from pin.2

Submitted by Thale on Mon, 02/05/2018 - 19:06

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### Hi, do you have a fully

Hi, do you have a fully component list.
What type of button do you use? And LED?
With spesification like how much current it can take before it breaks etc.

Submitted by Zoli on Mon, 02/19/2018 - 21:17

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### Every 5 min allarm

Hi. Maybe u could help me. This project is for an airsoft game. I need an alarm to go on every 5 minutes , and stay on for like 5-10 seconds.
Thank you.

Submitted by aykut on Tue, 04/24/2018 - 05:09

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### proteus problem

Unfortunality, We implemented this circuit design on Proteus/ISIS but it doesnt work :(
What is your suggestion?

Submitted by Don Baby on Wed, 06/06/2018 - 08:19

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### 5 minutes on 15 minutes off

I need to achieve 5 minutes on 15 minutes off.. How to adjust the off time

Submitted by Ekeji on Wed, 06/06/2018 - 20:23

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### timer circuit

Is it possible for me to make my timer circuit to be remotely powered? How

Submitted by Ayomide on Sun, 06/10/2018 - 21:59

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### How can I make a circuit that

How can I make a circuit that turns on after 25-30 minutes and stays on for 5seconds then turn on again after 5minutes

Submitted by Ronald on Wed, 06/20/2018 - 04:13

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### A little bit modified

Hi, thank you very much for this very helpful circuit. Can I ask a favor? Can you please modify the circuit so that it will use a series of LEDs, one for 1 minute, another for 3, for 5, for 7 and 10? Thank you very much in advance.

Submitted by Ranjith Ramesh on Thu, 07/05/2018 - 13:30

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### Circuit not working

I have tried this circuit, i have wasted more than 10 LEDs, then i have used an 1k resistor for the LED, then also the circuit is not working what can i do for it.......??????

### I need to make a circuit that

I need to make a circuit that i can put a timer on for 1,2,3,...,10 minutes then once the time is over whatever device is connected to the circuit will automatically shutdown/turn off. Is there anyway i can modify this circuit to match my needs?

### circuit error

It is bad form to leave the trigger input (pin 2) floating. It should be held high by R1. Then when you press the button pin2 will be grounded, starting the timing process. Move the lower connection of R1 to the right side of the switch.

### CIRCUIT NOT CORRECT

R1  10K RESISTOR IS CONNECTED BETWEEN +VCC AND GROUND TOGETHER WITH PUSH BUTTON SWITCH.

THIS IS WRONG.

R1   10K RESISTOR SHOULD BE CONNECTED FROM +VCC TO PIN 2 OF 555 IC, AND PUSH SWITCH SHOULD BE CONNECTED FROM PIN 2 OF 555 IC TO GROUND.

THE CIRCUIT WORKS THIS WAY

### 10 minute timer

I changed to the 545.4 resistor to try and make the timer 10 minutes but it is still only lasts one minute. Is there something else I should change? Maybe the capacitor? (I'm using a 1000uF)

### I want a circuit that will

I want a circuit that will delay before turn on permanently. And also a circuit that will turn on for some seconds and turn off permanently.