Hello,
I am attempting to make a delay ON 555 Timer circuit by using a relay.
I used the above circuit and it works, but this is my desirable final outcome:
1) LED OFF
2) Push Button - LED Still OFF
3) Wait around 8 seconds
4) LED ON

This circuit above produces the exact same steps I listed, but instead 1) LED ON. I just want to change it to 1) LED OFF.

Not sure if this link will work, but here it is in action:
https://drive.google.com/file/d/1wfAj86n6-9tYpJ-JQA7Ott-sYF0bAaN0/view?usp=sharing

This circuit will be used to drive a motor (the LED represents a motor).

I'd appreciate all the help.

 

Welcome to AAC!

This circuit above produces the exact same steps I listed, but instead 1) LED ON. I just want to change it to 1) LED OFF.

Drive the LED high side instead of low side.


If that doesn't do what you want. Add an inverter to drive the LED low side in the original circuit.

 

That logic doesn't add up. You can't have #1 and #4. At least not without some additional components.
The LED is either ON or OFF while the relay is activated and vise versa.
When at step #4 how long the does the LED stay ON until back to step #1?

 

Edited: forgot to mention it is in steps. #1 and #4 are not happening at the same time if that’s the way you interpreted it.

Edited:
(Sequential steps)
1) LED OFF
2) Push Button - LED Still OFF
3) Wait around 8 seconds
4) LED ON

 

With your configuration, the steps are now as follows:

1) LED OFF
2) Push Button (Relay Actuates) - LED ON for about 8 seconds
3) (Relay Unactuated) LED OFF

Questions: What kind of inverter are you hinting at? I am fairly new to circuit components.

 

Edited: forgot to mention it is in steps. #1 and #4 are not happening at the same time if that’s the way you interpreted it.

I didn't. You didn't answer my question. How long does the LED stay ON before getting back to step #1?

 

I see what you mean. The Led turns back on when the relay reactivates. The relay is off for about 8 seconds.

 

Is your plan to have the relay always activated until the button is pressed? What are the relay contacts connected to?

 

The relay is going to be connected to a DC motor. So, when the relay is actuated the motor will be on. I’d like if the relay was off before the button press, then when the button is pressed have the 8 second delay, and then turn the motor on.

 

Then after the 8 second delay the motor turns ON and runs continually until the power is shut off?

 

Then I would like the motor to run for approximately 1 second.

 

And then stay off until the button is clicked again.

 

Possible using 2 NE555 chips.

 

Right. That is what I was thinking, but the problem still persists of the temporary relay actuating before the button press.

 

 

View attachment 300859

Is this the circuit that would do what I want? I appreciate you greatly if that’s what you posted.

 

Didn't have time to fully test but should work. May need to adjust timing components.

 

Didn't have time to fully test but should work. May need to adjust timing components.

Why are you powering the second 555 from the first?
Wouldn't it be better just to trigger the second from the first?

 

Can I use a 2N2222 transistor or Mosfet instead of the BS170?

 

Note for previous question It is a small 3.7V N20 motor I will be using. The entire board will be powered with 18650 3.7V 2500 maH battery.