I want to press a button and it will give this device power just for 30 seconds

[InGearX]

hmm note my amazon.com links fail to show up - why? it is blocked so spammers would not try to make commission?

Say we have a device for an art project - makes a sound - that we want it to last for just 30 seconds - that runs on 110v
once current is supplied to the device it keeps going
so our approach is to have a system in place that - when a user to presses a button it will give this device power just for 30 seconds

seems simple, but ... what electronics hardware can I buy / use for this?

any ideas?

PS:
my hack so far is

STEP 1

use this for on/off button:

Philips Grounded Plug with Braided Cord, 6 Ft Long Power Cable, ON/Off Switch

https://shorturl.at/0sWmx

but I would like to have it as a sexier button like the staples "EASY" button
==== ==== ==== ====
STEP 2
use this to give power just for 30 seconds - I have not tested it and I hope it will work by setting off to be max 24 hours and on to be 30 seconds

thus I hope when power is cycled and given by the above Philips Grounded Plug - it will power the device for

BN-LINK Timer Outlet Short Period Repeat Cycle Intermittent Digital Timer, Interval Timer - Day, Night, or 24 Hour Operation, Programmable Plug-in Timer for Appliances Electrical Outlets 15A/1875W

https://shorturl.at/jHlzF

what do you think?


==== ==== ==== ====
PS this would be a one device solution

BN-LINK Indoor Countdown Timer with Repeat Function, Heavy Duty Accurate Compact Size for Charger Vacation Security, 3-Prong Grounded Outlet

https://shorturl.at/utiwO

but it has only a 15 min minimum - instead of 30 seconds

I could get this and it has 1 minute - but I'd like to have an option to control 30 seconds or 45 or 60 or 90 or so ...


https://tinyurl.com/4ze33tnr

search for power timers - https://www.amazon.com/s?k=power+timers

PSS I asked ChatGPT this

I have a device that runs on 110v - I want to press a button and it will give this device power just for 30 seconds - what electronics hardware can I buy / use for this ?

in short it advised to use

DH48S-S Timer Relay

https://www.amazon.com/s?k=DH48S-S+Timer+Relay

takes figuring out
https://shorturl.at/prGBw

reply

1. Timer Relay Module
A timer relay module is an electronic device that controls power to a load for a set duration.
Recommended Product: A programmable timer relay like the DH48S-S Timer Relay or similar modules.
Ensure the module supports 110V AC and allows programming for a 30-second duration.
2. Push-Button Switch
A momentary push-button switch will act as the trigger for the timer relay.
Specification: Ensure the button can handle the control voltage of the timer module (usually low voltage, e.g., 12V DC).
3. Solid-State Relay (Optional)
If the timer module cannot handle high power directly, use a solid-state relay (SSR) or a standard electromagnetic relay rated for 110V AC.
This isolates the control circuit from the high-power device and provides safety.
4. Power Supply (if needed)
Some timer relays require a DC power supply (e.g., 12V or 24V DC) for their operation.
Use a small power adapter matching the relay's requirements.
Wiring Instructions:
Connect the Timer Relay:

Power the timer relay according to its specifications (e.g., connect a 12V DC adapter).
Program the relay for a 30-second delay.
Wire the Button:

Connect the push-button to the relay’s trigger input terminals.
Control the Load:

Connect the device to the output side of the timer relay.
If using an external SSR or relay, connect the timer relay's output to control the SSR/relay and wire your device through the SSR.
Test the System:

Press the button to trigger the relay. The device should power on for 30 seconds and then turn off automatically.
Pre-Built Options:
Some smart plugs with timers (like Wi-Fi plugs) can be programmed for this functionality via an app, but they require internet or smartphone control.
Off-the-shelf timer switches: Look for products labeled as "power timers" or "delay-off switches."
Let me know if you’d like help selecting specific models or creating a circuit diagram!

[Sham]

hmm note my amazon.com links fail to show up - why? it is blocked so spammers would not try to make commission?

I had gifted a box of unique switches and odd gizmos to a young burner buddy. In the box was a mechanical timer switch that was adjustable with a screw. It worked on air that was released in the switch, and turned it off based on the adjustment. It may be what you're looking for. I sent a message to see if it was being used.

[Popeye]

I'd use a relay rated for 120% of the load and put a resistor and a capacitor across the coil. The size of the resistor and capacitor determines the time the relay was held closed. Multiply the resistor in ohms by the capacitor in farads to get the time constant.
Cheap, reliable and you don't have to worry about the quality of some of the junk on the internet.
For a circuit diagram google RC time constant.

[BBadger]

If you want something kind of all-in-one, you can buy "off delay timer" industrial modules (DIN rail mount) that you can configure to shut off after some period after the input signal is off. Here is an example, but not an endorsement of this particular module.

Here is another timer relay product if you don't want to go that route. I have not personally used that product, so you'll need to do your own testing.