Best combination for IR controlled UV strip

[puyzzem]

Hey folks, I have a ~30cm of UV strip which runs on 12V. My current setup consists of:

1 Arduino Nano

1 18650 battery for powering the UV Strip

1 Power bank for powering the Arduino

1 IR Receiver

1 12V Relay as a switch for the UV Strip

1 MT3608 for increasing the 3.7V 18650 battery to 12V for the Strip.

The question is, the system takes a hell ton of space, and since my only use case is turning on and off the strip with the IR remote. I think that the system can be much smaller. I looked through the web and took assistance from GPT, but the more I asked the GPT the more I got confused. For space and power efficiency, what would be the best combination of parts? As said before, I do not have to use any of the above if not needed, in fact I’d very rather ditch the current setup. The only thing is space and power efficiency. Thanks a lot!

P.S. the setup has to run with a battery since I have no possibility of connecting it to an outlet.

 

[Bluejets]

As said before, I do not have to use any of the above if not needed, in fact I’d very rather ditch the current setup. The only thing is space and power efficiency. Thanks a lot!

P.S. the setup has to run with a battery since I have no possibility of connecting it to an outlet.

Best give some thought to taking up lawn bowls then.
Fact of life that certain things cannot physically reduced beyond a set dimension.

 

[Harald Kapp]

Why go to the length of using a microcontroller with extra power supply?
Get a complete 12 V ir-controlled relay module like e.g. this one.
Then you can power the ir receiver from the same 12 V source as the LED strip.

 

[puyzzem]

Why go to the length of using a microcontroller with extra power supply?
Get a complete 12 V ir-controlled relay module like e.g. this one.
Then you can power the ir receiver from the same 12 V source as the LED strip.

This is EXACTLY what I was looking for. Thank you so much for it. The catch is, I live in a relatively rural area where I couldn't find this in my place. Is it possible for me to make this myself?

 

[puyzzem]

Best give some thought to taking up lawn bowls then.
Fact of life that certain things cannot physically reduced beyond a set dimension.

You're right, but for a single ON-OFF operation, don't you think this circuit can be made smaller?

 

[Harald Kapp]

Get rid of the 5 V power bank. Use a 78L05 based regulator to get 5 V from the 12 V . Alternatively, but bigger size, use a second step-up regulator to generate 5 V from the 3.7 V battery.

Get rid of the relay. Use a logic level MOSFET (selection page, also available e.g. on A...n) to drive the LEDs like so:

This reduces the size considerably:
Not shown are the small 78L05 voltage regulator and the MOSFET as these are neglibible in size compared to the rest of the components.

 

[puyzzem]

Get rid of the 5 V power bank. Use a 78L05 based regulator to get 5 V from the 12 V . Alternatively, but bigger size, use a second step-up regulator to generate 5 V from the 3.7 V battery.

Get rid of the relay. Use a logic level MOSFET (selection page, also available e.g. on A...n) to drive the LEDs like so:
View attachment 65326
This reduces the size considerably:
View attachment 65327Not shown are the small 78L05 voltage regulator and the MOSFET as these are neglibible in size compared to the rest of the components.

This is much better. Though, is it possible for me to get rid of the arduino altogether since it takes up a big chunk of space as well?

 

[Harald Kapp]

is it possible for me to get rid of the arduino altogether

Yes, if you buy a module similar to the one I linked in post #3. This kind of module is available in the same or similar form from many vendors. Use your favorite search engine with the search term: ir controlled relay

 

[puyzzem]

Yes, if you buy a module similar to the one I linked in post #3. This kind of module is available in the same or similar form from many vendors. Use your favorite search engine with the search term: ir controlled relay

Thank you!