Christmas Stars

I want to hang some 3VDC strings of LED lights from a high ceiling. I want to be able to turn them on/off via a remote. Are there products available to toggle on/off a 3V load? Would the receiver of the remote need its own power supply, or would it be able to run on the same 3V power supply as the LED lights? The LED lights will be powered by plain old D batteries. For a clean look, I do not want to run wires up the walls and across the ceiling.

by canvasboatcovers
December 03, 2018

1 Answer

Answer by mikerogerswsm

Some intelligence is required at the receive end to decode the infrared signal. Here is one way to do it:

https://maker.pro/arduino/tutorial/how-to-control-leds-with-arduino-ir-sensor-and-remote

You will need 5V. The amount of hardware is probably overkill, but is the simplest I can find.

+1 vote
by mikerogerswsm
December 04, 2018

There is a PIC which will run on 3V:

http://ww1.microchip.com/downloads/en/DeviceDoc/39663d.pdf

If you can transpose the software above to C++ then this would provide a compact 3V system.

And no, I don't know of a ready-made one. That's the joy of electronics, you design and build things yourself.

by mikerogerswsm
December 04, 2018

You might be able to cannibalise a kids' toy:

https://www.amazon.co.uk/dp/B07KZQDNBB/ref=twister_B07KZQ799X?_encoding=UTF8&psc=1

by mikerogerswsm
December 04, 2018

Your Answer

You must log in or create an account (free!) to answer a question.

Log in Create an account


Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

Search Questions & Answers


Ask a Question

Anyone can ask a question.

Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.


About This Site

CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.

We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.

Acceptable Questions:

  • Concept or theory questions
  • Practical engineering questions
  • “Homework” questions
  • Software/hardware intersection
  • Best practices
  • Design choices & component selection
  • Troubleshooting

Unacceptable Questions:

  • Non-English language content
  • Non-question discussion
  • Non-electronics questions
  • Vendor-specific topics
  • Pure software questions
  • CircuitLab software support

Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.