Comments: Light-Up Valentine Cards

≡ Pages

Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Member #658989 / about 10 years ago / 1

    Hello there,

    And thank you for this tuto.

    I've got a question though : is there a need for a resistor between the CR1225 battery (3V) and the standard 3mm LED (2.0-2.4VDC forward drop) ?

    Additional question : using a CR1225 (47mAh capacited), and with a 20mAh LED, I can expect approximately 2 hours of functioning, right ?

    I know these are basic noob question, but I do not want to try it the wrong way.

    Thanks !

    Kevin

If you've found an issue with this tutorial content, please send us your feedback!