I'm working on a project where I need backlights for a 3D printed sign with translucent letters. All I want to do is cut a strip of LEDs to length, solder the wires to a 9 volt jack, and have the user plug in a 9V wall wart. Can I use these lights for this purpose? https://www.adafruit.com/product/4612
I don't want to use a microcontroller or any other circuitry.
LED Strip for backlight
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- adafruit_support_bill
- Posts: 88151
- Joined: Sat Feb 07, 2009 10:11 am
Re: LED Strip for backlight
Yes. Those will work. No microcontroller required. With a 12v supply they will be a bit brighter than with 9v.
- MarkVanHorne
- Posts: 9
- Joined: Sat Mar 19, 2016 1:12 pm
Re: LED Strip for backlight
Thanks. I will buy them.
Do I need to add a current limiting resistor, or is one built into the strip?
Do I need to add a current limiting resistor, or is one built into the strip?
- adafruit_support_bill
- Posts: 88151
- Joined: Sat Feb 07, 2009 10:11 am
Re: LED Strip for backlight
Current limiting is built into the strips. You just need to supply them with 9v-12v DC.
You will need a power supply with at least 1A per meter of strip.
You will need a power supply with at least 1A per meter of strip.
Please be positive and constructive with your questions and comments.