🔮Adafruit sale all weekend long – use the code ADATHX for 15% off! 🔮
0

School project
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

School project

by timdrapeau on Mon Mar 07, 2016 12:01 am

We are building a small project and need help selecting the right supplies. I have attached a sketch
We will have a plastic base and 7 bamboo poles (1 inch diameter each). We would like to have each bamboo pole to have separate LED. Ideally, 6 with same color and 1 different.
I was thinking about using the NeoPixel 8mm LED's and need help with powersource and supplies. Ideally I just need a battery power source for this school project and the appropriate neopixels and holders.

Thanks
Tim
Attachments
school project.JPG
school project.JPG (667.2 KiB) Viewed 259 times

timdrapeau
 
Posts: 2
Joined: Sun Mar 06, 2016 11:49 pm

Re: School project

by adafruit_support_bill on Mon Mar 07, 2016 7:01 am

What do you plan to do with the LEDs? Neopixels require a microcontroller of some sort to drive them. If they will be steady-on, then discrete LEDs would simplify your circuit a bit.

adafruit_support_bill
 
Posts: 79404
Joined: Sat Feb 07, 2009 10:11 am

Re: School project

by timdrapeau on Mon Mar 07, 2016 11:41 am

Lets keep it simple. This is for a school project and I think discrete LED's would be great. She simply needs to insert 7 discrete LED's into the bamboo columns. She iwas looking for solid colors. 6 yellow and 1 blue perhaps Let me know what would work best and I will place order today.

Also, her twin sister is looking for a multi color LED that would be used inside something like a disco ball. What sort of multi color LED and driver would work for that? She is building the object out of Polyethylene

Tim

timdrapeau
 
Posts: 2
Joined: Sun Mar 06, 2016 11:49 pm

Re: School project

by adafruit_support_bill on Mon Mar 07, 2016 12:10 pm

For discrete LEDs, you would need the LEDs. Some resistors and a battery holder. You could run the whole thing from a 3xAAA battery pack.\
https://www.adafruit.com/products/771

The yellow LEDs should be wired in series with about a 220 ohm resistor to limit the current: https://www.adafruit.com/products/2780
The blue LED operates at a slightly higher voltage and needs a smaller resistor value. You can wire 2 of the 220 ohms in parallel to make a 110 ohm equivalent, then put that in series with the blue LED.

https://learn.adafruit.com/all-about-leds

For the multicolor LED project, you could use essentially the same circuit with a variety of different discrete led colors.
Or you could use some of these for some colorful flashing effects
https://www.adafruit.com/products/679

adafruit_support_bill
 
Posts: 79404
Joined: Sat Feb 07, 2009 10:11 am

Please be positive and constructive with your questions and comments.