Who else is using Neopixels to display frequency bands using FHT?

(Henry Birdseye Jr.) #1

Who else is using Neopixels to display frequency bands using FHT?

I have this working on a full-sized Arduino, but I want to make a portable version. Would a Flora work too? A Trinket?

(Robert Atkins) #2

Go for a DFrobot Beetle. They’re tiny, Arduino Leonardo spec (32u4, 2.5k RAM), 5V and less than 8 bucks!

(Henry Birdseye Jr.) #3

This little guy?

(Andrew Tuline) #4

@Henry_Birdseye_Jr That looks like a 3rd party reseller making a markup to me.

(Marc Miller) #5



They also sell them in a 10 pack.

(Marc Miller) #6

Also, cool, looks like you have that working rather nicely.

(Henry Birdseye Jr.) #7

Yeah, it’s Andrew’s code. I’m messing with it to make the colors blink less.

(Juergen Bruegl) #8

Trouble-free option is Teensy 3.1 or 3.2 (if you need more 3.3V output)
Also supports FHT

(Henry Birdseye Jr.) #9

I think the Teensy if the winner. FHT is processor intensive enough to need the extra memory and crunching power.

I still have a few hurdles to jump. Have to get a meter-long clear tube of some sort and attach it to a handle containing the electronics and battery.

Any suggestions for battery power. Something LiPo for sure.

(Andrew Tuline) #10

Depending on the number of LED’s being powered, I just use a USB power bank along with power managed FastLED code (to limit the maximum current draw).

As a result, I haven’t yet implemented power hungry portable displays.