I’m new here and i’m working with a friend of me on a suit for carnival. We have sewn 2 x WS2811 led strip to a suit (left led strip and a right led strip). We have bought 2 USB accu packs and a Arduino nano.
We want to make the suit react on music, so we bought a microphone (this one: http://puu.sh/miahS/3c913486ad.jpg) but the readings are not perfect, so we are looking in a way to improve the microphone by an op-amp or the MSGEQ-7.
We have found an awesome video on youtube, the way we want to make the suit. Only then sound reactive. This one: https://youtu.be/gjn14hmwaxM?t=6m41s I already contacted the maker of that some weeks ago multiple times, but he doesn’t respond.
Can anybody help us out here, to create an awesome suit?
That device looks like a sound sensor as opposed to an amplifier. I’ve bought several different ones from aliexpress (hoping they were amplifiers) and they’re a PITA.
An MSGEQ7 breaks an existing input into 7 different frequency bins.
The best results I’ve had with a mic/amplifier is the MEMS microphone from Sparkfun. Combined with the open musiclabs FHT library, I avoided needing an MSGEQ7, however your mileage may vary.
Oh, and here’s one of my sound reactive sequences:
Yes that sound sensor is from aliexpress. Only the digital pin is amplified, the analog pin is only the microphone. My friend already made a simple amplifier with an op-amp. And we used software arduino code from http://dpeckett.com/beat-detection-on-the-arduino to make a bpm detection. That works fairly good.
Yes I saw it, forget about the MSGEQ7 we can’t use that.
I already read about FHT and FFT ----
We are now on a step to find the best way to detect audio. Do we keep the microphone with an opamp and the software based bpm detection and use that analog data to make sound active fastled code? Or do we use other values from the microphone to control our fastled code…?..
I can’t help you with the sound aspect, but feel like I should give you a heads up about your knees, waist, and elbow. The strips are flexible enough to apply to curved surfaces, but not flexible enough to last under constant bending. If you start bending the elbows/knees/waist a lot, you’ll probably end up with a broken connection. If you have time, you should cut the strips wherever there’s a joint and solder some loops of wire that can flex while the strip remains fixed. All the best on your project!
@allanGEE We have the ip67 version with a silicone tube. We hope it last, but the suit itself is already very wide and we are skiny persons. So there is not an extreme bending in the led strip when we wear the suit. Also there is no pressure on the led strip itself when we move arm/legs.
