[Dynamic Living-Room Lights] The Lights Teaser Video

27 Dec 2014

List of previous posts

The Teaser

The project documentation is taking forever and I will release it much more systematically. For now, here is a small video of one of the parts which is the audio controlled LED lights. I am using the ARDUINO RGB LED SHIELD, XMC1202ARDUINO RGB LED SHIELD, XMC1202 and an Arduino. I am using an analog filter and the details will be released in an upcoming post.

Cheers,

Top Comments

ipv1 over 11 years ago in reply to gadget.iom +2

Thanks gadget.iom . You should have seem the tektronix Scope when I was doing an I2C Dump! I dare not try the I2C probe with the BusPirate since I would get a gazillion bytes at a time. Anyone have ideas…
mcb1 over 11 years ago in reply to ipv1 +2

Inderpreet Attached is a scan of the relevant part of the schematic (way before CAD) used for filtering the audio out and using it to drive the lighting effects. In our application we wanted the bass frequencies…
pmohan over 11 years ago +1

Hey.. That was a cool teaser and you are right about taking forever to document

mcb1 over 11 years ago in reply to ipv1

Inderpreet
Nice effects.

I'll try to scan the circuit we used in Night Club lighting effects.

Basically we filtered off the high frequencies, and half wave rectified the remaining audio.
(from memory) we capacitively coupled to the 'charge pump' and used the peaks to trigger the light change.

The system always adjusted itself to the volume, and responded to the bass. (or whatever frequency range you want)

Mark
ipv1
- Cancel
- Vote Up 0 Vote Down
- Sign in to reply
- More
- Cancel
shabaz over 11 years ago in reply to ipv1

Hi Inderpreet,

I wonder if the Arduino I2C library has delays between bytes or something. I noticed there is an option to increase the overall interface speed.
Is that where you are observing delay, or somewhere else?
- Cancel
- Vote Up +1 Vote Down
- Sign in to reply
- More
- Cancel
ipv1 over 11 years ago in reply to gadget.iom

Thanks gadget.iom . You should have seem the tektronix Scope when I was doing an I2C Dump! I dare not try the I2C probe with the BusPirate since I would get a gazillion bytes at a time.

Anyone have ideas on how to make the LEDs respond faster. They are good but I want better.

Cheers,
IP
- Cancel
- Vote Up +2 Vote Down
- Sign in to reply
- More
- Cancel
ipv1 over 11 years ago in reply to shabaz

Actually I am redoing the circuit since i got a good response at christmas. I am experimenting with the sallen key archi but have a much better idea.
I just might try and process the whole filter in the Arduino since I am looking at a lower frequesny range. My problem is that I am running a lot more on the YUN as well so still working at it.
- Cancel
- Vote Up 0 Vote Down
- Sign in to reply
- More
- Cancel
gadget.iom over 11 years ago

Like the Oscilloscope VU meter there.
Makes a nice visual effect.
- Cancel
- Vote Up +1 Vote Down
- Sign in to reply
- More
- Cancel