Ledtranceguy Blog, LEDs, Trance and other EDM, and Festivals - All Items

2018/04/28 Trance Family SF 8 at Midway, SF

π 2018-04-28 01:01 in Clubbing, Tfsf

It's already been a year since the great TFSF 7 party last year, I was definitely looking forward to this new one in an even bigger venue.

I got to try my new shirt, I had spent weeks working on:

found a friend :)

The outdoor patio was nice, and the psytrance wasn't bad either :)

Khromata did a nice set, quite enjoyable

Other inside pictures:

The main room sadly was way too loud most of the time, even with earplugs, kind of a bummer. At times, it was also way too smoky. At times, it was not possible to take any decent pictures when it was barely possible to see the stage due to smoke. On the flipside, that allowed me to spend more time in the Trance Classics room, which worked out totally fine :)

did I say too smoky?

Other rooms:

I spent most of my time in the Trance Classics room. It was smaller, but it was definitely the best music for me :)

David did great work with the video visuals

then, my friend DJ Blurr took over

Taj was last, spinning vinyl

I definitely had a great night. The venue was nice, the decors were also good, and the choices of DJs and music were great. Thank you!

Quick sample/summary video:

And DJ Blurr's entire set:

Oh, and if you're curious, an early demo of my new shirt prototype, which I got to try for the first time that night (still work in progress):

See more images for Trance Family SF 8 at Midway, SF

2018/04/23 FastLED::NeoMatrix library: how to do Matrices with FastLED and Adafruit::GFX

π 2018-04-23 01:01 in Arduino

I've been a fan of Neopixels and Adafruit's Neomatrix library since last year. Why is Neomatrix special? It allows you to create Neopixel matrix displays and treat them like a panel display on which you can apply Adafruit::GFX primitives.

The problem is that https://github.com/adafruit/Adafruit_NeoMatrix only supports the https://github.com/adafruit/Adafruit_Neopixel backend which in turn only supports neopixels, and only in a serialized fashion. Serialized means that if you have 1024 pixels (32x32 matrix), it takes about 35 to 40ms to send a single frame, which means you can only update at a 25fps rate, which is not that good.

https://github.com/FastLED/FastLED fixes this by offering support for a lot of different kinds of LEDs, but also for offering parallel output on multiple MCUs, allowing you to get up to 16x faster updates by segmenting the strip to update sequentially. It also offers much nicer primitives like automatic fading, and the ability to have multiple independent strips of different lengths that can display different patterns.

Neomatrix is aweseome since it offers access to the GFX library primitives (circles, lines, rectangles, and fonts), but since it didn't work with a FastLED backend, I ported it to FastLED.

You can get the code here: https://github.com/marcmerlin/FastLED_NeoMatrix
You can also see my NeoMatrix Shirt on this page

Hello world

Thanks to Adafruit::GFX, it's easy to display fonts and bitmaps

32x32 is slightly better to display bitmaps

This will be the display on my shirt

GFX allows drawing lines, circles and all

Fonts can be of any size

See more images for FastLED::NeoMatrix library: how to do Matrices with FastLED and Adafruit::GFX

2018/04/15 Jean Michel Jarre @ San Jose City National Civic Theatre

π 2018-04-15 01:01 in Clubbing

Like I was saying in my previous post, I've been a fan of Jean Michel Jarre since the 1980's when I was a teenager. Along with Vangelis, Jean Michel Jarre is one of the founders of Electronic Music. The two of them were popular before anyone else was even around doing any EDM.

Well, after never having managed to see JMJ live in all these years I was listening to his music in France, I now get to see him twice in less than a year. His last show was less than a year ago at the Berkeley Greek Theatre. It feels so weird to see him twice in such a short time when I had never seen him in the last 30 years before that.

A few pictures: