neon lines in processing using a glsl filter

Nikolaus Gradwohl2013-08-19T07:47:18+00:00

I made a short processing script that draws sine curves and uses a glsl blur filter to add a neon effect

neonwaves

To create this effect you need a processing sketch drawing the curves and a glsl filter that adds the blur effect.

read more ...

particle traces

Nikolaus Gradwohl2013-08-17T07:38:26+00:00

This is another animation I made with the blender bTrace addon.

you can download the blend file here

particle curves

endless pattern generator

Nikolaus Gradwohl2013-08-12T06:20:38+00:00

Back in my Atari computing days I was fascinated by the endless pattern generators that generated never repeating complex patterns on my screen. This is a processing sketch that recreates this effect

click on the sketch to generate a new pattern

pattern

rectangles

Nikolaus Gradwohl2013-07-19T06:16:10+00:00

I created a new small processing sketch, cause I had to wait for someone and there was nothing else todo - well at least nothing else that I would have liked to do or that would have fit into that timeslot. Somehow this blogpost starts to get far more complicated than I intended it to be ...

I think you should just click on the image and rotate the rectangles ...

rectangles

RadioPI - debugging

Nikolaus Gradwohl2013-07-17T07:12:57+00:00

When it comes to DIY projects one rule that ALLWAYS applies is that it takes longer than originally planned :-/

I´m currently debugging the radio module for my raspberry pi based retro-car-radio project and I realized that debugging software is far easier that debugging a hardware module. I already found out that it´s a stupid idea to shorten some of the coppertraces by making the circuit board touch the metal housing of the radio and I forgot to solder in a resistor.

I also found out that it´s a bad idea to accidentally remove some of the smd parts of a raspberry pi (RIP) and that the sd card holder of a pi is not very stable :-/

currently I´m trying to find a replacement part for a broken variable resistor - but theeeeeen .... nearly there, really, this time for sure, what could possible go wrong?

Stay tuned :-)

radioPI debugging

More monster

Nikolaus Gradwohl2013-07-15T20:17:32+00:00

I just noticed that the last addition to my monster gallery where from 2011. So I arranged all the monsters my friends and family members have sent me since then

RadioPI hardware part 1

Nikolaus Gradwohl2013-07-05T07:21:44+00:00

Yesterday I started mounting the components for my raspberry pi based retro car radio into the housing of the blaupunkt radio from the 60ties.

And I learned a lot - the hard way :-)

  • For example that USB cables need an astonishing amount of space - even when folded and tied down with cable binders.
  • USB-connectors are really, really, REALLY large - even if they are called micro usb.
  • Drilling holes into ferromagnetical materials is a bad idea when you have two small speakers and a magnetic screwdriver laying on your desk - even it looks very funny

So there will be a unplanned part2 of the hardware session after I found shorter USB cables preferably with smaller connectors :-/

radiopi hardware part 1

RadioPI - finalizing the audio module

Nikolaus Gradwohl2013-07-03T07:44:28+00:00

Today I soldered the radio module for my rapsberry pi based car radio. This was the last soldering/electronic challenge for this project now I only need to finish the software (= easy) and the hardware problems (= somewhat outside of my comfort zone :-))

The audio board consists of a AR1010 breakout board from sparkfun that connects via i2c and a simple preamplifier for the radio signal. The 3 connector on the right side go to the analog audio out of the raspberry pi.

RadioPI radio module RadioPI led test

Day 30 of 30DaysOfCreativity - RadioPI interface module

Nikolaus Gradwohl2013-07-01T07:08:58+00:00

Today I finished the interface module for my raspberry pi based retro car radio. The module interfaces the buttons, the variable resistor and a RGB-led using an ATMega 328p running an arduino firmware.

This is my day 30 project for 30daysOfCreativity but I think I will need to extend my 30 days a bit so I can finish this project :-)

radiopi interface module

Day 29 of 30daysOfCreativity - Shapes

Nikolaus Gradwohl2013-06-30T11:37:03+00:00

I have been drawing shapes for my Day 29 project for 30dayOfCreativity

shapes