Art and Technology are Friends


Collider 60 kit

Kit contents shown (LEDs not in photo, but are included in the kit)

- See Collider 60 Introduction

Collider 60 is an easy to assemble kit suitable for beginners. Relatively small number of parts are spaced apart enough so that the soldering is simple.

Please note that Collider 60 is designed to be connectable. Unlimited number of units can be snapped together like tiles, in four directions.


  • 60 white diffused 5mm LEDs
  • PIC microcontroller is preprogrammed
  • PIC24F08KL402 16 bit microcontroller @ 32 MHz
  • Dimension: 4.72 inch (120mm) square, excluding the connector protruding
  • Snappable connector to tile multiple units
  • Unlimited number of connected units

Each Kit Contains:

  • 60x white diffused 5mm LEDs
  • 1x PIC24F08KL402 16 bit microcontroller
  • 1x 10k ohm Resistor (Brown, Black, Orange, Gold)
  • 6x 1k ohm Resistor (Brown, Black, Red, Gold)
  • 3x 0.1 uF Ceramic Capacitor
  • 1x 47 uF Electrolytic Capacitor
  • 1x 1N4148 or equivalent Switching Diode
  • 1x Tactile Switch
  • 1x Piezoelectric Speaker
  • 1x 20k ohm Potentiometer
  • 2x Molex Female header (3 position)
  • 2x Molex Male header (3 position)
  • 1x Knob
  • 1x PCB

- Circuit Schematics
- Assembly Guide

In-stock and shipping now!

Collider 60

Collider 60 is a very simple device – 60 LEDs on a square board, a knob in the middle. Lights run in a circle and the speed is adjustable by turning the knob.
Connect two or more Colliders and see the magic happen. When the lights run and hit the same spot at the same time, they “collide” as though they are running bullets, making clicking sound and change direction. By adjusting the rotation speed of each unit, the “collision” happens at a different interval.

The real fun starts with three or more units connected together. The results are no longer predictable.

Collider reminds us how all complex things in nature is comprised of simple roles. When you have enough number of “simple” things reacting together, you get unpredictable and interesting results.

See me at the Maker Faire Bay Area 2014

It’s that time of the year again. I’ve been working tirelessly preparing for Maker Faire Bay Area.
There will be a couple of new products introduced and on sale at special introductory prices!

Maker Faire website

R48 Battery Life Improved

After looking through the firmware very closely, I figured out a way to reduce power consumption of R48 via firmware tweaking. (Aggressive use of CPU “idle” mode while waiting for PWM pulse to output, etc.)

I managed to reduce the power consumption up to 43%. In my tests the batteries are lasting 50% or more longer!

All R48 will be shipped with the new, improved firmware as of today. If you already have R48, please send in for free upgrade.

How to receive the free firmware upgrade

  • Please send your R48 to the address below.
    The LED Artist
    12A Louis PL
    FL 2
    Brooklyn, NY 11233 USA
  • Send only the R48 unit, without batteries or chargers.
  • We will pay for the return postage. (Please pay for your postage to send in.)
  • Make sure to clearly indicate the return address.
  • The upgraded R48 will be sent back via USPS First Class mail.
  • Enjoy the longer battery life!

More Products Available at Maker Shed

I’m so excited to announce that my wearable items – A12, R48 (all colors), and USB Li-Ion Charger are now available at Maker Shed!

You can find them here.

Maker Shed also sells Color Organ Triple Deluxe II and Colour Night Joule Thief Kit.

The LED Artist wearables at Adafruit

I’m very excited to announce that now some of my LED wearables are sold at Adafruit!

See the “New Products” video – my wearables are on at 13:35.

A12 – Wearable LED Gadget with Full-Color LEDs

New addition to my wearable LED accessories is A12. A12 is the same size as R48, uses the same microcontroller and battery, but with 12 full-color LEDs. A12 produces patterns similar to Aurora mini 18, but lighter and has a built-in battery holder in the back.

A12 comes with a non-rechargeable battery (CR2450) and a black cord (lanyard) to hang around the neck. The battery lasts for about 5 hours or more in continuous run.

There are also rechargeable battery (LIR2450) and the charger available. With those, you won’t need to keep buying batteries.
The charger is very compact and plugs right into an USB port.


  • 12 full-color LEDs produce beautiful colors.
  • A12 is available fully assembled or soldering kit.
  • Comes with a non-rechargeable battery (CR2450, easily replaceable).
  • Battery will typically last about 5 hours continuously.
  • Also comes with black cord (lanyard) to hang around your neck.
  • 10 beautiful animation patterns preprogrammed.
  • “Demo” mode automatically runs though all animation patterns – changes every minute. (Activated by holding the button at the startup.)
  • Rechargeable battery (LIR2450) is also available as an option. This recommended option lights the LEDs brighter, as it has higher voltage.
  • The charger for the above is also available.
  • Dimension: 1.9 inch diameter, 0.4 inch thick (including the battery)

Technical Details:

  • 12 common-anode RGB LEDs.
  • PIC24F08KL301 16 bit microcontroller @ 32 MHz.
  • Each LED is PWM controlled in 128 gamma-corrected levels.

- more technical info here.

In-stock and shipping now!

Installation at Ingenuity Cleveland

Just came back from Ingenuity Cleveland art festival. I installed a piece titled Rainfall.

Rainfall consists of 24 vertical lines of LEDs on a wall 16 feet wide and 8 feet tall. Each line is made up of 10 modules with a microcontroller and 48 LEDs, so the total of 240 microcontrollers (plus a hidden main controller) and 11,520 LEDs are used.

Wiring up all of those modules were a pain, but I got through it.

The installation was a success. People were stopping and gazing at the piece, then taking pictures and video.

After the festival was over, the installation was moved to Cleveland Public Library, where it will be on display for 3 months.

I had a great time in Cleveland. Thank you so much everyone!

R48 Now Available in 4 Colors

R48 wearable LED accessory is now (finally!) available with 4 different color LEDs. In addition to blue, red, green and white LED versions are now available.

Thank you so much for waiting.

Purchase R48 here.