Art and Technology are Friends

Latest

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
    555 Dekalb Avenue 4L
    Brooklyn, NY 11205
  • 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!

Aurora 9×18 mk2 kit Back in Stock


Aurora 9×18 mk2 kit & PCB are now back in stock!

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.

Features/Notes:

  • 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!

A12 Fully Assembled: $45
Fully assembled – just insert the battery and go.

A12 Kit: $27
Kit – *** Requires SMD soldering skill and PICKit 3 or equivalent PIC programmer. ***

A12 combo set: $60
A fully-assembled A12, a rechargeable battery and a USB charger to get you started.

Rechargeable Li-Ion Coin Battery (LIR2450): $4.00
Requires Lithium-Ion battery charger for charging.

USB Li-Ion Coin Battery Charger: $15
Charges LIR2450 Lithium-Ion battery from an USB port.


A12 Kit




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.

This is a kit version, which requires surface mount soldering, and PIC programming hardware such as PICKit3. If you don’t have SMT soldering skill, or PIC programmer, there is a fully assembled version as well.

Features/Notes:

  • 12 common-anode RGB LEDs.
  • PIC24F08KL301 16 bit microcontroller @ 32 MHz.
  • Each LED is PWM controlled in 128 gamma-corrected levels.
  • Dimension: 1.9 inch diameter, 0.4 inch thick (including the battery)
  • Powered by a coin cell battery (CR2450 or LIR2450).
  • Battery will typically last about 5 hours continuously.

Parts List

  • 1x PIC24F08KL301 or 401 – IC1
  • 12x PLCC4 RGB LED (common-anode)
  • 1x 10uF 10V MLCC – C1
  • 1x Tactile Switch – SW1
  • 1x Battery Retainer
  • 1x CR2450 (Lithium) or LIR2450 (Rechargeable Li-ion) Battery

Schematics: A12 schematic-rev6

Firmware: A12-1.3.hex

In-stock and shipping now!

- Purchase fully assembled version here.

A12 Kit: $27
Kit – *** Requires SMD soldering skill and PICKit 3 or equivalent PIC programmer. ***

Rechargeable Li-Ion Coin Battery (LIR2450): $4.00
Requires Lithium-Ion battery charger for charging.

USB Li-Ion Coin Battery Charger: $15
Charges LIR2450 Lithium-Ion battery from an USB port.


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.

New R48 Video Clip

Finally, a short but sweet video clip of R48 blue. I hope you enjoy…

> R48 blue and accessories

R48 and Li-Ion Charger

R48 comes with a non-rechargeable battery (CR2450) and a black cord (lanyard) to hang around the neck. The battery lasts for about 7-8 hours 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.


White LEDs look yellow when they are not lit. Other colors (red, green, and blue) look like the photo above.

Features/Notes:

  • Available with 4 different color LEDs: Red, Green, Blue, and White.
  • Each R48 is fully assembled, and comes with a non-rechargeable battery (CR2450, easily replaceable).
  • Battery will typically last about 7-8 hours continuously.
  • Also comes with black cord (lanyard) to hang R48 around your neck.
  • 25 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)

In-stock and shipping now!

R48: $45
Fully assembled – just insert the battery and go.
LED Color

R48 combo set: $60
An R48, a rechargeable battery and a USB charger to get you started.
LED Color

Rechargeable Li-Ion Coin Battery (LIR2450): $4.00
Requires Lithium-Ion battery charger for charging.

USB Li-Ion Coin Battery Charger: $15
Charges LIR2450 Lithium-Ion battery from an USB port.