Art and Technology are Friends

Posts tagged “PCB mention of JT Blinker

Mr. Watson of blog wrote about the LED blinker circuit using Joule Thief. I’ve sent him a PCB of my prototype, named JT Blinker – multivibrator and Joule Thief combined to blink LEDs with one 1.5V battery.

He had designed a similar circuit years ago, and has some insights about this type of circuits…

> read the article at Rustybolt

Some Old Works of Mine

I was doing some clean up and found some old works from years ago…


Wave JT – Kit and PCB

Wave JT is a tiny LED sequencer or “Larson Scanner” on steroid. It has over 16 sequence patterns, and speed can be adjusted by double/triple tapping the button. It’s the most versatile LED chaser.

Unlike other LED chasers, Wave JT controls each LED in smooth 7 bit (128 levels) brightness levels. The brightness curve is gamma-corrected like Aurora series, so the fades are visually pleasing.

Not only Wave JT versatile, it’s also energy efficient. Wave JT runs on a single AA battery, and the battery lasts for days!

> See more pictures and video

Please view technical details and assembly instructions at instructables.

Wave JT is made with 100% through hole parts. No surface mount parts!

Kit Contents
8x 3mm or 5mm Super Bright LED of your choice
1x 4.7k ohm (R1)
1x 100k ohm (R2)
8x 39 ohm (R3-10)
1x 10pF Ceramic Capacitor (C1)
1x 0.1uF Ceramic Capacitor (C3)
1x 33uF 10V Electrolytic Capacitor (C2)
1x 47-100uH Axial Inductor (L1)
1x Schottky Diode (D1)
1x 5.1V 500mW Zener Diode (D2)
2x MPS2222A or equivalent NPN BJT (Q1-2)
1x PIC16F1823 or PIC16F1824
1x Tactile Switch (SW1)
2x Battery Clips

Note: As of Oct. 1, 2012, all Wave JT kits are shipping with preprogrammed PIC. You do not need a PIC programmer to assemble Wave JT kits!

*** Purchase Here ***

Colour Night Joule Thief kit

Colour(Color) Night Joule Thief kit and PCB are available. Please use the buttons below to purchase.

Detailed information and building instructions are here:

*** Purchase Here ***

Night Joule Thief – LED Night Light Kit

Joule Thief circuit is combined with an ambient light sensor – Night Joule Thief is a little night light that keeps going with just one battery for weeks! Two white LEDs light up surprisingly bright.

* This is the original version of Night Joule Thief that uses white LEDs – not to be confused with the new color changing version.

Please view the instructables for technical info and assembly steps.

*** NOTE: The color of the PCB will be green instead of purple shown in some of the pictures. ***

*** Purchase Here ***