Knight Rider Light computer – version 2

This knight rider light computer is a successor of my first version of the Knight Rider. This version is much smaller and justifies the use of a microcontroller. The project is based on the PIC 12F629 microcontroller. The hardware part Unlike my previous project this light computer is build around the PIC12F629: a microcontroller with only 8 pins. It is shipped in a DIL-8 housing. An external clock is not n ...

Read more

DIY Light Therapy Light, Sunlight Simulation SAD Light

Sunlight simulation and light therapy light boxes are commonly used as light therapy for treatment of Seasonal Affective Disorder (SAD).  My mom has SAD and after seeing her wimpy light box I thought there had to be something better out there, after some research I was really surprised at the underwhelming sunlight simulator light therapy options on the market.  When I started this project my parents lived ...

Read more

Dark Sensitive Switch – LED Light

Dark activated LED light is a simple project which operates a LED when the light falling on the LDR goes below a set point.  The circuit is built using LM393 comparator, LDR as light sensor, preset (potentiometer) for sensitivity adjustment, transistor to drive the LED. The project can also be considered for use in energy saving application. Features Input – 12 V @ 1A LED 12V 500mA Maximum (6W) Onboard Pres ...

Read more

Researchers develop LED covering full visible light spectrum

LED and OLED lighting, which is generally called solid-state lighting (SSL), is becoming more common as the next generation lighting. Evaluations of total luminous flux (a performance index for lighting) and color are important for SSL, and to evaluate those values, it is indispensable to measure the light intensity of each wavelength accurately based on spectral measurement. For accurate spectral measureme ...

Read more

What is the Graphene light bulb?

The graphene lightbulb has been the subject of a huge amount of speculation over the past few days. What is it? The truth is, nobody outside University of Manchester spin-out Graphene Lighting knows, so ignore anything you have heard or read. “As a scientist, I would love to say more, but for commercial reasons I can’t,” professor Colin Bailey told Electronics Weekly. He is a non-executive director at Graph ...

Read more

Bicycle Persistence of Vision Light Display — February 2007

In February of 2007 I spent a little while prototyping a board that turns any bicycle wheel into a moving display billboard using a single string of LEDs. The idea was to do something that would be very visible, turn itself on and off automatically, have enough processing power to dynamically generate bike computer style displays, and have enough memory to store full resolution bitmaps. The first revision w ...

Read more

LEDs light the Sistine Chapel

The Sistine Chapel is now lit by LEDs, spectrally matched to excite the pigments used by Michelangelo, Botticelli and other artists working 500 hundred years ago. Since the 1980s, the chapel has been lit from outside through its 12 windows by a mixture of 150W spotlights and 1kW halogen projectors – 66kW in total, according to Osram which supplied the LED replacement. However, despite this huge power input, ...

Read more

Four way traffic light signal using PIC16F84A microcontroller:

Hi friends, today we are going to make a four way traffic light controller using a PIC16F84 microcontroller. In this project we will operate three LEDs (RED, YELLOW, and GREEN) according to the traffic rules. Illumination of the green light allows traffic to proceed in the direction denoted, Illumination of the yellow light denoting, if safe to do so, prepare to stop short of the intersection, and Illuminat ...

Read more

Night Light Saver V3.2 (PIC12C508)

A Microchip PIC12C508 8-pin CMOS Microcontroller turns a night light on and off with preset time everyday. Save Energy, No EMI, No Battery, Built-in Lamp Fixture, and Peak Shaving Introduction It's time for 8-pin microcontroller Microchip PIC12C508, the SAVER V3.2, my latest design of a device that turns a night light on and off everyday. The circuit uses only a PIC12C508 8-pin CMOS micontroller and a small ...

Read more

Night Light Saver V3.2 (PIC12C508)

Introduction It's time for 8-pin microcontroller Microchip PIC12C508, the SAVER V3.2, my latest design of a device that turns a night light on and off everyday. The circuit uses only a PIC12C508 8-pin CMOS micontroller and a small triac, MAC97A6. The Saver V3.2 also demonstrates the use PCW PIC C Compiler.   Circuit Description The schematic of the SAVER V3.2 is depicted in Figure 1.A transformerless p ...

Read more
Scroll to top