This is a really impressive clock made using 60 RGB SMD Leds, making any color palette possible. It uses an Arduino, 12 LED drivers and 60 RGB Leds. All the functions of the clock are controlled via a capacitance switch that is hidden behind the infinity logo at the bottom of the clock. [via]

In this version of the software the color palette cycles through the colors of the rainbow twice a day. There is a light sensor to make sure that the intensity is tuned down in the dark.

Equinox Clock - [Link]

MIT scientists have created a novel set of self-assembling molecules that can turn sunlight into electricity; the molecules can be repeatedly broken down and then reassembled quickly, just by adding or removing an additional solution.

In an attempt to imitate the process of photosynthesis, Michael Strano, the Charles and Hilda Roddey Associate Professor of Chemical Engineering, and his team, supported by grants from the MIT Energy Initiative, the Eni Solar Frontiers Center at MIT and the Department of Energy, produced synthetic molecules called phospholipids that form disks; these disks provide structural support for other molecules that actually respond to light, in structures called reaction centers, which release electrons when struck by particles of light.

[via]

Self-assembling photovoltaic technology can keep repairing itself – [Link]

Morten Nisker decided to build his own Mobile Electronics Workbench including all the tools and supplies needed inside a wood box. With this carrying case you can make electronics repairs on the go and have everything organized. Check building instructions on the link below.

Mobile Electronics Workbench - [Link]

This project shows how to build an Arduino based GPS system capable of displaying the current location, heading, speed, average speed and maximum speed, the distance traveled, the bearing, distance and ETA for a way-point, and the date and time. This unit can also be used for Geocaching. It is using SparkFun GPS Shield and Nuelectronics LCD Keypad Shield together in a useful way. [via]

Arduino GPS system - [Link]

This project shows how to build a synchronization box capable to control up to four external flashes. External flashes are connected using RCA connectors. It is able to connect to a camera or other triggering sources like a sound trigger for example. Check schematic on the link below.  [via]

DIY multi flash syncronization - [Link]

This project shows how to build a Dual Variable Power Supply using LM317 and LM7805. It has two different outputs.. one stable at 5V and one variable, rated at 1 ampere each. The power comes from a transformer. Schematic and PCB is available on Eagle format.

A lot of emphasis was put on making this power supply very stable, a big 4700uF cap takes care of the ripple, then come the regulators, after that a 220uF clean any noises that the regulator might have let pass. The polyester capacitors do a more subtle filtering.

Dual Variable Power Supply using LM317 and LM7805 - [Link]

This project shows how to place the components on a breadboard to make an Arduino compatible unit. This is great for doing experiments with Arduino or using it as prototyping platform. Follow the steps on the link below to make your own.

How-to Breadboard Arduino Compatible – [Link]

A PIC16F628A based digital thermometer reads temperature from a Ds1820 sensor and displays on a multiplexed 4-digit Seven Segment Display. The temperature is displayed in both Fahrenheit and Centigrade units one after the other. PIC programming is done on mikroC, and the temperature resolution is 1 in F and C scales. The range of temperature measurement is -55 to 125 C.

PIC16F628A + DS1820 Thermometer - [Link]