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22 Feb 2011

An attempt to make a good solar reflector out of mirror pieces and a Direct TV satellite dish

Building a Parabolic Solar Reflector out of a Satellite Dish – [Link]

29 Jan 2011

Make writes: [via]

With the Solar TV Remote project from MAKE Volume 25, you’ll never have to replace your remote control’s batteries again. Instead, just leave it in the sun to charge up! This project is fairly easy and you may already have most of the tools and supplies you’ll need.

Solar TV remote – [Link]

25 Jan 2011

MintyStick! Andrew writes:

Finally, I have succeeding in producing my own variation on the MintyBoost. I found inspiration on this post (http://forums.adafruit.com/viewtopic.php?f=15&t=18225) on the Adafruit forums. It looks like a stick of gum, and I like it, because it’s single-sided, and because it looked like it would be pretty easy to make at home with my toner transfer setup. I call it the MintStick, because sometimes I don’t like to spend a lot of time trying to come up with good names for things. It’s version 3.0 to indicate compatibility with the MintyBoost 3.0 (since it ought to support the same devices).

MintyStick – Solar Charger – [Link]

20 Jan 2011

The Ecotricity PS1800S is a portable solar generator that charges itself using a large solar panel and produces standby power using a 12 volt 60Ah sealed lead acid battery. The controller also includes a 1800 watt inverter. [via]

Ecotricity PS1800S Portable Solar Generator – [Link]

15 Jan 2011

Sunswift, a team of students at the University of New South Wales, has broken the land speed record for a purely solar powered vehicle. The vehicle hit 88Kph (55Mph) on January 7, 2011. [via]

Sunswift IV, world’s fastest solar-powered racer – [Link]

7 Jan 2011

Today’s method of flexible solar cell manufaturing, is based on highly purified silicon compounds, which is an expensive procedure. MIT came a step closer to cheaper flexible solar cells, by using organic (carbon-containing) compounds to make lightweight, cheap and flexible cells.

The main problem why carbon did not work so far, was that graphene repels water. Typical procedures for making an electrode on the surface, by depositing the material from a solution do not work. But the MIT team added some impurities onto the surface (doping) and this changed the behavior of graphene, making it possible to bond tightly. Moreover, this doping increased the conductivity of graphene.[via]

MIT is a step closer to cheap organic solar cells – [Link]

31 Dec 2010

A team from Caltech (California Institute of Technology) ETH Zurich and the Paul Scherrer Institute could assist the thermo-chemical production of fuels.  In a paper published in the journal Science, the researchers claim that fuel can be generated over 500 cycles. Solar to fuel efficiencies of 0.7-0.8 per cent were achieved. [via]

Solar reactor produces fuel from water and carbon dioxide – [Link]

19 Dec 2010

This device allows solar cell arrays to be connected to either conventional lead-acid, sealed lead-acid, or lithium storage batteries without fear of overcharging. It allows two different electrical loads to be driven from the batteries at two different charge states to maximise power usage efficiency.

Photovoltaic Solar Battery Regulator and Load Controller – [Link]

7 Dec 2010

This project is a solar irradiance meter based on TSL230R Light-to-Frequency converter and Amicus 18F25K20.

This chip features an “electronic iris” to facilitate measurements over a wide range of intensities. The photo sensor may be enabled in 3 stages to measure from near darkness (the glow of a computer monitor) to full-intensity sunlight. The output of the sensor is a pulse stream whose frequency is proportional to irradiance.

Solar Irradiance Meter – [Link]

30 Nov 2010

This project shows how to build a 60W solar panel using common tools and inexpensive and easy to acquire materials. It will guide you through buying the solar cells, building the box, solder the solar celsl together,  install the panel on the box, install a blocking diode, testing the solar panel etc. Check details on the link below.

Build a 60 Watt Solar Panel – [Link]





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