Find out how much you can save with solar!

Zip Code
Categories
 
Latest Articles
Solar Power Savings
Posted: 2009-10-05
Besides the roof systems, there are cost-effective solar projects for getting your hot water, heating your pool and warming your home. Let’s take a look at four common installations.
Solar Financing Makes Alternative Energy Affordable
Posted: 2009-10-04
Not all homeowners can afford $20,000-60,000 for home solar power. Even those who have the money, or sufficient home equity, may not want to use their savings or leverage their credit to buy solar.
Solar Power Installation Breakdown
Posted: 2009-10-03
There is a great deal of misinformation circulating about the cost of installing a solar power system, specifically a roof-mounted photovoltaic (PV) one.
 
Latest Tweets
enviroart
#environment #solar Wind power's dirty secret: It has a carbon footprint http://bit.ly/crvwNP
 
enviroart
#environment #solar Is Making Biodiesel at Home Safe? - Home Bio Diesel Production ... http://bit.ly/dfiTz7
Solar Powered Computer
Topic: Homebrew   Posted:2004-04-20
Printer Friendly: Print

I modified an Odyssey 2 computer so that it runs on solar power. The Odyssey 2 has a 12 VDC power supply; however, this just goes in to a voltage regulator that brings the power down to 5 VDC. So, I am able to run the power down to 10V. I changed the charge control program so that it turns off the Odyssey 2 when the voltage gets to 10V.

Here is a picture:

Here is the assembly listing:

    ;
    ;  8048 Disassembly of solody.bin
    ;  04/20/04 5:25
    ;
    org     0
    ;
    clr     a
    outl    p2,a
    mov     a,#80h
    outl    p2,a
    X0005:  in      a,p1
    mov     r0,#0f2h
    cpl     a
    add     a,r0
    jnc     X001f
    in      a,p1
    mov     r0,#0e3h
    cpl     a
    add     a,r0
    jc      X002f
    jmp     X0005
    ;
    org     1fh
    ;
    X001f:  mov     a,#0a0h
    outl    p2,a
    jmp     X0005
    ;
    org     2fh
    ;
    X002f:  nop     ; data truncated
    ;
    org     32h
    ;
    in      a,p1
    mov     r0,#0a7h
    cpl     a
    add     a,r0
    jc      X003f
    mov     a,#0e0h
    outl    p2,a
    jmp     X0005
    ;
    org     3fh
    ;
    X003f:  in      a,p1
    mov     r0,#0dfh
    cpl     a
    add     a,r0
    jnc     X004f
    mov     a,#0c0h
    outl    p2,a
    jmp     X003f
    ;
    org     4fh
    ;
    X004f:  mov     a,#0e0h
    outl    p2,a
    jmp     X0005
    ;;
    end
    ;
  

Here is an image of the ROM.