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KBasic is a very powerful program available for linux, mac and windows platforms. It mocs almost 100% Visual Basic 6. For anyone who wants to make applications for web, standalone, or front-ends to their hardware. It uses a recreation of QBasic with bunch of object-oriented programming sets...
I have built a table to follow the sun through 15 degrees of arc. Using a stepper to change the angle.
Man was it pretty...pretty inefficient.
So, I am thinking of using two gallon jugs at opposite ends of the table connected by a small water pump. The water could be transfered from one...
I have finished my adjustable pitch prototype VAWT.
Ill post some pictures soon. For now, some of my notes.
I started with the base bearing. I found a wheel bearing and race worked REALLY, REALLY well.
I mounted the race in a 6"x6" sheet of 3/4 inch plywood. The race is 4 inches in...
他 对 老 师 的 帮 助 念 念 不 忘
(Always remember your teachers help)
And learn how to spell "taught".
Thanks Sgt.
After a very educational thread with Sgt.Wookie, I have finalized my plan for the solar part of my rooftop unit.
For generation 1: (Overview)
Two 36 volt panels wired in parallel on a balance board (used to tilt the array to follow the sun) with a center fulcrum, using ball-barrings for...
I am awaiting my order for 108 solar cells.
The project for the DC only living space will be partial solar, partial wind.
I have started my calculations for the battery bank and have decided to stay with 6 - 8v DeepCycle batteries. The 8volts have a .11" thick plate size which is very...
I have found a heat pump that runs on DC for home use. Pretty interesting. Uses PWM for varying the compressor speed. They also offer an air-conditioner only version that I will be purchasing. The house currently has natural gas for heat that will have to do for a while. Ultimately solar...
Ok. The turbine for the apartment in my house is coming together.
(Back Story: I am converting the basement in my home to a DC only residence. I will try my hardest to NOT invert DC to AC for any reason. I will try to use pwm'd DC for air-conditioning. And DC lighting, computer, television...
Fujitsu now makes a "mini-split" a/c unit for home/office use. The unit converts to dc at the mains then uses the DC power for compressor and controls. They state stronger, faster operation with lower power usage. The compressor has a sharper rise to efficiency when using DC than AC...
Ok. I just canceled my order for a wind turbine. I just cant spend a $1000 with out spending $250 to see if I can do it myself.
I have no problem paying $250 for an education. With everything I have to pull from, I am confident I will create something....educational. ;)
Any ideas or tips...
In order to cut down on wire-length, I am designing the battery bank in the center of the "house" allowing shortest runs.
Emergency AC-DC converter triggered by uC controlled battery monitor. This will allow me to keep logs of when the batteries hit 55% and what was running when that...
I would really be interested in household items using I could run DC only. My parents have an old blender that has a DC motor and a huge transformer inside. The motor is an 18vDC motor which I ran successfully after removing the transformer. Speed controls and all. This was made in the 1970s...
I am starting an experimental power project for my home with a few cheap solar cells and a small wind turbine and a few deep-cycle batteries.
One of the losses I would like to do away with is DC to AC inverters. I already have a ton of wall-wart powered devices so it makes no sense to me to...
Hi everyone, me again!
I have been designing a 4 bit hybrid computer as some users here allready know. Looking back at the old 4 bit computer, thank god i did not make it, it would have been a waste of components. It had no functionality, no usefulness, could not be used for proper programs...
Ok, its done!
Allthough its missing a tape drive i cant be bothered at the very moment but i will design one for those who want to use my design. Notice that the instructions and decoding is hardwired!
http://www.mediafire.com/?jjgdnwa0t3y
This is a zip with all the schematics. The...
Ok the computer is really starting to take shape. So, the schematics for the ALU ARE DONE!!! and will upload them in a pdf. The accumulator is also done but the main processor...well....lets just say i needs to be checked first.
If someone could check it for me the just send me a message by...
I have completly redesigned the ALU after discovering i need decoupling capacators and open collectors. I am using the Eagle software to draw the schematics and convert to PCB, man....I have never used such a brilliant program for auto-routing. This thing can route ANYTHING!!!
Well I have finished the ALU design and just need to implement this to a PCB. Instead of the traditional "everything on one board" I have designed mini boards that fit in a mini shelf (i mean really small). This way its easier to find a problem and fix.
Design:
Voltage Peak detector
1. Vcc = 12v.
2. Choose VCQ1 output, = 9v.
3. Choose VBQ1 = 8v.
4. VEQ1 = 7.3v.
5. choose RCQ1 = 470 ohms. (to drive a LED output)
6. IRCQ1 = (Vcc - VCQ1) / RCQ1 = ~ 6.38 mA.
7. RE is a split resistance, between the emitter of Q1 and Q2.
RE = ( REQ1 + REQ2) =...
LEDs, 555s, PWM, Flashers, and Light Chasers
by Bill Marsden, courtesy of http://forum.allaboutcircuits.com/
I'm moving this article to blog format to allow me greater flexability in editing. Please, do not comment in the blog, if you do I will delete it. If you want to leave a comment do it...
