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Portable speakers / Speakers on battery

Portable speakers / Speakers on battery

Hi guys. This is my first instructable. Enjoy! So today I am gong to show you how to make from old pc speakers to speakers on battery. It's pretty basic and I have a lot of pictures.

Via Instructables | Posted on 2009.06.03 at 12:12

Sneaking in the Fridge?

Sneaking in the Fridge?

Sounds are coming from the kitchen late at night. One morning a slice of pie is mysteriously missing. What's going on? Who's sneaking into the fridge? Build this simple alarm circuit to catch the midnight snacker in the act! When the refrigerator door is closed, the alarm is quiet.

Via Instructables | Posted on 2009.05.30 at 20:30

This instructable is not complete and I am not currently working on it.Heliostat experiment and finding true north with equatorial mount.

This instructable is not complete and I am not currently working on it.Heliostat experiment and finding true north with equatorial mount.

If a mirror revolves on equatorial mount at 7. 5 degrees per hour will it cast the light of the sun in the same direction all day? This is a very low tech experiment so that I can better understand heliostats.

Via Instructables | Posted on 2009.05.30 at 19:27

AutomaticBattery Charger

AutomaticBattery Charger

This is a automatic battery charger, after completing the charge it turns off automatically. It runs on AC power but you can also run it with DC power.

Via Instructables | Posted on 2009.05.29 at 14:27

Software for solar design. Help improve the explanation.

Software for solar design. Help improve the explanation.

It IS working! The Kyoto trough was placed in the plans and designs section at http:solarcooking. wikia. com by their webmaster a couple of days ago.

Via Instructables | Posted on 2009.05.29 at 11:56

Quick and Easy Battery in 5 Minutes

Quick and Easy Battery in 5 Minutes

Ever wanted to make a battery but didn't have the time or the parts? Well here you go. You can literally make this in 5 minutes with only 4 parts.

Via Instructables | Posted on 2009.05.26 at 15:46

battery holder

battery holder

This instructable is for making a variable AA and or AAA battery holder. The things you'll need are PVC pipe Wire Saw Lighter Drill step 1choose the lengthCut or saw the PVC pipe.

Via Instructables | Posted on 2009.05.24 at 14:16

Extend Life... (of notebook batteries)

Extend Life... (of notebook batteries)

People just seem to keep forgetting the easiest things about notebooks. Especially the battery is a continuing point of frustration. How many times hasn't it happened that when you pull out your notebook, the battery is dead, even if you've just recharged it a few hours before.

Via Instructables | Posted on 2009.05.24 at 12:36

Build a World's Smallest Electronic Shocker! version 2.5

Build a World's Smallest Electronic Shocker! version 2.5

It is good to know if the tiny shocker is on or not, by adding a wonderful invention called the "LED", so you don't risk get bitten by the shocker again! Disclaimer: This shocker can be dangerous if used improperly, it gives out about 400 to 450 volts, so I am NOT responsible if you or anybody are injured or killed by the shocker, the responsibility is yours.

Via Instructables | Posted on 2009.05.23 at 04:04

Humid Climate Solar Dehydrator

Humid Climate Solar Dehydrator

This dehydrator is my version of an upper Mid-west design. I adapted it (as recommended) to fit the windows I had on hand, which I also use for my cold-frames.

Via Instructables | Posted on 2009.05.22 at 00:27


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