Cockroft Walton voltage multiplier

A cockroft walton voltage multiplier is a circuit that increase the input voltage.
The circuit is made by stages and each stage is made by 2 diodes and 2 capacitors.
Here is a schematic of a 2 stages voltage multiplier:

I used IN4007 diodes and some high voltage capacitor that I found in a printer power supply circuit; however i reccommend ceramic capacitors with low capacitance and about 3kv of max voltage.
Here are some photos of mine 8 stages, 5kv, cockroft walton multiplier:

Here is a video:

I hope you like this post, if you have any question comment or send me an email to damianoandre@gmail.com

Bye, Dami

Base Filtering Engine: "access is denied" restore tutorial

Hi, today I'm here with a quick tip that I found useful.
I had problems with windows firewall and to solve them I had to start the BFE service but when I tried to do it appeared an error message saying "error 5: access is denied"
Here is a step by step tutorial for solving this problem:
-download this 2 files: file 1 , file 2
-double click FIRST firewall.reg and THEN bfe.reg
-restart your pc
-open "regedit"
-go to HKEY_LOCAL_MACHINE>SYSTEM>CurrentControlSet>services>BFE
-right-click on BFE and click permissions
-check that for "Everyone" is enabled "full control" and if not, do it

-open "services" and now try to start BFE

If you have done everything in the right way it should start.
I hope you like this post, if you have any question comment or send me an email to damianoandre@gmail.com

Bye, Dami

Small diy electric motor tutorial

Hi, today I'm here with a tutorial for creating a small electric motor.

First of all you will need:
-a power source (5v or more)
-some tape
-some wires
-some NON-insulated wire
-some magnet wire
Most of sites suggest to buy it on online stores but finding it is easier than it seems.
In fact most of windings of transformers or inductors are made with magnet wire.
I took my magnet wire form inductors in a printer power supply circuit.

-a quite strong magnet (I took it from a geomag)

Construction:
-Use your insulated wire to create 4/5 loop coil of about 1.5 cm diameter like this:

-Use a knife to cut insulating layer from your wire, at one end of your wire cut all insulating layer, at the other just half, like this:

 

cut insulating layer with a knife

 -Use pilers to model NON-insulated wire to create two supports like this:

 -assemble everything like this:

Making it works:
To make it works, put the magnet near the coil, and plug the two supports to your power supply.
The hardest part is calibration, don't give after 2 minutes, just try making adjustments to the coil or the magnet.

Here is my motor working:

I hope you like this post, if you have any question comment or send me an email to damianoandre@gmail.com

Bye, Dami

Quick tip: update music library android

Hi, this is just a tip that I found useful when I added new songs to my phone but they weren't displayed in the music library.
- Go to settings>apppications>manage applications and find a system service named "media storage"
-Click the button "clear data"
-unmoumt and then mount sd card

And here you are!

I hope you like this post :)

Bye, Dami

Tilt shift effect open source software

Hi, this is a quick post, just to say that I created a simple software (this is the first version, I'll add some improvements) to create tilt shift effect in photos.
Here is the google code project link:
http://code.google.com/p/open-tilt-shift/
This is basically how it works (this photo is from an article of another blog):

 If you want to check the processing code, you can download it from the google code project page.
I hope you like this post, if you have any question comment or send me an email to damianoandre@gmail.com

Bye, Dami

blogging pause

I'm sorry but I have to stop blogging probably up to june because I have to study for school

USB breadboard power supply

Today I'm posting about a simple USB breadboard 5v power supply I think there is nothing to explain, just take your solder and make an useful power supply for all your projects.
Here are some photos of mine:

I know this isn't a great post, but of course this is a nice tool that you can use for all your projects.
If you have any question comment or send me an e-mail to damianoandre@gmail.com

Bye, Dami

Joule Thief

Hi, today I'm posting about Joule Thief.
Joule thief is a small voltage booster.
Here is a video that explain how it works:

If you'd like to build one here is the parts list:
-transistor 2n3904(or equivalent like 2n2222)
-ferrite ring (toroid)
-LED
-1k ohm resistor
-some wires

Here is a simple diagram:

 

Here are other photos of the project:

 I hope you like this post, if you have any question comment or send me an email to damianoandre@gmail.com

Bye, Dami