About
Hello world,
I live in Italy somewhere close to the downtown of Genova.
This blog is a place where I organize and share “a few of the things I do”.
Most of the things I publish I conceive and built in a few hours during my spare time. Many more never see these pages, rather they just hang ’round my mind. Sometimes they start as building blocks which may end in a different project totally diverting my attention from the main project. Some others they just stay there (in my mind) and then get lost. It happens.
You may also have read about 5Volt in Instructables.com or blog.makezine.com … well, that’s me again.
Not all of the things you read of here are very detailed but I always try to provide details on the things which really need. Anyways if you need more or have some questions or simply want to share a comment, please do : I check my blog for comments quite often.
Or just write in case you want to share an idea or simply … because.
Ciao.
Alessandro
Nice job!
Thanks for sharing a great way to recycle components.
It’s a waste just to destroy them.
Keep up the good work!
Complimenti per il lavoro!
Francesco
http://www.noisecollective.net
@Francesco, grazie
Alex
Alex, sul nostro sito ci fa piacere dare spazio ai progetti interessanti come il tuo. Se ti va sentiamoci via mail.
Francesco
Ciao Alex, complimenti per i lavori, il tuo circuito light converter è illuminante! Da qualche anno realizziamo una performance dove i suoni sono prodotti dalle luci. Noi usiamo dei pannelli solari collegati direttamente al mixer audio, il tuo sistema ci sembra più raffinato e lo proveremo sicuramente. Qui di seguito ti segnalo un concerto fatto a mosca:
http://it.youtube.com/watch?v=JKruCQcBFpI&feature=channel_page
e una ripresa fatta a shanghai:
http://www.alterazionivideo.com/new_sito_av/videos/video%20quadro%20sbirri-iPhone.m4v
entrambi realizzati usando i nostri “fotomicrofoni”
Sarebbe bello poter collaborare per sviluppare i progetti, a presto.
andrea
I love the light to sound converter, but what I’d like more is a step by step put together of it without schematics. Some of the students I help (3rd graders) would like to build this kind of project at home but dont know how to read schematics.
@Chris,
sorry I couldn’t reply sooner, I was on a vacation and hadn’t access to the internet. I’m pretty confident I’ll deal with your kind request, after all I’m a nearly missed teacher later sold to the industry …
Talk to you again in a few days. If not please remind me !
Ciao
Alessandro
Cool site! great info!!!
Love the instructables!!!
take care,
Frederick (Freddienando)
Can your magic pov wand clock be modified to be a clock timer? I appreciate your. Great projects!
Regards
Jerry
Hi
can you please help with regard to your low frequency magnetic flux meter. i dont have a JVc loop antenna. so can i coil a copper wire around a pencil?
please reply asap
thank u
You don’t really need the JVC loop antenna. Any other non-conductive rig can be used. I’d not advise for a pen, unless you want to gauge strong, well localized fields. I say strong because the equation shows that the smaller the area of the loops, the more loops are required for same output. This might not be a problem if veeeeeery thin wire is used, otherwise the coil would became bulky and the equation would not hold reliably any longer.
I think that some cardboard the size of the JVC loop antenna is a good tradeoff between number of loops (and thus reliablity of the simple equation) and area that can be gauged .
Best
Alessandro
You mean the magic wand clock, the one on Instructables.com ! Yes, it can be modified as such. Probably one more switch would be required to set the alarm or some trick could be used to enter the “set alarm” mode (say like keeping the trigger button pushed and then push set hours button).
Ciao
Alessandro
Thanks for previous help on lfmf magnetic flux meter. The ICL7660 has a simpler circuit that i found for conversion. Do I need to connect the ICL part that way. Also why are we saying 500uV across the end of the coil. Any particular reason? Can I also use that fact and also that Bcos(wt)= 1uV. What is the reason for that and should I use it too? if the battery itself has millivolt ripple will it not superimpose on the magnetic field?
please help me
thanks in advance
awaiting ur reply
@MIloni, once you’re done with the project send some pictures !
Now, if simpler ICL7660 means fewer capacitors across the power supply (in and out), just leave them in place because they
are necessary regardless the datasheets because to voltage inverter IC is not very stable and has some bad ripple at its output.
You can choose whatever output level you want given a mag field input, just place the values in the equations and find the number of turns you need. 500 uV is a good tradeoff : reasonable number of loops and reasonable amplifier gain for a reasonable household field.
Ciao
Alessandro
Dear Alessandro,
I am exactly following your circuit but am unable to get the output. I have used TC7660 with the circuit you have recommended to reduce the ripple. But i think the number of turns are not enough. I am putting the windings on a foam squarish piece and have put around 80 turns. With your calculations, I should have more turns but atleast I should be able to get some voltage. please help
thanks in advance
Is the dual supply OK ? did you measure it with a voltmeter ?
What is the size of your foam core ?
yes the dual supply is Ok. I measured it with a voltmeter. The battery has discharged so it is less than 9 volts(around 8 volts)
the dimension of the core are 4.5cm*5.5 cm. Thoughthe turns are only 80 and they dont cover this entire area.The number of turns are v less but atleast some voltage should be induced.
@MIloni, Given your figures you should get 60uV per uT against mine 500uV per uT. You should read something, actually, if a reasonable (variable !) magnetic field is applied. Try checking around an heavy transformer (not a mobile phone charger). If you get a complete zero you should check your build, your components and your multimeter.
Best Regards
A.