• Date JoinedFeb 11, 2009
  • Total Views8,278,295
  • Featured %70%
  • Best Answers %20%


Corisa MelC1 month ago

Taga dito ka lang po pala sa Manila. May itatanong lang ako. Medyo noisy yung signal na narereceive sa receiver. May kinalaman ba yung length at yung no. of turns ng coil? Mejo panget kasi :( sana matulungan mo kami hehe

keep up the good work!!!

Jumbodrawn1 month ago

I made the Altoid tin mic circuit, and can hear my voice very faintly behind an extremely loud gargling sound, don't know if it matters, but i replaced the potentiometer with a little blue one that came with my arduino... Do you have any suggestions??

hi i have just seen your project for your bluetooth speaker boombox and i think it;s brilliant what you have done so i was thinking of building on myself and was looking a your wiring diagram and was wondering instead of using the amp you built for the woofer could you just use another digital amp you used with the other speakers and if so do you need the resistors on that line if you could let me know i would be grateful

Hey, Angelo, I need help with the testing part, I want to test how much electricity is generated by only one piezo disc. Do I still need the Mylar capacitor? And how do I connect the piezo disc to the Mylar capacitor then to the digital multimeter?

If you need to send me an Email, then send it to:


mielke117 months ago

do you know if it is possible to use an lm4871 instead of the 8002B ic for the DIY Supercharged Bluetooth Speaker (v2.0) project?

ASCAS (author)  mielke116 months ago

As far as I can recall, they're both the same.

What camera/lighting do you use? I really like your photos.

ASCAS (author)  Jonathanrjpereira6 months ago

I'm using my Nikon D5300 with a 17-55 f/2.8 lens. As for the lighting, I'm just using a simple desk lamp.

Tanmayg7 months ago

What should be the dimensions of pcb in radio transmitter?

wildan.mai9 months ago

is it okay to use 4400 mAH mobile power bank? and i used 11 piezoelectric disc how many1N4007 should i use?

number of diodes doesnt depend on number of piezos.
you should use the 4 diodes as suggested by ascas

1topsarge11 months ago

I need some help on how to wire the battery for the

DIY Phone Controlled FPV Rover (Fast & Agile)

I have the battery and the boards I need for this project, but do not know how to wire the battery. Please help.



strowberycinta11 months ago

hello Angelo..thank you for inspiring many people in electronics field..indeed you are surprisingly famous in my country now regarding your project of piezoelectric that can charge the power bank to the phone..well, I got a question to ask..did you do calculations before you did the project?if yes,may I have a reference on it especially the calculation of piezoelectric voltage and time taken to fully charge the gadget? i hope you can reply me asap..thanks again Angelo :)

nodcah11 months ago

Great profile picture! "I am fun" XD

Good luck preparing for college btw! =D