@Mahto it's ok i think i figured it out, make up an ordinary 555 timer synth, but instead of a potentiometer i shall use a photo-resistor i'll try it as soon as possible and post it!
I somehow forgot to document the circuit for this one, sorry :-(. If you start with an oscillator circuit built with a 555 timer, you can re-make it by swapping out one of the resistors with a photocell- i think the one that goes between pin 7 and pin 8. You will need to adjust some of the other components as well (I just did it by ear), and you will also need a 555 chip with an output capable of driving a heavy load in order to hear any sound. Good luck!
All together, less than $15. The 555 timer kit it is based on cost us $5 to put together, and most of the rest of the parts came from an old tape deck that I bought at a secondhand shop for $5. The photocell is probably another $1 in small quantities.
Slick.
bnewton81 7 months ago
i NEED to have this-or the schematics for it PLEASE!!
modgemtb 10 months ago
@modgemtb Howdy, unfortunately I don't think I have them anymore!
Mahto 10 months ago
@Mahto it's ok i think i figured it out, make up an ordinary 555 timer synth, but instead of a potentiometer i shall use a photo-resistor i'll try it as soon as possible and post it!
modgemtb 10 months ago
@modgemtb Cool, looking forward to it!
Mahto 10 months ago
Very cool, bravo! I built a simple 555 synth but I really dig the theremin aspect of this circuit, keep it up!
sdwilliams777 1 year ago
@sdwilliams777 Thanks!!
Mahto 1 year ago
haha in norwegian the title would mean "555 hours of synth"
kristoffer1989 1 year ago
@kristoffer1989 Ha! 555 hours isn't too long, I'm sure that could be arranged.
Mahto 1 year ago
nice job
juniortore1 1 year ago
@juniortore1 Thanks!
Mahto 1 year ago
@Mahto no problem!
juniortore1 1 year ago
Ha ha ha ha. It's great!!
W2QYVkz789 2 years ago
Thanks!!!!
Mahto 2 years ago
Now that was brilliant. Nice work...
UserIsAnFBIAgent 2 years ago
Thanks!
Mahto 2 years ago
is the big guy a photoresistor?
porquesifunciona 3 years ago
It to me like the "big guy" is a piece of metal which is connected to a hal effect transistor, which makes for theremin frequency control.
kaloriblossom 3 years ago
schematics??? video tutorial?? i wanna do it dude
simonbour 3 years ago
I somehow forgot to document the circuit for this one, sorry :-(. If you start with an oscillator circuit built with a 555 timer, you can re-make it by swapping out one of the resistors with a photocell- i think the one that goes between pin 7 and pin 8. You will need to adjust some of the other components as well (I just did it by ear), and you will also need a 555 chip with an output capable of driving a heavy load in order to hear any sound. Good luck!
Mahto 3 years ago
hahaha awesome
sp4d3n 3 years ago
ummmmm. take off the photoresistor, Good though
smartpartzzkidd 4 years ago
uh. you're good at playing that...
seriously, it is very cool though. how much would those components cost?
inthefade 4 years ago
All together, less than $15. The 555 timer kit it is based on cost us $5 to put together, and most of the rest of the parts came from an old tape deck that I bought at a secondhand shop for $5. The photocell is probably another $1 in small quantities.
Mahto 4 years ago
totally awesome.
inthefade 3 years ago
sick dude, wat is it
ultimateD010695 4 years ago