ive made a few "theremin" circuits with 555's and this is by far the coolest . i had a similar idea but using a lamp on a goose neck . your tube idea trumps that nonsense in a heartbeat . i had fun building this and i have been playing it a lot too . its great for karoakieing Adrian Belew guitar solo's .
Yep! Spock and Kirk were both here yesterday at he DinoFab Lab getting their Tri-Corders recalibrated and I asked... "Say guys, can I use the theme song in my video" Spock answered... "Since it is in the public domain your question is most illogical". So yeah... it's all good!
Yes they are... approximately anyway. The tone can wander a bit due to variables like battery voltage, resistance at the on switch, ambient light etc.
You would connect it to the positive output between the 100mF cap and the speaker with the wiper going to ground. It acts as a voltage divider. Do a Google image search for "volume control schematic" and you'll find examples.
nice, what kind of video cmera are you using the quality of the youtube vid is great too. oh by the way I got one of your 555 logo items from cafepress, great idea.
what is photocell?
Seattle4639 4 months ago
keep practicing! :) nice idea!
simonjtaylor212 5 months ago
Great project and enjoyed the presentation.
I guess I should build the Model 2732 version of this !
slider2732 6 months ago
I wanna replace the photocell with a pot what value should i take?
pietzeekoe 8 months ago
@pietzeekoe 5K - 10K should work
dinomaui 8 months ago
Completely useless and utterly wonderful! Great job! Love it!
LA6NPA 8 months ago
Excellent job!!
mudball100 9 months ago
be careful with the cat near the soldering iron!!
brandon14872 10 months ago
@brandon14872 lol, he knows it's hot. :)
HackaweekTV 10 months ago
ive made a few "theremin" circuits with 555's and this is by far the coolest . i had a similar idea but using a lamp on a goose neck . your tube idea trumps that nonsense in a heartbeat . i had fun building this and i have been playing it a lot too . its great for karoakieing Adrian Belew guitar solo's .
peteytwofinger 11 months ago
Nice idea for the slider! Add a second slider and you'll have a Theremin :-)
frankbuss 1 year ago
Hope you got permission from the Star Trek people.
thunderhammer 1 year ago
@thunderhammer
Yep! Spock and Kirk were both here yesterday at he DinoFab Lab getting their Tri-Corders recalibrated and I asked... "Say guys, can I use the theme song in my video" Spock answered... "Since it is in the public domain your question is most illogical". So yeah... it's all good!
dinomaui 1 year ago
Sweet! I gotta build myself one of these.
vk2zay 1 year ago
awesome, are the marks on the sliding LED holder for musical notes?
Rasec77 1 year ago
@Rasec77
Yes they are... approximately anyway. The tone can wander a bit due to variables like battery voltage, resistance at the on switch, ambient light etc.
dinomaui 1 year ago
I love the idea, but if i wanted to add a volume control, where would i add the potentiometer ?
Timfc1 1 year ago
@Timfc1
You would connect it to the positive output between the 100mF cap and the speaker with the wiper going to ground. It acts as a voltage divider. Do a Google image search for "volume control schematic" and you'll find examples.
dinomaui 1 year ago
@dinomaui Thanks, I was wondering if it would mess with the 555, but i remembered it was an output, thanks all the same.
Timfc1 1 year ago
...a simple but fun project, nicely done and brilliantly presented ;-) Well done Dino!
pvarelas 1 year ago
Thanks. The camera is a JVC Everio GZ-MS110.
Thanks for visiting the online store. :)
dinomaui 1 year ago
nice, what kind of video cmera are you using the quality of the youtube vid is great too. oh by the way I got one of your 555 logo items from cafepress, great idea.
HamRadio2008 1 year ago
Nice !
drOffset 1 year ago
Good stuff!
tymkrs
whisk0r 1 year ago
sweet :)
sciguy14 1 year ago
nice work!!!!
111Daferu111 1 year ago