another construction with an engine 
motor + LDR + disc to obstruct the light (I made several discs with different cuts for different effect)
I added a capo to contain more black otherwise in broad daylight it necessarily works less well
and add a true bypass
a little test with a drone
It’s more the design in the first photo than the specific effect, but this reminded me of Graham Dunning’s Mechanical Techno:
(he does use an optical sensor in a later video, but uses IR sensors, e.g. something like a TCRT5000)
yes i know it ( i have post it in "Inspiration / what u listening " )
but it’s another crazy thing, there is a lot of work !
(besides I will correct my fault in my title “mecHanical”)
Not sure how I missed this. Great stuff. Are the heat sinks on top for led?
no, it’s for nothing except the look 
Superb. I had motorbike engine parts on my first guitar amp to make it look brutal. Many thanks.
