CMOS Sequencer Inspired by Handmade Electronic Music written by Nicolas Collins

[potar]

I really love how small you made it! Bad ass!

[Ibringthetruth1]

Jeez, show the insides! letdown.

[RombusEvilBones]

Thanks for posting this. This video has inspired me to create a crazy guitar pedal :D

[harvestarr]

@leafcutter: Hi, schematic would be great :-) even the hi-res photo of sequencer's guts can be usefull...

[ASYLUMTARD]

This is an 8 light sequencer I've constructed out of a 4017 IC. The 15th pin of the chip resets the sequence, which means it can be placed throughout the pins in order to control the length of the loop. I've run into a strange problem, though. Whenever I attach the 15th pin to another pin, it is ignored. But when I break the connection and reconnect it with my hands it works. I've tried attaching a resistor and grounding it, but still nothing.

[leafcutter]

@ASYLUMTARD - a couple of things to check: reset pin (15) to ground through 100k resistor, same with pause pin (13) and of course you must directly ground pin 8 if you have done all that check your battery and that your breadboard is not broken or your wiring worng, by building the circuit again moving all components across a row or two. If this does not help maybe a damaged chip? Let me know if you sort it.

[ASYLUMTARD]

How did you eliminate the initial "pop" of the photocell picking up the LEDs?

[leafcutter]

@ASYLUMTARD well the LDR is a very cheap one and it's rise and fall time is fairly slow so it makes a perfect little ramp up. It's fall time is a bit slower than i'd like but it works ok in this application.

[liquidcalm]

hello!

I've been trying to figure this out for a day or so and no luck, I've got the LED sequencer section down, just no idea how you set it up to control the guitar volume pots. Any tips? love the work n music! - James

[leafcutter]

@liquidcalm the values for all the LED's feed a separate LED in the box which is feeding the different amounts of light to a LDR - this arrangement of LED and LDR is called a Vactrol and can control the level of an audio signal. It's super simple, i'm probably making it sound more complex than it actually is. If I had a bit more time I'd post a video about how the circuit works

[gezshaper1]

Ive built a similar sequencer from this book using a 555 4017 n 4060. Where does the input for the guitar sit. Cant figure out how to trigger from the guitar?

Nice work by the way.

[gezshaper1]

have you got a schematic for your version by any chance?

Cheers

[ChrisLody]

Hey there, nice work! Is the schematic in the book for this sequencer? I have the original release of the book with a different cover to the one you reviewed, it doesn't have this circuit in it. If its in the new one I may have to buy that too, his book inspired me to make noise maker too! Cheers.

[squamam]

hehe... ebay -devil is controlling our mind ;-O

great projects with cmos !!

[superblacknoise]

It's so inspiring to see a musician and masterful

creator of electroacoustic tools, bringing ideas and methods from the digital interface to the physical hands-on realm of pedals!

Looking forward to the first granular loop pedal! (If its already in existence, I'm unaware of it)

A big fan of your music!

[khenry7]

Very interesting John.