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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
YMfos 10 step sequencer add clocks input
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9 volts



Joined: Jul 15, 2012
Posts: 28
Location: Au

PostPosted: Sun Mar 13, 2016 5:07 pm    Post subject: YMfos 10 step sequencer add clocks input Reply with quote  Mark this post and the followings unread

Hi there, I want to add an external clock input to my 10 step sequencer. I think the input should go in where the step button is connected. Has anyone done this or have any thoughts on it? Thanks
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Hubaswift



Joined: Jul 06, 2016
Posts: 91
Location: Canada

PostPosted: Thu Sep 08, 2016 6:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

I'm planning on building the 10 step sequencer soon as well and was disappointed by the lack of external clock. Here are some of my thoughts: The step button probably just completes a circuit in order to tell the sequencer to move to the next step, whereas an external clock would be a 5V signal. I suppose you could measure what the voltage is running through the switch when pushed, then make sure that your external 5V source gets scaled down to that voltage??? I'm no electronics engineer so I am likely wrong, but It's what I had been considering trying.
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yoho



Joined: Aug 22, 2015
Posts: 13
Location: Netherlands

PostPosted: Fri Sep 09, 2016 5:39 am    Post subject: Reply with quote  Mark this post and the followings unread

Simplest solution would be:
Input - diode - resistor to the junction R37/R38/C6
With taking something like 47k for the resistor and the diode "pointing" to the junction.
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Hubaswift



Joined: Jul 06, 2016
Posts: 91
Location: Canada

PostPosted: Fri Sep 09, 2016 6:44 am    Post subject: Reply with quote  Mark this post and the followings unread

yoho wrote:
Simplest solution would be:
Input - diode - resistor to the junction R37/R38/C6
With taking something like 47k for the resistor and the diode "pointing" to the junction.
Thanks, my PCB is on the way and once I get to complete it and try out this mod, I'll post how well it works. I'm actually really surprised that the 10-step doesn't come with an external clock.
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yoho



Joined: Aug 22, 2015
Posts: 13
Location: Netherlands

PostPosted: Fri Sep 09, 2016 12:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hubaswift wrote:
yoho wrote:
Simplest solution would be:
Input - diode - resistor to the junction R37/R38/C6
With taking something like 47k for the resistor and the diode "pointing" to the junction.
Thanks, my PCB is on the way and once I get to complete it and try out this mod, I'll post how well it works. I'm actually really surprised that the 10-step doesn't come with an external clock.

It is one of Ray's earlier designs, so probably there was no need when designed. His newer sequencer proves a lat of progress in insight.
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Hubaswift



Joined: Jul 06, 2016
Posts: 91
Location: Canada

PostPosted: Fri Sep 09, 2016 5:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

yoho wrote:
Hubaswift wrote:
yoho wrote:
Simplest solution would be:
Input - diode - resistor to the junction R37/R38/C6
With taking something like 47k for the resistor and the diode "pointing" to the junction.
Thanks, my PCB is on the way and once I get to complete it and try out this mod, I'll post how well it works. I'm actually really surprised that the 10-step doesn't come with an external clock.

It is one of Ray's earlier designs, so probably there was no need when designed. His newer sequencer proves a lat of progress in insight.
Do you happen to know where I could buy a pcb for the 16-step sequencer? or a file so that I could make my own. I can't seem to find them Sad
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