My Simple Clock Divider

cablebasher · Joined: Mar 18, 2014 Posts: 3 Location: london

Hey, just wondering if any PCBs were ever made for this module and if so, are they for sale. Could really use one in my euro setup.

If not, does anyone have any photos of breadboards or perfboards of the circuit that I could use for reference.

Following schematics was never my strong point.

Thanks.

fonik · Posted: Tue Mar 18, 2014 3:56 am Post subject:

not yet. just my prototypes, however, i could revive this project. and offer eurorack front panels as well.

LFLab · Posted: Wed Mar 19, 2014 3:26 am Post subject:

Made one on perfboard, quite simple. But my perfboard layouts are done on the fly, and are hardly exemplary!

cablebasher · Joined: Mar 18, 2014 Posts: 3 Location: london

I would definitely buy a PCB and panel if an order was placed.

If not, a breadboard or perfboard photo would be great for reference to build my own.

Cheers.

philoop · Joined: Aug 19, 2011 Posts: 15 Location: hamburg

hallo fonik! i got some spare cd 4020....could i extend the resoulution to 64 128 256? and how?

roglok · Joined: Aug 28, 2010 Posts: 202 Location: uptown

matthias, i have a working stripboard layout for your divider (thanks for sharing!). are you OK with me posting the layout here?

fonik · Posted: Fri Mar 28, 2014 7:39 am Post subject: Re: clock divider

fonik · Posted: Fri Mar 28, 2014 7:40 am Post subject:

roglok · Joined: Aug 28, 2010 Posts: 202 Location: uptown

roglok · Joined: Aug 28, 2010 Posts: 202 Location: uptown

it's been a while since i've done this one, so it's not as compact as my newer layouts, but unless you are building a tight skiff, it should work...

acidblue · Joined: Jun 26, 2009 Posts: 226 Location: The Darkside

Forgive me for asking a stupid question in an old thread.
But what is the 4069 for?
Couldn't you take the signal from the 4024 into the transistors??

fonik · Posted: Mon Jan 09, 2017 1:50 pm Post subject:

you could. i use the 4069 inverters to invert the logic.
a normal divider goes to all OFF when receiving a reset, mine goes to all ON.

you may want to have both options?

acidblue · Joined: Jun 26, 2009 Posts: 226 Location: The Darkside

Ohhhh, pretty clever of you.
Thanks Fonik.

Grumble · Posted: Mon Jan 09, 2017 3:43 pm Post subject:

Posted Image, might have been reduced in size. Click Image to view fullscreen.

I just saw this part of the citcuit and I noticed that the switch S1 is connected wrong in this picture: the switch is drawn in rest position indicated by the small arrow in the pushbutton, but in this position (NC) the way it is connected the Reset pulse coming into connector J2 will have no effect since R1 is at +15V level.
So the resistor R1 should be connected to the other now unconnected pin of the switch S1 being the normally open (NO) connection of the switch.
I thought this might be helpfull for any diy-er who likes to build this module.
Other than this nothing but kudos for Fonik Very Happy

wahee · Joined: Jan 27, 2019 Posts: 6 Location: Belfast

hi bit of a post revival

my device seems to have an issue when using clock or low frequency notes. The original clock is also present in the output signal as well as the division. Like a sort of distortion alternating with the main output. Any idea of what could be wrong. I have built it right as far as I can tell. I have tried various brands of 4024 but they're all the same. Possibly the 4069?
cheers