Barton Wave Shaper
Info herewww.bartonmusicalcircuits.com
https://youtu.be/bvkvwY6iOfo
![4046wave shaper|637x499]![4046wave shaper|656x500]
Info herewww.bartonmusicalcircuits.com
https://youtu.be/bvkvwY6iOfo
![4046wave shaper|637x499]![4046wave shaper|656x500]
14 Likes
thx, well i need to build one now 
3 Likes
if i can just make a small remark, the resistance figures are not very legible, and R 10.11.12.13.14 (100k for pot) are all write 1, but i refer to the diagram to compare the value, thanks again
1 Like
I replaced the layout above with an edited one. Does this help?
yeh it’s better 
I had all the components (except the CD4046) so I built it this afternoon,
but it lacks a connection on your stripboard.
every 100k resistors of the pot to pin 6 of TL072
6 Likes
Ya know what! I had that in there, and at some point I had a brainfart and removed it! Thanks! I’ll update the layout. I also have a panel layout made if anyone wants it.
5 Likes
Updated the layout. Thanks Dud! I’m guessing this was the reason for the bit of modulation I was hearing that I mentioned in the other thread. Nope, I actually had this connection
4 Likes
maybe another thing to clarify, the correspondence of the pots with the multiplication or division fx
With the pot number of your stripboard :
n ° 1 (pin 4 of CD4040) = / 8
n ° 2 (pin 2) = / 4
n ° 3 (pin 3) = / 2
n ° 4 (pin 5) = 1
n ° 5 (pin 6) = x2
n ° 6 (pin 7) = x4
n ° 7 (pin 9) = x8
I think it’s good to have it for setting up on the panel
4 Likes
Ah! Good idea. Now Updated
Finished a new layout for the Wave Animator, and have it built except pots and jacks. Testing later today. Hope it doesn’t blow up! 
8 Likes
It rarely does! Actually in that respect real live electronics do not in any way come near what you see in the movies. So, no worries.
3 Likes
Yeah, lol! I’m being dramatic.
2 Likes
I know, actually that is what I always found disappointing. I wouldn’t mind some fireworks now and then (although that could be costly, so it better not happen).
3 Likes
Top tip! To avoid electronics exploding you should never build several home made theatrical magnesium flash boxes in the same room.
“The valves! They were screaming man! I ain’t goin back!”
3 Likes
This conjures up a mind picture of a living room wall somewhere with a Farabide-shaped silhouette permanently burned into the wallpaper.
3 Likes
More flash than bang but every exposed circuit nearby got fused with conductive dust and any powered valve popped with a lovely mirror finish.
2 Likes
Nice to see something using the binary ripple counter!
I mentioned previously that you could get 12 Oct divisions with a 555.
I wonder if you can use a 555, then run them through the binary ripple counter to get 12 switchable octaves, then condition their pulse outputs to be other waveforms to produce multiple wave shapes…
2 Likes
I recently updated the Korg MS-20 filter layout with a choise between 6dB or 12dB per Octave roll off. 6dB only works in Lowpass mode btw.
More information here: https://www.eddybergman.com/2019/12/synthesizer-build-part-12-korg-ms20.html
12 Likes
Very neat job. Keep us posted.
2 Likes