# 3 x. 3340 on stripboard. Adding all the features

**URL:** <https://lookmumnocomputer.discourse.group/t/3-x-3340-on-stripboard-adding-all-the-features/449>\
**Category:** DIY STUFF\
**Created:** [March 27, 2020, 2:37am UTC](https://lookmumnocomputer.discourse.group/t/3-x-3340-on-stripboard-adding-all-the-features/449 "2020-03-27T02:37:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Farabide](https://avatars.discourse-cdn.com/v4/letter/f/ecc23a/32.png) [@Farabide](https://lookmumnocomputer.discourse.group/u/Farabide)\
**Post date:** [March 27, 2020, 2:37am UTC](https://lookmumnocomputer.discourse.group/t/3-x-3340-on-stripboard-adding-all-the-features/449/1 "2020-03-27T02:37:36Z")

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Hi. My next big build is to complete three of Sam’s 3340 oscillators on stripboards as a triple bank. I’m looking to add most of the features of the performance version, especially the reference voltage but minus the tuner. I’ve also been working on a semi-modular type hardwired routing and sync approach to link the three together. Before I go reinventing the wheel did Sam or anyone else ever create a "full featured " of the 3340 on stripboard?  
I seem to remember Sam talked about a triple osc version during one of the DIY module vids. I’m sure it was part of a “where its all going” comment and he showed off a selection of modules which included 3 osc. (Or did I imagine that?)

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**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\
**Post date:** [March 27, 2020, 8:00am UTC](https://lookmumnocomputer.discourse.group/t/3-x-3340-on-stripboard-adding-all-the-features/449/2 "2020-03-27T08:00:15Z")

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This thread covers my attempt to build upon Sam’s stripboard layout. Feel free to hack. It’s implements both sync and fm.

> [@AS3340 VCO /w hard/soft sync, FM modulation](https://lookmumnocomputer.discourse.group/t/as3340-vco-w-hard-soft-sync-fm-modulation/249):
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> Hey yall, I got some time today to take a look at my old VCO build. Couldn’t figure out what the hell was wrong with it, so i just built it again. Rather than just be boring, i also attempted to add the other features that were not included in the original stripboard design. Things like soft / hard sync and FM modulation. I dont really have the capacity to check that this works right as is, i did my best given the diagram in the datasheet and some example schematics on Electric Druid. All i ca…