# DIY Envelope Generator Push Button?

**URL:** <https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643>\
**Category:** DIY STUFF\
**Created:** [April 15, 2020, 4:24pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643 "2020-04-15T16:24:51Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![casiokid](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@casiokid](https://lookmumnocomputer.discourse.group/u/casiokid)\
**Post date:** [April 15, 2020, 4:24pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/1 "2020-04-15T16:24:51Z")

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So, I plan on building this envelope generator next: [https://www.lookmumnocomputer.com/projects#/simple-envelope-generator](https://www.lookmumnocomputer.com/projects#/simple-envelope-generator)

In LMNC’s YouTube video for this build, it looks like he built the simpler version but added a push button where the LED is connected to the envelope out…is this correct or am I missing something?

The more complicated version has a push button with a switch, but there’s no switch on the module built in the YouTube video…

Just trying to figure out how to wire in the push button to the simpler (no switch) stripboard build…

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**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\
**Post date:** [April 15, 2020, 4:29pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/2 "2020-04-15T16:29:20Z")

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The push button _is_ the switch and some push buttons have LEDs built in.

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**Author:** ![casiokid](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@casiokid](https://lookmumnocomputer.discourse.group/u/casiokid)\
**Post date:** [April 15, 2020, 4:33pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/3 "2020-04-15T16:33:11Z")

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So, in this stripboard layout:

[https://images.squarespace-cdn.com/content/v1/5912db7ee6f2e1435dbab4fd/1553820311899-V84PF608N2Q7HJTF3ED9/ke17ZwdGBToddI8pDm48kJXaLF0R2A3HCOyGRX3wdKB7gQa3H78H3Y0txjaiv\_0fDoOvxcdMmMKkDsyUqMSsMWxHk725yiiHCCLfrh8O1z5QPOohDIaIeljMHgDF5CVlOqpeNLcJ80NK65\_fV7S1UR-dygWYfz7SE\_3ZEIWYj6FfMvRfTnCXrNVGuvqQyU52j55KVrnpc2TQaRVDSFU5IQ/simple+envelope+generator?format=1000w](https://images.squarespace-cdn.com/content/v1/5912db7ee6f2e1435dbab4fd/1553820311899-V84PF608N2Q7HJTF3ED9/ke17ZwdGBToddI8pDm48kJXaLF0R2A3HCOyGRX3wdKB7gQa3H78H3Y0txjaiv_0fDoOvxcdMmMKkDsyUqMSsMWxHk725yiiHCCLfrh8O1z5QPOohDIaIeljMHgDF5CVlOqpeNLcJ80NK65_fV7S1UR-dygWYfz7SE_3ZEIWYj6FfMvRfTnCXrNVGuvqQyU52j55KVrnpc2TQaRVDSFU5IQ/simple+envelope+generator?format=1000w)

There is ALSO an SPDT switch…Are you saying that the button he’s using in the video is an SPDT LED push button?

Thanks for the quick reply!

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**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\
**Post date:** [April 15, 2020, 4:36pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/4 "2020-04-15T16:36:43Z")

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Oh, sorry, my bad. I’ve built two and of course there’s also a switch 🤦‍♀️.

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**Author:** ![casiokid](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@casiokid](https://lookmumnocomputer.discourse.group/u/casiokid)\
**Post date:** [April 15, 2020, 4:38pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/5 "2020-04-15T16:38:35Z")

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So, you built the “more complicated” version?

In the YouTube video, he made the EG with an LED push button, but no switch? I’m just trying to figure out how to connect the push button without using a SPDT switch and basically just build what he did.

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**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\
**Post date:** [April 15, 2020, 6:25pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/6 "2020-04-15T18:25:06Z")

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Yeah, I built the full layout. The trig/gate switch is actually surprisingly handy at times so if you can, I’d say do the same. Otherwise, you just pick which side of the switch you want and remove the circuitry the other side connects to.

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**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\
**Post date:** [April 15, 2020, 6:31pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/7 "2020-04-15T18:31:41Z")

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hello if i understand  
just take off the white :

 ![simple envelope generator](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/7/7f11fc6ffd2130e21107c22f28fc532567dba8de.jpeg)

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**Author:** ![casiokid](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@casiokid](https://lookmumnocomputer.discourse.group/u/casiokid)\
**Post date:** [April 15, 2020, 6:33pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/8 "2020-04-15T18:33:48Z")

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Hey Dud! I actually want to use the push button to trigger the envelope randomly as well as with a CV IN like he does in the video…this looks like you’re removing the push button and leaving the SPDT switch?

Thanks for the reply!

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<div class="post-metadata">

**Author:** ![Dud](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/dud/32/610_2.png) [@Dud](https://lookmumnocomputer.discourse.group/u/Dud)\
**Post date:** [April 15, 2020, 6:41pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/9 "2020-04-15T18:41:07Z")

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sorry, I understood the opposite  
then choose if you prefer the Gate or the Trigg and delete in one  
in my opinion it’s a shame

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<div class="post-metadata">

**Author:** ![casiokid](https://avatars.discourse-cdn.com/v4/letter/c/34f0e0/32.png) [@casiokid](https://lookmumnocomputer.discourse.group/u/casiokid)\
**Post date:** [April 15, 2020, 6:41pm UTC](https://lookmumnocomputer.discourse.group/t/diy-envelope-generator-push-button/643/10 "2020-04-15T18:41:58Z")

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Ok! That’s the second opinion to keep the SPDT switch, so I’ll go with the consensus to keep it!

Thank you!
