# Stripped down OBA design **URL:** \ **Category:** DIY STUFF\ **Created:** [June 17, 2021, 4:54am UTC](https://lookmumnocomputer.discourse.group/t/stripped-down-oba-design/3657 "2021-06-17T04:54:33Z")\ **Posts on this page:** 1\ **Showing post:** 2
**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:** [June 17, 2021, 7:24am UTC](https://lookmumnocomputer.discourse.group/t/stripped-down-oba-design/3657/2 "2021-06-17T07:24:51Z")
It’s depend of the level of your external signal (guitar, mic, audio…) There’s maybe some circuit’s idea here the right part is an amplifier signal part > [@AI006 Stomp Adapter Schematic Help](https://lookmumnocomputer.discourse.group/t/ai006-stomp-adapter-schematic-help/96): > > So I got the idea to build a Stomp Adapter from [AI Synthesis](https://aisynthesis.com/product-category/eurorack/)’ - [Schematic](https://aisynthesis.com/wp-content/uploads/2018/12/stomp-adapter.pdf) that is available for the [AI006](https://aisynthesis.com/product/ai006-eurorack-stomp-box-adapter/) from another member here in the Forum. I am curious if anyone is willing to take a look at my Strip Board Layout to see if it matches correctly with the Schematic! I am having a bit of confusion with the To Synth portion of the schematic… I know… ridiculous… it looks like the easiest bit… but simple things always become beyond over complicated in my head… lol. So I want to make sure that… For piezzo mic > [@Analog Output Mikrokosmos](https://lookmumnocomputer.discourse.group/t/analog-output-mikrokosmos/720): > > @analogoutput mentioned his first Kosmo module, Mikrokosmos, in the build thread, but I think it deserves its own thread in the Kosmo Modules category. I was lucky enough to trade one with him and I’m super happy with it. The attached Piezo is a lot of fun, but it’s also a great preamp for any piezo-equipped item, like a rusty old Kalimba I have. I will try to get some sound samples put together at some point, but for now here are my build pictures. I sanded down a bit of the back side solder… --- _[View the full topic](https://lookmumnocomputer.discourse.group/t/stripped-down-oba-design/3657)._