Sound Lab Mini-Synth PLUS with Micro Sample & Hold
This project is a reprise of the Sound Lab Mini-Synth with the addition of a Sample and Hold and several circuit and component value changes to improve performance. Even if you have already built a Sound Lab I would recommend this as a completely new project. Of course if you desire to you can mod your existing Sound Lab to match this project. I will call attention to changes from the original Sound Lab.
This project is kind of like two projects in one and requires 2 circuit boards. A Sound Lab Mini-Synth PCB and the new "MICRO SAMPLE AND HOLD" PCB, both are available for sale under the catalog tab. All of the details for the MICRO SAMPLE AND HOLD are presented in the Micro Sample & Hold tab.
Between the schematics, layout drawings, and photos there are over 50 new images here to help you and 16 new PDFs. On many of the kludge photos if you click you will ge a much larger view. I hope you enjoy the project and I know you'll enjoy the outcome. It has turned the cool factor up to beyond 11 on the Sound Lab Mini-Synth.
Well that's enough introduction. On the project pages accessed by means of the tree or the tabs above you'll find the schematics and everything else you need to build this cool project. If you find glaring errors or omissions please let me know so I can correct them. I'll be getting some sound samples up here soon but I need to eat and take a shower first :-) Enjoy!
|A diyer brought a good point to my attention. The "Micro Sample And Hold" board is marked +/-12V and the Sound Lab is marked +/-9V. His question was "Which should I use?". The answer is... either. Both boards should run off of the same power supply whether it is two 9V batteries wired as +/-9V or a bipolar power supply (in the range of +/-9V to +/-15V). There will be no degradation in the operation of the Micro S&H running off of a +/-9V battery supply. The advantage of using a wall wart powered supply is that with batteries you will get a variation in performance as they discharge whereas the wall wart supply is always the same. So there you have it and sorry for any confusion this caused. That's me uttering "DOH!" by the way. :-)|