stuartm Posted February 14, 2011 Report Share Posted February 14, 2011 (edited) Anybody else got a Shruthi-1 ? (Scroll down for some audio demos !) I finally got hold of a Shurthi-1 Kit a few weeks ago, a nice little synth by Olivier Gillet from France. I didn't have the pleasure to build a sammichSID, but the two share a certain look (the Shruthi design is obviously inspired by the sammich). read all about it here: http://mutable-instruments.net The Kit that you can order for 150 EUR + shipping includes all the parts, PCBs and acrylic case. The whole thing is very well designed and the building instructions on the website are outstandingly well done, absolutely noob-friendly. Building the thing was a real joy, and even more fun is using this little synth! It's very cleverly done, with a simple but easy to learn menu navigation and some very remarkable features for small Atmel based synth (incl. 12-slot mod-matrix) Sound-wise, it's basically an 8-bit wavetable synth with an analog filter. You can choose between diffrent filter boards, the Kit comes with a filter designed by Olivier using available parts (called SMR-4). Other filter boards are based on CEM or SSM chip, though you'll have to find those old chips yourself. The SMR-4 filter sounds really good, and being based on a small Atmel PIC and using 8 bit waves, this thing does incredibly good sounds. The next batch of Kits is in preparation, so if if you have the chance, try to grab on of these. It's a great DIY synth, maybe some future Midibox projects can also get some inspirations from this! I'll do some audio and video demos soon. Here's some pictures from building the synth (took about 5 hours): http://www.flickr.com/photos/23516000@N04/sets/72157625962940266/with/5410824077/ Edited February 15, 2011 by stuartm Quote Link to comment Share on other sites More sharing options...
Sasha Posted February 14, 2011 Report Share Posted February 14, 2011 I built a Shuthi-1 with modified DIY CEM PCB. It will look bit different at the end as I couldn`t find nice pots, and I don`t like those wobbling Alps that are sold by Farnell. So I`m going with panel mount pots. I like the synth. It sounds pretty good for what it is. It is definitively inspired by Sammich which is good thing, but it is much smaller than Sammich. I`ll probably make them both look like they are from the same "series". Cool project. My recommendations! Quote Link to comment Share on other sites More sharing options...
toadstool Posted February 14, 2011 Report Share Posted February 14, 2011 (edited) I got one recently also and then proceeded to ruin the digital controller PCB :-S. In my haste and excitement I managed to solder the 74XXXX logic chips onto the wrong side of the board and no amount of de-soldering would fix it. A VERY painful experience (thanks IRC friends for being so understanding ;-) and one which I will not repeat. WARNING TO ALL = always read the instructions at least three times before doing anything! Luckily, I managed to get the last remaining PCB from the current batch..... I shall be leaving my ham-fists and cack-hands at the door next time :-) Edited February 14, 2011 by toadstool Quote Link to comment Share on other sites More sharing options...
latigid on Posted February 14, 2011 Report Share Posted February 14, 2011 In my haste and excitement I managed to solder the 74XXXX logic chips onto the wrong side of the board and no amount of de-soldering would fix it. Can haz DIP socketz? :tongue: Quote Link to comment Share on other sites More sharing options...
mazatta Posted February 14, 2011 Report Share Posted February 14, 2011 If I recall, I think its a clearance issue for when the two boards get sammiched together that sockets aren't included in the kit. Quote Link to comment Share on other sites More sharing options...
Wilba Posted February 14, 2011 Report Share Posted February 14, 2011 I haven't built one but I like it. BTW it wasn't "inspired by" sammichSID... sammichSID was first shown while Oliver had already designed his original Shruti-1. But I will agree that some people's cases are obviously similar: "Maya" 1/4 by mutable.instruments, on Flickr Now I'm inspired to do a remix/ripoff of the idea using a Core32 instead :wink: Quote Link to comment Share on other sites More sharing options...
findbuddha Posted February 15, 2011 Report Share Posted February 15, 2011 Now I'm inspired to do a remix/ripoff of the idea using a Core32 instead :wink: :flowers: I'm all for DIY synths using easily available parts Quote Link to comment Share on other sites More sharing options...
Elop Posted February 15, 2011 Report Share Posted February 15, 2011 I haz Shruthies too :flowers: with SMR4, SSM2044, CEM3379 Filterboards but no CEM3379 Chip :whistle: Quote Link to comment Share on other sites More sharing options...
Davo Posted February 15, 2011 Report Share Posted February 15, 2011 I'm pondering a wacky idea of, say, emulating a Minimoog. A Core32 module ought to be able to emulate the three oscillators at one voice. I wonder about more. Then have another core control the simulating core. Behold, the MidiboxMinimoog! Quote Link to comment Share on other sites More sharing options...
nILS Posted February 15, 2011 Report Share Posted February 15, 2011 Davo: Browse the repository and you'll find my "virtual analog" core32 synth. And no, you will not be able to do a "good and authentic" Minimoog Emulation on an stm32. Something that roughly goes in the same direction and is wicked fun to play with - absolutely :) Quote Link to comment Share on other sites More sharing options...
flip Posted February 15, 2011 Report Share Posted February 15, 2011 We built two Shruthi-1s too. Cute little synth. Can do lots of cool sounds. And its extremely easy to build, it even has all the part values on the PCB. Quote Link to comment Share on other sites More sharing options...
stuartm Posted February 15, 2011 Author Report Share Posted February 15, 2011 @toadstool: yeah, the two 74HC's need to be flat on the surface, otherwise they could clash with the filter board, so no socket there. Glad you could grab another PCB @Wilba: thanks for the info, I didn't dig deep into the original Shruti history. A Core32-based synth sounds .... lovely :ahappy: @All: here's some audio demo with a bunch of patches I created during the first days of using the Shruthi. Due to the limitied but clear interface, this was a real joy! Quote Link to comment Share on other sites More sharing options...
rosch Posted February 15, 2011 Report Share Posted February 15, 2011 hey stuartm, cool sounds! why don't you join the soundcloud mutable instruments group? http://soundcloud.co...nts-shruti-trax here's a little loop from some time ago, with the old Shruti-1 (with echo base delay) :http://soundcloud.com/rosch/shruti-1-echo-base Quote Link to comment Share on other sites More sharing options...
Wilba Posted February 15, 2011 Report Share Posted February 15, 2011 @All: here's some audio demo with a bunch of patches I created during the first days of using the Shruthi. Due to the limitied but clear interface, this was a real joy! Which filter board are you using? Quote Link to comment Share on other sites More sharing options...
stuartm Posted February 16, 2011 Author Report Share Posted February 16, 2011 (edited) Which filter board are you using? The SMR-4. @Rosch: thanks, just joined. Edited February 16, 2011 by stuartm Quote Link to comment Share on other sites More sharing options...
stuartm Posted April 9, 2011 Author Report Share Posted April 9, 2011 Here's a video demo I did today: Quote Link to comment Share on other sites More sharing options...
Shuriken Posted April 19, 2011 Report Share Posted April 19, 2011 I build one last week. Surprised how well it sounds. Almost made the mistake with the two shift registers. Thank god i re-read and only soldered 1 chip with 2 legs :whistle: Quote Link to comment Share on other sites More sharing options...
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