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Post by rodney on Feb 26, 2020 2:35:34 GMT
This thread overlaps with a few other treads here but it is intended as a place to drop info about boards that might be of interest for potential sonic AE DIY explorations.
Please feel free to add any interesting things you find.
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Post by rodney on Feb 26, 2020 2:56:01 GMT
First up, Cypress Semiconductor make a range of PSoC boards for their PSoC chips. There are a lot of variations but the cool thing about them is that they combine a processor, usually a Cortex M series with bluetooth and/or wifi PLUS these amazing reconficurable hardware blocks. The latter are set up like a FPGA but, instead of writing VDHL etc. you have a library of ready-made blocks to drop in. this lets you rewire the pins if you need to and add, say an op amp or a 555 timer, a DAC etc. and these magically appear inside the chip. Unfortunately ''70s Moog Ladder Filter' is not in the menu but maybe someone will make one someday?? They also usually have a lot of capsense (capacitive touch sensing) possibilities and many boards come with touch sliders built-in.
Many boards have snap-off sections so you can easily separate sections or discard un-used parts.
I have an old evaluation board in my parts drawer that I'll try to make something with. I want to see if it's possible to make some on-chip Lunetta synths under MCU control. This might be a neat way to eventually get something quite compact, perhaps with tiny touch switches instead of buttons.
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Post by rodney on Mar 2, 2020 21:07:15 GMT
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Post by thetechnobear on Mar 6, 2020 12:14:48 GMT
Yeah I’ve backed Daisy. It can take a 5v supply, but I’m assuming io will be 3,3v ( possibly 5v tolerant?)
What I think/hope is interesting about Daisy is the possibility of building a community around it, that is more music focused - similar to Bela.
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Post by rodney on Mar 20, 2020 9:32:59 GMT
NXP-based vocoder  |
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Post by rodney on Jun 8, 2020 7:12:30 GMT
DipDuino is a DIP-sized arduino-compatible board from the US.
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Post by audiojack on Jun 8, 2020 19:08:46 GMT
Yeah I’ve backed Daisy. It can take a 5v supply, but I’m assuming io will be 3,3v ( possibly 5v tolerant?) What I think/hope is interesting about Daisy is the possibility of building a community around it, that is more music focused - similar to Bela.
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Post by thetechnobear on Jun 12, 2020 17:48:10 GMT
yup, as expected ... not really an issue, but means extra steps for outputs in particular (you'll need an opamp to offset them to the 2.5v) mine daisy is apparently in Spain now, after a week travelling around the US... hopefully should have it by the end of next week. no worries, Ive had something else turn up that is very interesting for AE projects .... watch this space  |
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Post by jcgriggs on Jun 21, 2020 12:41:21 GMT
Hello,
My name is John, I'm new to the forum and still scheming on getting into AE Modular, partially for the DIY possibilities. Lurking on the board, I see a lot of discussion of limiting voltages to acceptable 0-5V range for AE and I wonder if something like this might be of use: www.crowdsupply.com/newsteder/pl1-0-universal-sensor-interface. I am not affiliated with this project in any way - I just noticed it in the Crowd Supply newsletter and connected it with these discussions. I have backed a couple of projects through Crowd Supply (which is why I get the newsletter), but am not otherwise associated with them either. I am not sure if the fact that the board uses RF instead of optical isolation would be a concern or not for audio systems, but otherwise, it seems to fit the bill for bringing 0-30V signals into a 0-5V (or 0-3.3V) world. Hopefully someone will find this useful.
Regards, John Griggs
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Post by rodney on Jun 26, 2020 9:39:19 GMT
The link seems broken at the moment but I'll search it up.Thanks, and welcome to the community. You don't need to be a total convert to get a lot out of this forum. |
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Post by rodney on Jun 26, 2020 9:41:44 GMT
For people wanting to prototype stomp boxes, here is a neat thing that blugs into the end of a breadboard to give you guitar in and out and power supply. For feeding into AE modules, you'd need to bump the voltage up with an Op Amp and back down to guitar level again afterward. Something I'm keen to try out. |
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Post by jcgriggs on Jun 26, 2020 11:03:02 GMT
The link seems broken at the moment but I'll search it up.Thanks, and welcome to the community. You don't need to be a total convert to get a lot out of this forum. Sorry about that - I think they must have something set up to prevent deep links - I just clicked on the link in the newsletter and copied it out of the browser for my post. If you go to the base site: www.crowdsupply.com/ and search for "pl1-0-universal-sensor-interface" it will find the page (at that same URL). Hopefully this thing is actually useful - I'd hate to send people on a goose chase for nothing .
Regards, John
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Post by timb0bsteve on Jun 26, 2020 15:03:27 GMT
thetechnobearI just received my Daisy and saw this. I mistakenly thought it was 0-5V ranges on the output. What type of circuit is needed to convert 0-3.3V ranges to 0-5V ranges for use with AEM? Apologies I'm a total electronics noob, which is why I wanted the Daisy... I'm more comfortable in software land
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Post by thetechnobear on Jun 27, 2020 14:20:05 GMT
Have a look at my YouTube series ( there’s a post on here about it) In episode 2/3 I talk about bringing the voltage down into a useable ( and safe) range. Spoiler alert : voltage divider (This is most important thing to avoid damaging Daisy) To amplify the from 3.3v to 5v , use an opamp, I use an mcp6004, The circuit can be found in many places , and in the diy section there is a link to a great video which explains how to use opamps |
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cedaa
New Member
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Post by cedaa on Jul 23, 2020 22:10:52 GMT
timb0bsteve thetechnobearI received my Daisy Seed in the mail earlier this month (along with a few of the Electrosmith VCO, VCA, VCF submodules) and I'm really interested in turning the Daisy into an AE module. The information about voltage regulators and opamps for dealing with the differing voltages is really helpful, thetechnobear. I'm new to electronics and DIY, so trying to learn as much as possible. Excited to see what you two come up with!
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Post by MikMo on Jul 23, 2020 22:51:09 GMT
Really interesting boards
Sorry couldn't help it :-)
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Post by admin on Jul 23, 2020 23:05:11 GMT
timb0bsteve thetechnobearI received my Daisy Seed in the mail earlier this month (along with a few of the Electrosmith VCO, VCA, VCF submodules) and I'm really interested in turning the Daisy into an AE module. The information about voltage regulators and opamps for dealing with the differing voltages is really helpful, thetechnobear. I'm new to electronics and DIY, so trying to learn as much as possible. Excited to see what you two come up with! Hi cedaa, just to let you know that robertlanger has also backed the Daisy project with a view to integrate it somehow with the AE. It could be a while before we see a definite prototype though, as he is very busy as usual. But bear in mind that this integration is at least somewhere on the roadmap. This year is mostly dedicated to foster and grow the options for DIY for the AE system which has been initiated with GRAINS and then with the DIY and BRAEDBOARD modules. I believe that these are just the beginning and that other similar projects will be unveiled later this year. |
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Post by MikMo on Jul 24, 2020 7:57:56 GMT
Yes it would be really useful if the 3.3V microcontrollers could somehow (easily) be integrated in the 5V AE universe.
When Robert started the project, 5V was the natural choice, but now there is a gap between the processing power of the 5V Arduinos and the newer 3.3V processors
The newer Teensy boards are also only 3.3V.
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cedaa
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Post by cedaa on Jul 24, 2020 10:38:07 GMT
Hey admin , That's really cool to hear that Robert has his eyes on Daisy and intends to integrate it with AE. I'm quite excited about Daisy's yet-to-be-released Max integration. I ordered a few of the DIY modules and they arrive next week |
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Post by rodney on Feb 19, 2021 23:45:55 GMT
there are more ATTiny chips out there than just the ATtiny 84 and ATTiny 85 Microchip have made some breakout boards that make it easier to mess with more exotic Tiny chips that might have useful stuff like fast PWM outs, dedicated serial processors, UARTs etc. that might be good for MIDI things etc. |
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Post by rodney on Jun 27, 2021 23:23:42 GMT
this board lately...
I'm looking at the Seeduino Xiao board lately ... The Pros: 1. it's very cheap 2. looks well-documented 3. compact size 4. can be through-hole or surface-mounted 5. has one 10bit DAC out 6. can power from 5v 7. some good example code out there already 8. generally a bit quicker than arduino processors Cons: 1. It is 3.3v, so all inputs and outputs will need to be scaled down and up accordingly. wiki.seeedstudio.com/Seeeduino-XIAO/ manufacture's website A Japanese guy has made some fantastic budget eurorack modules with very low external parts. He's also made his code available.
We'd need to add correction for 5v and 3.3v compatibility ...
The Oz financial year is drawing to a close, so I feel a shopping frenzy coming on. |
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Post by rodney on Jun 27, 2021 23:33:15 GMT
His blog has a LOT of low-cost project ideas, including a Mozzi-based additive tone generator and other cool stuff, mostly with source code and a video demo.
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Post by rodney on Jan 9, 2022 20:19:15 GMT
Adafruit have a new little 2040 board for python-oriented folk who want to make their own keyboards. Using all I/O, you could scan a matrix of 100 keys. So, potentially, 50 MIDI keys with velocity sensing (assuming we have two switches for each key and measure the time interval between them to figure out velocity). I assume that can still be polyphonic, since ordinary computer keyboards handle multiple key presses? www.tomshardware.com/reviews/adafruit-kb2040 |
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