tag:blogger.com,1999:blog-445515209122469558.post882044019392267118..comments2016-11-18T13:11:55.396-08:00Comments on Groovuino: Build a groove box with Arduino Due, Post1 : Software/HardwareAnonymoushttp://www.blogger.com/profile/17001946823442244575noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-445515209122469558.post-8998561752492366142016-11-18T13:11:55.396-08:002016-11-18T13:11:55.396-08:00Hi, it never harmed my arduino, but if you fear th...Hi, it never harmed my arduino, but if you fear that, you can just add a resistor bridge to lower 5V to 3.3V. With the resistor bridge you can lower the MIDI input but not raise the MIDI output from 3.3V to 5V. But in fact nearly every MIDI instrument works with 3.3V.Anonymoushttps://www.blogger.com/profile/17001946823442244575noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-3497841336409724772016-08-22T08:47:17.549-07:002016-08-22T08:47:17.549-07:00Hello,
Since i got to this page by google search e...Hello,<br />Since i got to this page by google search engine, i am interested in to know bit more about the MIDI IN circuit. The problem with this (as I see) is Pin 8 of opto coupler is tied to 5 volts and results in Rx becoming (0 or 5 volts). But Due pins supports 3.3 volts. It is not recommended to connect Rx to 5v. So I was looking for this solution and got here. I don't to try this circuit since i am afraid of pin getting damaged. Just thought of letting you know. And wanted to know from you guys that whether this circuit worked for you..? I mean the Rx/Tx communication ..? Please let me know.. Thanks in advance.some guy :)https://www.blogger.com/profile/01984730938000333629noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-66294978676501813592015-05-01T05:46:13.798-07:002015-05-01T05:46:13.798-07:00Hi. I built the 4 knob example mono synth but unfo...Hi. I built the 4 knob example mono synth but unfortunately I don't hear any sound from the dac on arduino due.. The dac is tested and working fine. Just not with the mono synth sketch? Any help,would be appreciated. Anonymoushttps://www.blogger.com/profile/14810554043510124589noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-25415505062529808022013-05-07T04:22:22.310-07:002013-05-07T04:22:22.310-07:00Thanks. No problem for the late reply, we all have...Thanks. No problem for the late reply, we all have a life beside the electronic stuff !<br />I sent you a message on arduino forum to give you a mean to send me your code. <br />I will update my library after integrating your code. It's the perfect timing, I just finished sample and osc parts. Now I wanted to integrate the reading of adventurekid wavetables and add some effects (Ditortion, compression, reverb, etc...).<br />It's funny, because the next feature I wanted to add are touchscreens, but only to use as sliders. <br />I use Nintendo DS touchscreen (2$ each !), and LED matrix. It works pretty well, but the packaging is very hard to build. <br /><br />See you<br /><br />GaétanAnonymoushttps://www.blogger.com/profile/17001946823442244575noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-20358943652728950252013-05-07T04:21:16.858-07:002013-05-07T04:21:16.858-07:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/17001946823442244575noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-10012289711524271542013-05-07T02:16:45.774-07:002013-05-07T02:16:45.774-07:00I tried to post the code here, but it is too long....I tried to post the code here, but it is too long.<br />Any way I can send it to you?Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-74766438219587169222013-05-07T02:13:42.065-07:002013-05-07T02:13:42.065-07:00Hi,
sorry for the late reply. I would very much l...Hi,<br /><br />sorry for the late reply. I would very much like participate to the library, however, by the time it took me to reply I guess you can see how busy I am right now. However, my project is very similar to yours except that I do not implement the sampling functionality, but focus on a touch screen as an input device where you can also directly draw or modify waveforms. The rest seems to be pretty similar: 3-osc synths, polyphonic, etc. <br /><br />Also I wanted to modify the SD directory navigation routines so you can directly apply them, but unfortunately I did not find the time to do so. However, I will give you the very first version I wrote, because it is the most readable (but has some limitations).<br /><br />Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-4369417793849607632013-04-08T02:21:59.456-07:002013-04-08T02:21:59.456-07:00Hi,
Thanks in advance. I don't know exactly wh...Hi,<br />Thanks in advance. I don't know exactly what is your project, but if it is similar to mine and you want to share, we can do a mutual library. I want to do a general lib, to make sound with Due. Make synth, samplers, effects, MIDI,... For now, my limitations are :<br />. 4 notes polyphony of 3-osc synths (so 12 wavetable reading in the same time) <br />. 3 one-shot samples at a time.<br /><br />I think it's possible to make better, optimizing access to SD card, and memory of Arduino. So if we join our efforts, it will be easier to optimize.Anonymoushttps://www.blogger.com/profile/17001946823442244575noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-40231287930297284742013-04-06T07:10:04.809-07:002013-04-06T07:10:04.809-07:00Hi,
ah, now I understand why the 5V typically com...Hi,<br /><br />ah, now I understand why the 5V typically coming from a midi connection do not harm the due. The opto-coupler separates any incoming voltage... Thanks.<br /><br />Unfortunately I am not on Github yet (but that is something I should look into in the near future). However, I'll post the code soon and feel free to add it to your project.<br /><br />You can also reach me on the arduino forum under dodgerts...<br /><br />Best,<br />dodgertsAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-26283099547799256972013-04-02T07:00:13.084-07:002013-04-02T07:00:13.084-07:00I found the schematic I was using for MIDI IN. It ...I found the schematic I was using for MIDI IN. It comes from the sparkfun MIDI breakout board from sparkfun :<br />https://www.sparkfun.com/datasheets/BreakoutBoards/BOB-09598-MIDI_Breakout-v11.pdf<br /><br />You have to use a diode and an opto-isolator, unlike as MIDI IN.<br /><br />GaétanAnonymoushttps://www.blogger.com/profile/17001946823442244575noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-31261128508345354102013-04-02T01:37:52.535-07:002013-04-02T01:37:52.535-07:00Hello,
Thanks. This page is just the beginning. I ...Hello,<br />Thanks. This page is just the beginning. I will explain a lot more in the future. For connecting MIDI out, I just use the arduino tutorial :<br />http://arduino.cc/en/Tutorial/Midi<br />For MIDI IN, it's not RX, but TX.<br />For the ADSR, you can look at my env.h of groovuino library : https://github.com/Gaetino/Groovuino/blob/master/env.h <br />In this project, the hardware part is the easiest, because I just use standard conections, on digital and analog in/out. When I will add touchscreens, LCD, and matrix LEDs, I will make a whole subject on the hardware.<br /><br />I'm intersted about the reading of folder structure of adventurekid wavetables. Did you make a guithub or something ? If no, you can post it there, or mp me. Then if you don't mind, I will add it to osc.h library, so it will be possible to choose between thousands of waveforms for each oscillator.<br /><br />GaétanAnonymoushttps://www.blogger.com/profile/17001946823442244575noreply@blogger.comtag:blogger.com,1999:blog-445515209122469558.post-42443860530880933802013-03-30T15:01:21.523-07:002013-03-30T15:01:21.523-07:00Hi,
great project!
I am working on something sim...Hi,<br /><br />great project!<br /><br />I am working on something similar. Could you please comment a bit more on how exactly you connected the midi in/out? Maybe with schematics?<br /><br />I have coded routines to laod wavetables from sd card already. I also use four navigation buttons to maneuver through the folder structure of the adventurekid wavetables on SD. I can share it if you want...<br /><br />I just have started working on the ADSR envelop when I read a reference about your blog on Duane's page...Anonymousnoreply@blogger.com