tag:blogger.com,1999:blog-1249615655314260587.post5607881159893666890..comments2024-02-21T01:04:06.333-05:00Comments on Synth Hacker: DIY Ribbon Controller - CVChiphttp://www.blogger.com/profile/10352943033779293161noreply@blogger.comBlogger23125tag:blogger.com,1999:blog-1249615655314260587.post-20957631164334006282022-03-13T06:14:43.699-04:002022-03-13T06:14:43.699-04:00Synth Hacker: Diy Ribbon Controller - Cv >>&...Synth Hacker: Diy Ribbon Controller - Cv >>>>> <b><a href="http://7url.top/vsbWb?94" rel="nofollow">Download Now</a></b><br><br>>>>>> <b><a href="http://7url.top/vsbWb?97" rel="nofollow">Download Full</a></b><br><br>Synth Hacker: Diy Ribbon Controller - Cv >>>>> <b><a href="http://7url.top/vsbWb?98" rel="nofollow">Download LINK</a></b><br><br>>>>>> <b><a href="http://7url.top/vsbWb?55" rel="nofollow">Download Now</a></b><br><br>Synth Hacker: Diy Ribbon Controller - Cv >>>>> <b><a href="http://7url.top/vsbWb?41" rel="nofollow">Download Full</a></b><br><br>>>>>> <b><a href="http://7url.top/vsbWb?67" rel="nofollow">Download LINK</a></b> 82 Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-35889295874416023852022-03-13T06:14:18.925-04:002022-03-13T06:14:18.925-04:00Synth Hacker: Diy Ribbon Controller - Cv >>&...Synth Hacker: Diy Ribbon Controller - Cv >>>>> <b><a href="http://7url.top/vsbWb?94" rel="nofollow">Download Now</a></b><br><br>>>>>> <b><a href="http://7url.top/vsbWb?97" rel="nofollow">Download Full</a></b><br><br>Synth Hacker: Diy Ribbon Controller - Cv >>>>> <b><a href="http://7url.top/vsbWb?98" rel="nofollow">Download LINK</a></b><br><br>>>>>> <b><a href="http://7url.top/vsbWb?55" rel="nofollow">Download Now</a></b><br><br>Synth Hacker: Diy Ribbon Controller - Cv >>>>> <b><a href="http://7url.top/vsbWb?41" rel="nofollow">Download Full</a></b><br><br>>>>>> <b><a href="http://7url.top/vsbWb?67" rel="nofollow">Download LINK</a></b> Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-38294877353437835572021-08-17T23:44:36.180-04:002021-08-17T23:44:36.180-04:00This comment has been removed by a blog administrator.opbestcom7https://www.blogger.com/profile/11813448454671528140noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-75895731374615461192021-02-16T15:32:19.755-05:002021-02-16T15:32:19.755-05:00Presuming that you have the bottom of the SoftPot ...Presuming that you have the bottom of the SoftPot to ground, the question is whether you have the top of the SoftPot to fixed voltage (like 3.3V or like 5V) or whether you have it floating. If you connected it to a fixed voltage, then you should have the wiper's pin set simply to INPUT. Or, if the top of the pot is floating, you would set the wiper's pin to INPUT_PULLUP.<br /><br />As for the noise, you will likely want to add some averaging via your Arduino sketch. For example, can set up a running average where you do something like:<br /><br />float myRunningAverage = 0.0; //a global variable<br />float weighting_new = 0.5; //how strongly to use the new data [0.0->1.0]<br /><br />float myReadFunction(void) {<br /> float new_value = (float)analogread(A0);<br /> myRunningAverage = (weighting_new)*new_value + (1.0f-weighting_new)*myRunningAverage;<br /><br /> return myRunningAverage;<br />}<br /><br />This style of running average is also knows as a 1st-order lowpass IIR filter. To do less smoothing, make "weighting_new" be larger. To do more smoothing, make "weighting_new" be smaller.<br /><br />Chip<br />Chiphttps://www.blogger.com/profile/10352943033779293161noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-48427445359730388912021-02-16T13:32:45.375-05:002021-02-16T13:32:45.375-05:00On my arduino and scope I see noise on my analog i...On my arduino and scope I see noise on my analog input when I press the SoftPot. I have set it up like a voltage divider with the wiper into the A0<br /><br />I've tried INPUT_PULLUP and INPUT and I'm still getting noise on top of the signal. Any suggestions for solving this?cguerinhttps://www.blogger.com/profile/10207317343639557326noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-78085552872512203972019-10-03T21:19:03.583-04:002019-10-03T21:19:03.583-04:00Is it possible/practical to put MIDI and CV capabi...Is it possible/practical to put MIDI and CV capability into a single ribbon? Can the Arduino handle it? If so, do you have any tips on how to do this?Benjamminhttps://www.blogger.com/profile/00183700787919228398noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-18016270775107028352019-01-15T21:31:05.637-05:002019-01-15T21:31:05.637-05:00There's an article here talking about making a...There's an article here talking about making a ribbon from anti-static bag material<br /><br />https://www.paia.com/ProdArticles/dual-ribbon-howto.htm<br /><br />and I've seen something somewhere about using videotape for the purpose as well. But I paid the $20 for a SoftPot and consider it money well spent... aside from my not having a stash of anti-static bags or videotapes to raid, I have a lot more confidence in the reliability and durability of the SoftPot.Rich Holmeshttps://www.blogger.com/profile/01850551887150988095noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-3393357838119153152019-01-15T21:27:00.797-05:002019-01-15T21:27:00.797-05:00Thanks for these blog posts! I just finished build...Thanks for these blog posts! I just finished building one for my Mother-32. I made a few minor tweaks to the code and mounted the SoftPot a little differently but that's it. Works great!Rich Holmeshttps://www.blogger.com/profile/01850551887150988095noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-30157305287184970032018-12-20T07:56:02.946-05:002018-12-20T07:56:02.946-05:00Yeah, you got it. The softpot's "wiper&q...Yeah, you got it. The softpot's "wiper" is floating when you are not touching the pot. So, yes, you the the pull-up. As a result, when you are NOT touching it, the indicated voltage is up at 5v, which is easily detected, and which tells you to turn off the note.<br /><br />ChipChiphttps://www.blogger.com/profile/10352943033779293161noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-38069754116698525952018-12-19T14:44:14.209-05:002018-12-19T14:44:14.209-05:00So this question is two years old and this blog is...So this question is two years old and this blog is two years inactive but... having been confused by the same thing myself and having, I think, figured it out, I thought I'd post what I think is the answer. You normally could read a potentiometer by putting 5V across it and connecting the wiper to an analog input pin. This is a voltage divider with the two resistances being the two ends of the pot. Then you'd get a voltage hopefully linear in position from near 0 at one end to near +5 at the other end, which is good. However: with the Softpot, unlike a normal pot, when you remove contact the wiper disconnects and is floating. Then you'd get ill defined behavior at the input pin. The solution is to enable the input's internal pullup resistor and not connect +5V to the Softpot. Now you have a voltage divider where the two resistances are the pullup resistor and one end of the Softpot, and if the wiper is disconnected then the voltage at the input pin gets pulled up to +5V. Otherwise it ranges from near zero to something depending on the full resistance of the Softpot (10k) and the pullup resistor (typically 20k to 50k), maybe 1 to 2 volts. Which makes it easy to tell when the gate should be on or off but gives you a rather small voltage range which the Arduino needs to scale up to 0 to 5V. But at least it's well behaved when the wiper's disconnected. Anyway I think this is right!Rich Holmeshttps://www.blogger.com/profile/01850551887150988095noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-74931810687159615152018-08-15T02:25:19.405-04:002018-08-15T02:25:19.405-04:00It's a pity those soft-pots are somewhat price...It's a pity those soft-pots are somewhat pricey. Are there any DIY options to create reliable soft-pot ribbon?progmarshttps://www.blogger.com/profile/09977967768292903199noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-54274939961310800772018-01-14T11:18:06.586-05:002018-01-14T11:18:06.586-05:00Hi Chip: I'm really new to this stuff. I hav...Hi Chip: I'm really new to this stuff. I have a few questions . . .<br /><br />1) There seems to be several variants of the MCP4922 (E/P, E/SL, etc.). Which version should I get.<br /><br />2) Do you have a suggested source on the capacitors?<br /><br />3) Do you have a suggested source on the Stackable headers for the Arduino Micro?<br /><br />4) In photo 4 there's a blue resistor that I don't see in the wiring diagram. What is it? <br /><br />My Best:<br /><br />Jimedwardcolihttps://www.blogger.com/profile/12848912806267674059noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-1940075619462185432017-06-22T13:37:41.574-04:002017-06-22T13:37:41.574-04:00Thanks Chip and Kerryg! I think I'll try Synth...Thanks Chip and Kerryg! I think I'll try Synthrotek's kits, and if I just can't get a linear enough response I'll get some help with the Arduino.Jon Robertshttps://www.blogger.com/profile/04201630640054299503noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-33867841137682945622017-04-17T14:08:01.904-04:002017-04-17T14:08:01.904-04:00Heya Jon - I found something called the Synthrotek...Heya Jon - I found something called the Synthrotek Riblet that might make experimentation easier for folks in our slightly more tech-challenged state :) : http://store.synthrotek.com/Riblet-DIY-Kit_p_721.htmlkerryghttps://www.blogger.com/profile/12423739145453015014noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-77860232872820809302017-04-17T14:04:04.075-04:002017-04-17T14:04:04.075-04:00Thanks for your response, Chip! My interest in the...Thanks for your response, Chip! My interest in the Softpot would be as a controller mounted on the face of a midi-enabled bass guitar. The pitch tracking is great for that, it's an old Peavey Midibase which I use to trigger a Moog Minitau, but reaching for the knobs of the minitaur is awkward while playing so I came up with the idea of directly manipulating CV via softpots mounted under my thumb. The CV on the Moog is self powered, is it not?kerryghttps://www.blogger.com/profile/12423739145453015014noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-79944637102592422912017-04-17T13:35:20.734-04:002017-04-17T13:35:20.734-04:00I think what you're asking for is an all-analo...I think what you're asking for is an all-analog ribbon. You can certainly wire the ribbon to the TRS connector, but you need something to apply a voltage across the ribbon via the TRS connector (say +5V to one end of the ribbon and ground to the other end of the ribbon). When you do that, you will certainly get a voltage out of the ribbon that is related to where you've touched the ribbon. Maybe that's all that your looking for, which would be cool.<br /><br />While that setup is a lot simpler than mine (yours has no software), you also would get no gate signal to tell your CV synth that you're touching the synth. In your case, once you stopped touching the ribbon, the voltage being output by your device would be poorly defined and would wander about (unless you also attached a pull-up or pull-down resistor, which is what I'd recommend).<br /><br />The ribbon is also not as linear as you might like, meaning it's tough to play the exact pitch that you want. Using the Arduino lets you figure out a calibration so that the response is nice and linear with position.<br /><br />Don't let my arguments *for* including the Arduino sway you, though. If you're not into Arduino, then you should hack using whatever tools that you do know how to use. Just go for it! Smell the solder!<br /><br />Chip Chiphttps://www.blogger.com/profile/10352943033779293161noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-9946639207371678732017-04-17T13:01:08.305-04:002017-04-17T13:01:08.305-04:00I'm in exactly the same boat and would love to...I'm in exactly the same boat and would love to know this (I have the impression the answer is "yes" but would love confirmation)kerryghttps://www.blogger.com/profile/12423739145453015014noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-77644234529525881632017-03-27T17:01:47.204-04:002017-03-27T17:01:47.204-04:00Hey Chip; I'm a musician, but I know next to n...Hey Chip; I'm a musician, but I know next to nothing about electrical engineering or programming. However, I don't really need a Midi capable controller; could I build a CV ribbon controller by simply soldering a soft-pot to a TRS connector? It feels too simple to me, but I've spent the last few hours trying to figure this out online and by dismantling a few expression pedals and the barrier of a lack of basic electrical knowledge is getting in the way. Jon Robertshttps://www.blogger.com/profile/04201630640054299503noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-10095930284584051422016-11-01T21:06:29.129-04:002016-11-01T21:06:29.129-04:00Catching up with your adventures. Kudos on all the...Catching up with your adventures. Kudos on all the new work on the Polysix, it makes me want to get a Fatar, more Arduinos (I have a few which just arrived) and re-do all the work you did on mine. But first, I need to troubleshoot the KLM-367 board again (sigh).<br /><br />Let's go!<br /><br />YashJhttps://www.blogger.com/profile/03645176977280965583noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-62051918483744269422016-09-28T10:42:46.820-04:002016-09-28T10:42:46.820-04:00Hello, I am slightly confused by the ribbon connec...Hello, I am slightly confused by the ribbon connection and code. <br />I bought a couple arduino Pro Micros to do this with. <br />But your schematic uses only two pins of the 3 on the rippon, doesnt say which it does use, but the code referenes 3 connections on the ribbon?<br />Also the Pro Micro doesnt have the A5 connection, so is it as simple as changing any reference to A5 in the code to A6? (How many relevant references is there? I think I saw you on FB synth DIY so we could take it over there where I can post up the stripboard Ive used as well ;) Davidhttps://www.blogger.com/profile/04614059532624860800noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-51381884786456124612016-09-01T16:32:19.714-04:002016-09-01T16:32:19.714-04:00i want to add ribbon controller with modulation + ...i want to add ribbon controller with modulation + pitch for my yamaha psr e 423???? is it possible???? if possible how, please describe me the detail process am worst in electronics and i don't wanna ruin my keyboard Anonymoushttps://www.blogger.com/profile/17441140578627803482noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-35795742504992429152016-09-01T09:10:31.414-04:002016-09-01T09:10:31.414-04:00Good evening, please can I have your email address...Good evening, please can I have your email address? Mine is extremdinghy@gmail.com Thank you for your time.yasshttps://www.blogger.com/profile/16480817136496393750noreply@blogger.comtag:blogger.com,1999:blog-1249615655314260587.post-75885729377920864202016-04-07T20:28:05.084-04:002016-04-07T20:28:05.084-04:00Kickstarter? I'd go for a few of these....Kickstarter? I'd go for a few of these....Anonymousnoreply@blogger.com