tag:blogger.com,1999:blog-8044784353067686026.post7142308827602641628..comments2024-02-25T10:43:28.969+00:00Comments on m0xpd's <i>'Shack Nasties'</i>: Digital TS Rocks!m0xpdhttp://www.blogger.com/profile/13241728975907453128noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8044784353067686026.post-83911164502845087992014-03-08T06:46:19.597+00:002014-03-08T06:46:19.597+00:00Hi Kenneth
I'm afraid resistors in parallel wi...Hi Kenneth<br />I'm afraid resistors in parallel with potentiometers aren't that simple... <br /><br />A 1M resistor across a 1M potentiometer will indeed give a 500k overall resistance, but the resistance to the wiper / slider will not be a nice, linear 0 to 500k range.<br /><br />The decision to use half the 1M pot was taken only on its resistance - any range of control values could be mapped in software onto the 500k range of resistances available in the bottom half of the pot's travel (although, as you say, there's only 7 bits of resolution in an ordinary MIDI signal).<br />m0xpdhttps://www.blogger.com/profile/13241728975907453128noreply@blogger.comtag:blogger.com,1999:blog-8044784353067686026.post-31136651259432487472014-03-07T22:44:16.463+00:002014-03-07T22:44:16.463+00:00Couldn't you have just put a 1M resister acros...Couldn't you have just put a 1M resister across the high and low pins of the 1M digipot rather than just using just the first 128 positions. Wouldn't that have increased your resolution while giving you a 500 K ohm pot? Midi control messages only go from 0-127, so that might have also been why you did that. Yes?Anonymoushttps://www.blogger.com/profile/14263957464092490535noreply@blogger.com