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Groups > comp.arch.embedded > #29149
| From | Don Y <blockedofcourse@foo.invalid> |
|---|---|
| Newsgroups | comp.arch.embedded |
| Subject | Re: Poor man's PWM |
| Date | 2020-01-29 00:17 -0700 |
| Organization | A noiseless patient Spider |
| Message-ID | <r0rbja$ubc$1@dont-email.me> (permalink) |
| References | <r0o0mu$c6l$1@dont-email.me> |
On 1/27/2020 5:53 PM, Don Y wrote: > What problems might I encounter with this approach? (I'm > mainly worrying about visual artifacts) (sigh) I've been considerate and responded to many comments UNRELATED TO THE QUESTION THAT I POSED (see above). But, aside from Dimiter's comments, most have completely ignored this. Gee, let's talk about processor choice, next! Or, programming language! Or, component selection! Or, vendor selection! Or... I am fully capable of implementing the algorithm proposed -- in various different ways for various different "loads" (LEDs aren't the sole application... but, hey, let's digress into even more unrelated areas to avoid the question posed!). Where I need assistance is in anticipating how LEDs driven in this SORT OF manner could potentially have undesirable appearances. Moving from incandescent and magnetic ballast lighting to CFLs and LEDs leaves a great many different visual environments in which a device is viewed. It would really be annoying if my scheme suffered in some particular office/lab/home/outdoor environment that I hadn't anticipated during the design phase. If you can offer some concrete comments wrt that issue, great! I get it -- it's not a run-of-the-mill sort of knowledge domain. No shame in admitting your ignorance! I've done so with my question, here. Feel free to pursue your own implementations on your own dime. Great if you choose to share them -- in their final form, ready for critique -- here. We can then play endless "what if" games: what if 10 indicators? 100? what if they are replaced with solenoids? or resistive heaters? what if more levels? less levels? what if we try and drive 30 servomotors while running the displays? 60? replace servo motors with stepper motors? run a full network stack? *multiple* network interfaces? live packet routing? IPSEC? etc. Gee, the fun we can have (and the time we can waste)! The local University is supposedly renowned for its optics department. I will assume that I can find someone there who will have, at least, a theoretical knowledge of how it relates to vision. Unfortunately, it is a VERY large organization so it will take me time to find the right folks -- I had hoped someone HERE might have direct experience in the subject :<
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Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-27 17:53 -0700
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-27 19:29 -0800
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-28 20:11 -0700
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-28 20:11 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-28 11:29 +0100
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-28 20:34 -0700
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-28 20:32 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-29 12:53 +0100
Re: Poor man's PWM Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2020-01-28 14:43 +0100
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-28 12:03 -0800
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-28 20:54 -0700
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-28 21:54 -0800
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-29 00:17 -0700
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-28 23:40 -0800
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-29 00:54 -0700
Re: Poor man's PWM Paul Rubin <no.email@nospam.invalid> - 2020-01-29 00:04 -0800
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-29 02:17 -0700
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-29 13:21 +0100
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-29 09:51 -0800
Re: Poor man's PWM Paul Rubin <no.email@nospam.invalid> - 2020-01-29 10:07 -0800
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-29 10:14 -0800
Re: Poor man's PWM Paul Rubin <no.email@nospam.invalid> - 2020-01-29 10:28 -0800
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-29 11:40 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-30 10:25 +0100
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-30 08:06 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-30 21:21 +0100
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-30 15:08 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-31 01:17 +0100
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-01-30 17:21 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-31 10:59 +0100
Re: Poor man's PWM Rick C <gnuarm.deletethisbit@gmail.com> - 2020-02-01 10:18 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-30 10:20 +0100
Re: Poor man's PWM Tom Gardner <spamjunk@blueyonder.co.uk> - 2020-01-30 10:13 +0000
Re: Poor man's PWM Paul Rubin <no.email@nospam.invalid> - 2020-01-29 09:57 -0800
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-30 10:29 +0100
Re: Poor man's PWM Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2020-01-29 16:34 +0100
Re: Poor man's PWM Dimiter_Popoff <dp@tgi-sci.com> - 2020-01-28 17:39 +0200
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-28 19:58 -0700
Re: Poor man's PWM Dimiter_Popoff <dp@tgi-sci.com> - 2020-01-29 18:54 +0200
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-01-29 00:17 -0700
Re: Poor man's PWM David Brown <david.brown@hesbynett.no> - 2020-01-29 13:39 +0100
Re: Poor man's PWM Paul Rubin <no.email@nospam.invalid> - 2020-01-29 10:08 -0800
Re: Poor man's PWM Don Y <blockedofcourse@foo.invalid> - 2020-04-27 20:13 -0700
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