From PICLIST@MITVMA.MIT.EDU Fri Nov 15 12:12:35 2002 Received: from cherry.ease.lsoft.com [209.119.0.109] by dpmail10.doteasy.com with ESMTP (SMTPD32-7.13) id A533FA013E; Fri, 15 Nov 2002 12:12:35 -0800 Received: from PEAR.EASE.LSOFT.COM (209.119.0.19) by cherry.ease.lsoft.com (LSMTP for Digital Unix v1.1b) with SMTP id <2.007DD745@cherry.ease.lsoft.com>; Fri, 15 Nov 2002 14:58:28 -0500 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8d) with spool id 8086 for PICLIST@MITVMA.MIT.EDU; Fri, 15 Nov 2002 14:58:23 -0500 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 9136; Fri, 15 Nov 2002 14:57:38 -0500 Received: from smtpzilla3.xs4all.nl [194.109.127.139] by mitvma.mit.edu (IBM VM SMTP Level 320) via TCP with ESMTP ; Fri, 15 Nov 2002 14:57:38 EST X-Comment: mitvma.mit.edu: Mail was sent by smtpzilla3.xs4all.nl Received: from PAARD (a213-84-20-53.adsl.xs4all.nl [213.84.20.53]) by smtpzilla3.xs4all.nl (8.12.0/8.12.0) with ESMTP id gAFJvctQ073773 for ; Fri, 15 Nov 2002 20:57:38 +0100 (CET) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.3416 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: <000101c28ce1$45c16e30$0b00a8c0@PAARD> Date: Fri, 15 Nov 2002 20:57:47 +0100 Reply-To: pic microcontroller discussion list Sender: pic microcontroller discussion list From: Wouter van Ooijen Organization: Van Ooijen Technische Informatica Subject: Re: [PIC]: Many channels of PWM To: PICLIST@MITVMA.MIT.EDU In-Reply-To: <3DD427F4.3E4AFE3@3mtmp.com> X-RCPT-TO: Status: R X-UIDL: 277600726 X-Evolution-Source: pop://mailinglist%40farcite.net@mail.farcite.net/ X-Evolution: 0000079d-0000 > Hi all. I seem to be in a creative mood lately. I came up with an odd > idea for a festive holiday light type item. Problem is I want 15-30 > channels of PWM. I really like the PIC's PWM module for its > simplicity. Does the DA need to be quick? A kid on my club wanted to make an 18-channel DMX-to- 0..10 Volt, for which I suggested one DA (chip or R2R), one opamp, analog 1-to-18 switch, 18 caps, 10 opamps. The details are left as an exercise... Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.