Received: from PCH.mit.edu (18.7.21.50) by mail.efplus.com (192.168.0.8) with Microsoft SMTP Server (TLS) id 8.3.485.1; Tue, 26 May 2020 21:05:34 -0700 Received: from PCH.MIT.EDU (localhost.localdomain [127.0.0.1]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 04R3sKUi021702; Tue, 26 May 2020 23:55:49 -0400 Received: from outgoing-exchange-1.mit.edu (OUTGOING-EXCHANGE-1.MIT.EDU [18.9.28.15]) by PCH.mit.edu (8.14.7/8.12.8) with ESMTP id 04R3sIDo021699 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Tue, 26 May 2020 23:54:19 -0400 Received: from w92exedge3.exchange.mit.edu (W92EXEDGE3.EXCHANGE.MIT.EDU [18.7.73.15]) by outgoing-exchange-1.mit.edu (8.14.7/8.12.4) with ESMTP id 04R3rjJZ015456 for ; Tue, 26 May 2020 23:53:45 -0400 Received: from oc11expo17.exchange.mit.edu (18.9.4.48) by w92exedge3.exchange.mit.edu (18.7.73.15) with Microsoft SMTP Server (TLS) id 15.0.1293.2; Tue, 26 May 2020 23:53:54 -0400 Received: from oc11exhyb2.exchange.mit.edu (18.9.1.98) by oc11expo17.exchange.mit.edu (18.9.4.48) with Microsoft SMTP Server (TLS) id 15.0.1365.1; Tue, 26 May 2020 23:54:17 -0400 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (104.47.70.104) by oc11exhyb2.exchange.mit.edu (18.9.1.98) with Microsoft SMTP Server (TLS) id 15.0.1395.4 via Frontend Transport; Tue, 26 May 2020 23:54:17 -0400 Received: from MWHPR19CA0003.namprd19.prod.outlook.com (2603:10b6:300:d4::13) by DM6PR01MB4745.prod.exchangelabs.com (2603:10b6:5:67::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3021.24; Wed, 27 May 2020 03:54:16 +0000 Received: from CO1NAM03FT015.eop-NAM03.prod.protection.outlook.com (2603:10b6:300:d4:cafe::60) by MWHPR19CA0003.outlook.office365.com (2603:10b6:300:d4::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3045.17 via Frontend Transport; Wed, 27 May 2020 03:54:15 +0000 Received: from mail-ej1-f44.google.com (209.85.218.44) by CO1NAM03FT015.mail.protection.outlook.com (10.152.80.167) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3021.23 via Frontend Transport; Wed, 27 May 2020 03:54:15 +0000 Received: by mail-ej1-f44.google.com with SMTP id z5so26284858ejb.3 for ; Tue, 26 May 2020 20:54:15 -0700 (PDT) From: RussellMc To: Microcontroller discussion list - Public. Sender: "piclist-bounces@mit.edu" Date: Tue, 26 May 2020 20:53:35 -0700 Subject: Re: [EE] Placement of LED resistor Thread-Topic: [EE] Placement of LED resistor Thread-Index: AdYz3BJc6H5G3BjUSmyr0iu/os5FsA== Message-ID: References: List-Help: List-Subscribe: , List-Unsubscribe: , In-Reply-To: Reply-To: Microcontroller discussion list - Public. Accept-Language: en-US X-MS-Exchange-Organization-AuthAs: Anonymous X-MS-Exchange-Organization-AuthSource: TS500.efplus4.local X-MS-Has-Attach: X-Auto-Response-Suppress: All X-MS-Exchange-Organization-SenderIdResult: Pass X-MS-Exchange-Organization-PRD: mit.edu X-MS-TNEF-Correlator: received-spf: Pass (protection.outlook.com: domain of gmail.com designates 209.85.218.44 as permitted sender) receiver=protection.outlook.com; client-ip=209.85.218.44; helo=mail-ej1-f44.google.com; dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=uenxhiSrt9N63Zt822nk2t28kOx8UQo63I8qcaGROwY=; b=E2z4/Fcpw2Je2oot3qoGxUoRpVOTwG/AspBworx5j1VPeBhqiTnM8TULPFQHtjzOlV lhBFOgfhyzoJ/VAkGgxv+CGecN9el9K+ltu+fcaxfibXZMj9XzE+9OQFbONZTGBIuTif eV6FsryKHsedeDIyr+tWPF/Vw/XUiiMk/7cHSqZJ/jAlwxoQgzQVdqkWKSCyiRv7CHfz CYRbGH+R3et3ml4/JMPbvdM97Hr46rQp12zF61t5R38bmtmvWu+WRt7oVgmUfN5ghl4X 5vSaQTUwZB1WMhlJi880mjK4mLrz4Vj+vvh6as0Pbhcs+jXNrlSilL9RlymYMPmZBjIU pE0A== authentication-results: spf=pass (sender IP is 209.85.218.44) smtp.mailfrom=gmail.com; mit.edu; dkim=pass (signature was verified) header.d=gmail.com;mit.edu; dmarc=pass action=none header.from=gmail.com;compauth=pass reason=100 errors-to: piclist-bounces@mit.edu list-id: "Microcontroller discussion list - Public." list-post: x-beenthere: piclist@mit.edu x-mailman-version: 2.1.6 x-received: by 2002:a17:906:8514:: with SMTP id i20mr3764003ejx.298.1590551653020; Tue, 26 May 2020 20:54:13 -0700 (PDT) x-topics: [EE] x-content-filtered-by: Mailman/MimeDel 2.1.6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 > > The answers so far are correct PROVIDE THAT there are no other connection= s > made to the point between the LED and resistor. If there is any electrical connection at the midpoint to any other part of the circuitry then the order will probably matter. A circuit and/or complete desription would help. Russell > --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .