Return-Path: X-Spam-DCC: paranoid 1356; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,SUBJ_RE_NUM autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t9VDP5PG011814 for ; Sat, 31 Oct 2015 14:25:05 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZsW62-0004L6-EB for rs_out_1@blacksheep.org; Sat, 31 Oct 2015 13:21:26 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZsW62-0004Kx-5u for rsgb_lf_group@blacksheep.org; Sat, 31 Oct 2015 13:21:26 +0000 Received: from smarthost01d.mail.zen.net.uk ([212.23.1.7]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1ZsW4y-000289-0e for rsgb_lf_group@blacksheep.org; Sat, 31 Oct 2015 13:21:25 +0000 Received: from [82.70.254.222] (helo=OfficeWin7.lan) by smarthost01d.mail.zen.net.uk with esmtp (Exim 4.80) (envelope-from ) id 1ZsW4m-00020G-GL for rsgb_lf_group@blacksheep.org; Sat, 31 Oct 2015 13:20:08 +0000 Date: Sat, 31 Oct 2015 13:20:06 +0000 From: Chris Wilson Organization: Gatesgarth Developments X-Priority: 3 (Normal) Message-ID: <984267409.20151031132006@chriswilson.tv> To: DK7FC In-Reply-To: <5633C6F8.4080807@posteo.de> References: <1981852865.20151017122027@chriswilson.tv> <1530BFEB-9BC2-4CA2-A7A3-338629A98202@me.com> <308511169.20151029202607@chriswilson.tv> <56328B1F.2080901@posteo.de> <12510142154.20151030112719@chriswilson.tv> <5633C6F8.4080807@posteo.de> MIME-Version: 1.0 X-Originating-smarthost01d-IP: [82.70.254.222] X-Scan-Signature: 4e3b1488273adbbe9757d6bdd5adf219 Subject: Re[2]: LF: Automatic variometer circuit Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4725 Hello Stefan, Friday, October 30, 2015 Thanks for the detailed info, and thanks to Andy `GNT for the info re the caps. I will order the I/C's for this circuit, and I have ordered a 2 RPM reduction drive motor and some micro switches for the limit switches, so will be giving this a go! Much appreciated. > Hi Chris, > My motor draws about 200 mA at 12V. It has about 1 round per 3 seconds i > estimate. Costs are below 10 EUR. You will find something on ebay for > example. > I use end-switches in the construction BTW, see > https://dl.dropboxusercontent.com/u/19882028/LF/variometer%20end%20switches.jpg > just to prevent the wind-up of the cable, antenna wire, coax (would > sound like "crrrrrkftftftftftplingftftftftbuffftftftft...") > 73, Stefan -- Best regards, Chris mailto:chris@chriswilson.tv