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here is a link to my site with pictures of the night<br><br><a href="%20http://www.storydad.com/forum/index.php/topic,1397.new.html#new"> http://www.storydad.com/forum/index.php/topic,1397.new.html#new</a><br><br>and some of my toys<br><br><div>> Date: Mon, 18 Jul 2011 17:27:46 +1200<br>> To: chchrobotics@lists.linuxnut.co.nz<br>> From: markaren1@xtra.co.nz<br>> Subject: Re: [chbot] .5 offset voltage<br>> <br>> Hi Wallace,<br>> <br>> So the transducer connects to the 0.1999mV display and nowhere else ?<br>> <br>> What display range do you want (for the input range of 0.5 to 4.5V) ?<br>> <br>> Is the unit battery powered with any shared grounds ?<br>> <br>> Tell me more about the transducer.<br>> <br>> Mark<br>> <br>> <br>> At 05:08 p.m. 18/07/2011, you wrote:<br>> >Hi Mark<br>> ><br>> >I have a digital display from Jaycar. It runs on 5 volts. The input <br>> >is 0-2 volts. The scaling is no problem. I have only one power <br>> >supply. I have used a LM7805 for the display and probably a second <br>> >one for the transducer. I do however need to float the display's <br>> >ground 0.5 volts above the transducer's ground. It probably needs to <br>> >be adjustable to clear the actual offset from the transducer. Most <br>> >voltage regulators start at 1.2 volts so I'm stuck for a simple solution.<br>> ><br>> >Cheers Wallace<br>> ><br>> ><br>> ><br>> ><br>> >_______________________________________________<br>> >Chchrobotics mailing list Chchrobotics@lists.linuxnut.co.nz<br>> >http://lists.ourshack.com/mailman/listinfo/chchrobotics<br>> >Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/<br>> >Web site: http://kiwibots.org<br>> >Meeting Time and Location uncertain while Science Alive is out of action.<br>> ><br>> >When replying, please edit your Subject line to reflect new content.<br>> <br>> <br>> _______________________________________________<br>> Chchrobotics mailing list Chchrobotics@lists.linuxnut.co.nz<br>> http://lists.ourshack.com/mailman/listinfo/chchrobotics<br>> Mail Archives: http://lists.ourshack.com/pipermail/chchrobotics/<br>> Web site: http://kiwibots.org<br>> Meeting Time and Location uncertain while Science Alive is out of action.<br>> <br>> When replying, please edit your Subject line to reflect new content.<br></div> </div></body>
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