<div><div><div><div>I've not had boards made by mail yet. What about those boards that just have lots of holes? If the circuit is simple that's another way to do it.</div><div><br></div><div>I'm betting someone will come forward with a suggestion of where to get a board made. I don't think it's very expensive.</div>
<div><br></div><div>Another list where people are into circuit boards and stuff is OttawaRobotics.org. </div><div><br></div><div>A metal detector is a great project to get kids into making things (and electronics). </div>
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<br><br><div class="gmail_quote">On Wed, Jan 11, 2012 at 12:22 PM, <span dir="ltr"><<a href="mailto:eric.schmidt@rogers.com">eric.schmidt@rogers.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:10pt;font-family:verdana,helvetica,sans-serif"><div><span>Thanks Darcy;</span></div><div><br><span></span></div><div><span>Yes, messy and fraught with the possibility of screwups, but I wanted us to do the "full DIY" process at least once.</span></div>
<div><span><br></span></div><div><span>Who would you suggest for the mail-order route, though? I'm curious about the cost of that option.</span></div><div><span><br></span></div><div><span>cheers,</span></div><div><span>Eric</span></div>
<div><br></div> <div style="font-family:verdana,helvetica,sans-serif;font-size:10pt"> <div style="font-family:times new roman,new york,times,serif;font-size:12pt"> <font face="Arial"> <hr size="1"> <b><span style="font-weight:bold">From:</span></b> Darcy Whyte <<a href="mailto:darcy@siteware.com" target="_blank">darcy@siteware.com</a>><br>
<b><span style="font-weight:bold">To:</span></b> <a href="mailto:eric.schmidt@rogers.com" target="_blank">eric.schmidt@rogers.com</a> <br> <b><span style="font-weight:bold">Sent:</span></b> Wednesday, January 11, 2012 12:08:17 PM<br>
<b><span style="font-weight:bold">Subject:</span></b> Re: [Lab] Questions: 1) DIY PCB etching and 2) O-scope in lab?<br> </font><div><div class="h5"> <br><div><div>I noticed an scope in the lab<br>
Are you bringing the project to the next modlab?</div>
<div> etching sounds messy<br>
Perhaps mail order can solve that one?</div>
<div>Or perhaps a DNC machine? Not the best method but it might be easier </div>
<div>On Jan 11, 2012 12:01 PM, <<a rel="nofollow" href="mailto:eric.schmidt@rogers.com" target="_blank">eric.schmidt@rogers.com</a>> wrote:<br><blockquote style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:10pt;font-family:verdana,helvetica,sans-serif"><div>So, I've bitten the bullet after lots of lurking on the list, and have initiated our first "dad and kids" electronics project (ok, it'll be vastly "dad with kids looking on")<br>
</div><div>We're going to make this metal detector: <a rel="nofollow" href="http://makeprojects.com/Project/Treasure-Finder/1113/1" target="_blank">http://makeprojects.com/Project/Treasure-Finder/1113/1</a></div><div>
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I'm just wondering how many of you have done PCB etching using the toner-transfer method.</div><div>After going through a bunch of youtube videos on the etching process, some of them mention the stinkyness/toxicity of the fumes from the acid bath. I bought FeCl3 etchant from Active, but now I'm thinking that maybe HCL+H202 would be better, as described here:</div>
<div><a rel="nofollow">http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/</a><br></div><div><br></div><div>Regardless of etchant, though, in mid-winter, doing it in the garage is probably out of the question due to the cold (or is it?) but I assume I have to ventilate the heck out of whatever space we use.</div>
<div><br></div><div>any guidance on the etching process?</div><div><br></div><div>Next question: for this project, you need to tune the reference coil using either an oscilloscope or a frequency-counting multimeter. Does the Lab have either of these? Cuz I don't...</div>
<div><br></div><div>thanks in advance for any wisdom.<br></div><div><br></div><div>cheers,</div><div>Eric<br></div></div></div><br>_______________________________________________<br>
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