<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Texte brut Car";
margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Texte de bulles Car";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:EN-US;}
span.TextebrutCar
{mso-style-name:"Texte brut Car";
mso-style-priority:99;
mso-style-link:"Texte brut";
font-family:"Calibri","sans-serif";}
span.TextedebullesCar
{mso-style-name:"Texte de bulles Car";
mso-style-priority:99;
mso-style-link:"Texte de bulles";
font-family:"Tahoma","sans-serif";}
span.EmailStyle21
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=FR-CA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>After some 6 months of hard work and with the precious help<br>of <b><i>Roman Sowa</i></b> (member of this DIY forum) I finally went through<br>the final tests and am very happy to introduce my new born M114<br>which is a Dual 2msec to 10sec CV-GATE delay.<br>Whatever CV/GATE comes in will be stored and sent back<br>with a specific dialled delay.<br>All this design’s traffic is made around talking SPI devices which are:<o:p></o:p></span></p><p class=MsoNormal><b><span lang=EN-CA style='color:#1F497D'>- 1 x 64k x 8 SPI SRAM<br>- 2 x 16 bits SPI ADC<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-CA style='color:#1F497D'>- 2 x 16 bits SPI DAC<o:p></o:p></span></b></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>Storing the incoming GATE pulses and restoring them delayed was easy task,<br>but the most tedious part was to actually store the 2 incoming <br>CV voltages in 16bits chunks without losing any precision.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>Well <b><i>Roman Sowa</i></b> came with a nice design of 2 SIP modules<br>that did the ADC and DAC conversion within +/1 LSB precision.<br>You can see some pictures below..<br>And.. as usual this is an open source project so all the needed files are available <b><a href="http://www.arcenson.com/projects/Modular/M114_CV-GATE_DELAY/">HERE</a></b>.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>Enjoy !<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-CA style='color:#1F497D'>Jean-Pierre<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-CA style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black;mso-fareast-language:FR-CA'><img border=0 width=559 height=900 id="Image_x0020_1" src="cid:image001.png@01D74DA0.D149A690"></span><span lang=EN-CA style='color:black'><o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black;mso-fareast-language:FR-CA'><img border=0 width=882 height=661 id="Image_x0020_2" src="cid:image002.jpg@01D74DA0.D149A690"></span><span lang=EN-CA style='color:black'><o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA style='color:black'><o:p> </o:p></span></p><p class=MsoPlainText><span style='color:black;mso-fareast-language:FR-CA'><img border=0 width=880 height=660 id="Image_x0020_3" src="cid:image003.jpg@01D74DA0.D149A690"></span><span lang=EN-CA style='color:black'><o:p></o:p></span></p></div></body></html>