<div dir="auto">Interesting... So, can you "scratch" back and forth on the delay time knob in order to go back and forth in recorded time? :-)<div dir="auto"><br></div><div dir="auto">/mr</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Den tors 20 maj 2021 23:52Jean-Pierre Desrochers <<a href="mailto:jpdesroc@oricom.ca">jpdesroc@oricom.ca</a>> skrev:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="FR-CA" link="blue" vlink="purple"><div class="m_8015205397814919185WordSection1"><p class="MsoNormal"><span style="color:#1f497d">Hi all,<u></u><u></u></span></p><p class="MsoNormal"><span style="color:#1f497d"><u></u> <u></u></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:<u></u><u></u></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<u></u><u></u></span></b></p><p class="MsoNormal"><b><span lang="EN-CA" style="color:#1f497d">- 2 x 16 bits SPI DAC<u></u><u></u></span></b></p><p class="MsoNormal"><span lang="EN-CA" style="color:#1f497d"><u></u> <u></u></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.<u></u><u></u></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/" target="_blank" rel="noreferrer">HERE</a></b>.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA" style="color:#1f497d"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-CA" style="color:#1f497d">Enjoy !<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA" style="color:#1f497d">Jean-Pierre<u></u><u></u></span></p><p class="m_8015205397814919185MsoPlainText"><span lang="EN-CA" style="color:black"><u></u> <u></u></span></p><p class="m_8015205397814919185MsoPlainText"><span lang="EN-CA" style="color:black"><u></u> <u></u></span></p><p class="m_8015205397814919185MsoPlainText"><span style="color:black"><img border="0" width="559" height="900" id="m_8015205397814919185Image_x0020_1" src="cid:image001.png@01D74DA0.D149A690"></span><span lang="EN-CA" style="color:black"><u></u><u></u></span></p><p class="m_8015205397814919185MsoPlainText"><span lang="EN-CA" style="color:black"><u></u> <u></u></span></p><p class="m_8015205397814919185MsoPlainText"><span style="color:black"><img border="0" width="882" height="661" id="m_8015205397814919185Image_x0020_2" src="cid:image002.jpg@01D74DA0.D149A690"></span><span lang="EN-CA" style="color:black"><u></u><u></u></span></p><p class="m_8015205397814919185MsoPlainText"><span lang="EN-CA" style="color:black"><u></u> <u></u></span></p><p class="m_8015205397814919185MsoPlainText"><span style="color:black"><img border="0" width="880" height="660" id="m_8015205397814919185Image_x0020_3" src="cid:image003.jpg@01D74DA0.D149A690"></span><span lang="EN-CA" style="color:black"><u></u><u></u></span></p></div></div>_______________________________________________<br>
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