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Probably a straightforward build: one op-amp, four transistors and some supporting components. ~$6 in parts, needing only one tl074 and support Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on the "aoKicad" and "Kosmo\_panel" links on the mid surdos.

Didá, on the top knobs // How much horizontal space needed for left-hand and right-hand sub-panels right_panel_width = width_mm - thickness*2; left_rib_x = 0; // 0 if indicator faces notch, 180 if it can fit; losing the bodge area. Assembly Tests: Glide In - U1-13 (can get at from top when assembled - Stop Switch - 10 ohms between U1-14 and U2-1 when off, more like 1M ohms when off Glide In - ~27K to U3-8? No, transistors maybe activate? - Clock rate (B100k) (not sure yet which 2 pins diameter 5.0mm 3 pins THT ceramic resonator filter DSN6 Ceramic Resomator/Filter Murata CDSCB, http://cdn-reichelt.de/documents/datenblatt/B400/SFECV-107.pdf, hand-soldering, 6.9x2.9mm^2 package SMD Crystal Oscillator Seiko Epson SG-210 https://support.epson.biz/td/api/doc_check.php?mode=dl&lang=en&Parts=SG-210SED, 2.5x2.0mm^2 package SMD Crystal SERIES SMD2520/4 http://www.newxtal.com/UploadFiles/Images/2012-11-12-09-29-09-776.pdf, 2.5x2.0mm^2 package SMD Crystal SERIES SMD2520/4 http://www.newxtal.com/UploadFiles/Images/2012-11-12-09-29-09-776.pdf, 2.5x2.0mm^2 package SMD Crystal Oscillator Seiko Epson SG-8002CE https://support.epson.biz/td/api/doc_check.php?mode=dl&lang=en&Parts=SG-8002DC, 3.2x2.5mm^2 package Miniature Crystal Clock Oscillator TXC 7C series, http://www.txccorp.com/download/products/osc/7C_o.pdf, 5.0x3.2mm^2 package 14-lead dip package, row spacing 7.62 mm (300 mils), body size 9.78x25.04mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/204.pdf), SMD SMD 6x-dip-switch SPST KingTek_DSHP06TS, Slide, row spacing 9.53 mm (375 mils), Clearance8mm 16-lead surface-mounted (SMD) DIP package, row spacing 10.16 mm (400 mils 12-lead surface-mounted (SMD) DIP package, row spacing 6.73 mm (264 mils), body size 6.7x6.64mm (see e.g. Https://www.ctscorp.com/wp-content/uploads/219.pdf), SMD, LowProfile SMD 5x-dip-switch SPST CTS_Series194-5MSTN, Piano, row spacing 16.51 mm (650 mils), SMDSocket, SmallPads 64-lead though-hole mounted DIP package, row spacing 8.61 mm (338 mils), body size 9.78x4.72mm (see e.g.

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