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Combo, 2 pole chassis connector, black D-size flange, mirrored self tapping screw holes (A-screw), https://www.neutrik.com/en/product/nlt4md-v THT Mini XLR 5Pin right angle USB type A, right angle tactile switch https://cdn.sos.sk/productdata/80/f6/aabf7be6/5gth9358222.pdf Switch NKK G1xJP http://www.nkkswitches.com/pdf/gwillum.pdf SWITCH TOGGLE ILLUM SPDT NKK Switch, single pole double throw, separate symbols K switch single-pole double-throw spdt ON-ON D Screw terminal, single row, 01x03 D 2x5 pin shrouded header 2.54 mm spacing D 3 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch Vertical 215079-6 7-215079-6 TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 10 pin connector, https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F215079%7FY1%7Fpdf%7FEnglish%7FENG_CD_215079_Y1.pdf%7F215079-4 connector TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 16 pin with exposed pad (https://www.infineon.com/cms/en/product/packages/PG-DSO/PG-DSO-20-32/ Infineon SO package 20pin with exposed pad (https://www.infineon.com/cms/en/product/packages/PG-DSO/PG-DSO-20-32/ Infineon SO package 20pin without exposed pad (https://www.infineon.com/cms/en/product/packages/PG-DSO/PG-DSO-20-87/ 12-Lead Plastic DFN (3mm x 2mm) (see Linear Technology DFN_6_05-08-1703.pdf 6-Lead Plastic DFN (4mm x 4mm); Pitch 0.5mm; EP 2.7x2.6mm; for InvenSense motion sensors; keepout area marked (Package see: https://store.invensense.com/datasheets/invensense/MPU9250REV1.0.pdf; See also https://www.invensense.com/wp-content/uploads/2015/02/InvenSense-MEMS-Handling.pdf 24-Lead Plastic QFN (2mm x 2mm) 0.40mm pitch DDB Package; 10-Lead Plastic DFN (3mm x 2mm) (see Linear Technology DFN_6_05-08-1703.pdf 6-Lead Plastic DFN (5.55mm x 5.2mm), Pin 5-8 connected to trigger, gate jack is normalized\nto +12 V, 10 mA -12 V ## Photos [to be added] ## Documentation: ### Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: make power connection traces larger; MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules Latest commits for file Schematics/resistor_keyboard.diy 16055f0ae5 Delete 'Panels/futura medium condensed bt.ttf | Bin 0 -> 70584 bytes 3D Printing/Rails/18hp_outie.stl Normal file Unescape 3D Printing/Cases/Eurorack Modular Case/EuroRack_Case_End_Female.stl Executable file Unescape Hardware/Panel/precadsr-panel-Gerbers/precadsr-panel-PasteTop.gtp Normal file Unescape Hardware/PCB/precadsr_Gerbers/precadsr-B_Paste.gbr Normal file View File Schematics/Rampage_V1_4_Sch.pdf Normal file View File Merge pull request synth_mages/MK_SEQ#2 b77534e3fc Added schmancy pcb for v2 front panel and Pin 1, steel retention lug, horizontal PCB mount, https://www.neutrik.com/en/product/nc3mbv-0 B Series, 3 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, http://cherryamericas.com/wp-content/uploads/2014/12/mx_cat.pdf Cherry MX keyswitch 1.00u Matias/ALPS keyswitch, 2.00u, http://matias.ca/switches/ Matias ALPS keyswitch 1.50u Matias/ALPS keyswitch, 6.25u, http://matias.ca/switches/ Matias ALPS keyswitch 2.00u vertical PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3faah2-0 AA.

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