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BackIf any cost extra Design rules: Smallest drillable hole size (plated or not) (JLC = 0.3mm Largest drillable hole size (plated or not) (JLC = 6.35mm plated Minimum text thickness (JLC = 0.153mm Anything that stands out *If minimum order size is less than 3, use the two keybeds in storage; decipher key matrix, work out either MC or dumb resistor array to output correct volts for each key. Build a MIDI->CV module ** Hagiwo's cheap arduino version and https://github.com/elkayem/midi2cv which it is based on a decade counter with internal through-hole thread WP-THRSH (https://www.we-online.de/katalog/datasheet/74651194.pdf REDCUBE THR with internal through-hole thread WP-THRBU (https://www.we-online.de/katalog/datasheet/74650074.pdf REDCUBE THR with internal through-hole thread WP-THRSH (https://www.we-online.de/katalog/datasheet/74651174.pdf REDCUBE THR with internal through-hole thread WP-THRBU (https://www.we-online.de/katalog/datasheet/74650194.pdf REDCUBE THR with internal through-hole thread WP-THRSH (https://www.we-online.de/katalog/datasheet/74651173.pdf REDCUBE THR with internal through-hole thread WP-THRBU (https://www.we-online.de/katalog/datasheet/74650094.pdf REDCUBE THR with internal through-hole thread WP-THRBU (https://www.we-online.de/katalog/datasheet/74650073.pdf screw terminal block Metz Connect Type059_RT06304HBWC, 4 pins, pitch 3.5mm, size 53.5x8.3mm^2, drill diamater 1.1mm, pad diameter 2.1mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00232_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block WAGO 236-509 45Degree pitch 5mm size 35x9mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00082 pitch 10mm Mallory low-profile piezo buzzer, https://mspindy.com/spec-sheets/AST1109MLTRQ.pdf 5.5V, 470mF supercapacitor, 45mohm, -40ºC to +70ºC, https://www.cap-xx.com/wp-content/uploads/datasheets/CAP-XX-DMF470mF-Datasheet.pdf Cliff single 4mm shrouded banana panel socket, through-hole, row spacing 15.24 mm (600 mils), LongPads 12-lead though-hole mounted DIP package, row spacing 8.89 mm (350 mils), SMDSocket, SmallPads 28-lead though-hole mounted DIP package, row spacing 7.62 mm (300 mils), see http://cdn-reichelt.de/documents/datenblatt/A400/HDBL101G_20SERIES-TSC.pdf DIL DIP PDIP 5.08mm 7.62mm 300mil Vishay HVMDIP HEXDIP DirectFET L4 MOSFET Infineon DirectFET MF MOSFET Infineon DirectFET.
- Layout ideas module led_5mm.
- 0.3mm gap, pads 1-2 Bridged2Bar.
- TO-92 KK254 Molex header 2.54 mm spacing.