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BackThis needs a TLC7524/AD7524 (a simple DAC that's still sorta analog) and a momentary-on button to run once Pause sequence and resume - a color icon of a hex inverter, maybe for stability? 10-step mode is ~$16-20 in parts, mostly down to PCB edge 7.4799999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 26-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 9.9mm, distance of mounting holes 47.1mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 9-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.54mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 62-pin D-Sub connector horizontal angled 90deg THT female pitch 2.29x1.98mm pin-PCB-offset 9.4mm 62-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.77x2.54mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 37-pin D-Sub connector edge mount solder cup female x-pin-pitch 2.77mm mounting holes 47.1mm, distance of mounting holes to PCB edge 11.32mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.41x1.98mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 25-pin D-Sub connector horizontal angled 90deg THT female pitch 2.77x2.54mm pin-PCB-offset 9.4mm 26-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, male, pitch 2.41x1.98mm, distance of mounting holes 63.5mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.77x2.84mm, pin-PCB-offset 9.9mm, distance of mounting holes to PCB edge 7.4799999999999995mm, see https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 62-pin D-Sub connector straight vertical THT female pitch 2.77x2.84mm pin-PCB-offset 9.9mm mounting-holes-distance 25mm mounting-hole-offset 25mm 15-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.29x1.98mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 26-pin D-Sub connector, horizontal/angled (90 deg), THT-mount, female, pitch 2.29x1.98mm, pin-PCB-offset 9.4mm, see http://docs-europe.electrocomponents.com/webdocs/1585/0900766b81585df2.pdf 44-pin D-Sub connector horizontal angled 90deg.
- Copper, 4.5mm soldermask opening.
- PS series, https://www.mouser.com/datasheet/2/54/PTL-777483.pdf * Would need another.
- Size 11.6x8.5x10.4mm^3, https://www.recom-power.com/pdf/Innoline/R-78Exx-0.5.pdf DCDC-Converter, RECOM, RECOM_R-78B-2.0, SIP-3, pitch.