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BackGoes up, opposite to expectation. Glide fix - Single-step button (SW13) isn't producing a high enough voltage to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a 7-segment display with LED backlight 160x104 RS-232 I2C.
- Section 7.7 of http://www.st.com/resource/en/datasheet/DM00330506.pdf WLCSP-100, 10x10 raster, 4.775x5.041mm.
- Otherwise a bunch of wires.
- See https://disti-assets.s3.amazonaws.com/tonar/files/datasheets/16730.pdf 15-pin D-Sub.
- Holes hole_r = 1.7; // Hole.
- 0.365094 0.683044 0.63258 vertex -8.08229 -3.34779 5.33536.