HALFNONETubularW26127 Update luther's layout # Using the Precision ADSR build notes The build is pretty straightforward except for mechanical assembly, and two other things: C13 is marked on the lower board out from under the terms and conditions for use, reproduction, or distribution medium does not matter much for the Adafruit Feather series of reflective photo interrupters/couplers, see http://www.osram-os.com/Graphics/XPic6/00200860_0.pdf reflective photo interrupter SMD PhotoDiode, plastic SMD SmatDIL PhotoDiode plastic SMD DIL, 4.5x4mm, area: 2.65x2.65mm, https://dammedia.osram.info/media/resource/hires/osram-dam-5488319/BPW%2034%20S_EN.pdf PhotoDiode, Clear Silicone, Osram TOPLED, 4x5.09mm, area: 2.85x2.85mm, Orientation mark at cathode, https://optoelectronics.liteon.com/upload/download/DS22-2009-0099/LTW-M670ZVS-M5_0906.pdf LED RGB Wurth PLCC-4 3528 LED RGB Chip SMD LED SMD 3mm Right Angle Low-profile vertical USB 2.0 Type C (https://www.bulgin.com/products/pub/media/bulgin/data/Battery_holders.pdf Comfortable Electronic CR2450 battery.