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(55 "User.6" user (56 "User.7" user (57 "User.8" user (58 "User.9" user Component Count: 74 Refs C6, C7, C8, C9 | 1 | TL071 | Operational amplifier, DIP-8 | | | | | Tayda | A-3545, A-3489, or A-3499\*\*\* | | | | | U3 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 | | J3, J4, J5 | 3 | 1 | 2_pin_Molex_connector | 2 | 47k | Resistor | | | | S3 | 1 | 1 | 10nF | Unpolarized capacitor | | | J10 | 1 | SW_3PDT_x3 | Switch, single pole triple throw, 3 position switch, SP3T K switch SPST right angle, stacked (https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/484/48406/484060001_sd.pdf USB 3.0 Micro B horizontal USB Micro-B receptacle, horizontal, SMD, 10118193, with flange, bottom-mount, SMD, right-angle (http://www.molex.com/pdm_docs/sd/473460001_sd.pdf Micro B horizontal dustproof waterproof IP67 XKB Connectivity, USB Micro-B, right-angle, SMT, https://datasheet.lcsc.com/lcsc/2206091745_XKB-Connectivity-U254-051T-4BH83-F1S_C397452.pdf USB.

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