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second-string
Protoype hardware and firmware for evaluating different designs of capacitive touch buttons and reverse-mount LEDs
| Reference | Value | Description |
|---|---|---|
| Q1 | PMOS | |
| Q2-Q19 | NMOS | |
| U1 | AZ1117CH2-3.3 | |
| U2 | ESP32-S3-WROOM-1 | |
| U3 | SP3485CN | |
| U4,U5,U7 | 74HC595 | |
| U10,U11 |
| C1,C3,C6,C10 | 10uF |
|---|
| C2,C5,C9 | 1uF |
|---|
| C4 | 22uF |
|---|
| C7,C8,C11-C13,C17,C18 | 0.1uF |
|---|
| D1 | D |
|---|
| D2-D21 | LED |
|---|
| H1-H4 | MountingHole |
|---|
| J1 | Screw_Terminal_01x02 |
|---|
| J2 | USB_C_Receptacle_USB2.0_EDITED |
|---|
| J3 | FTSH-105-01-S-DV-TR |
|---|
| J4 | Conn_01x04 |
|---|
| J5 | XLR5_Ground |
|---|
| R3-R6,R16-R21 | 0R |
|---|
| R7,R8 | 5k1 |
|---|
| R12 | 100k |
|---|
| R13,R15 | 3.3k-8k |
|---|
| R14,R22,R23,R96-R107,R109-R114 | 10k |
|---|
| R25,R27,R29,R31,R33,R35,R37,R39,R41,R43,R45,R47,R49,R51,R53,R55,R57,R59 | 470R 1/2W |
|---|
| R108,R121 | 47k |
|---|
| R135 | 120R |
|---|
| TP1,TP2 | TestPoint |
|---|
| TP3 | 3V3 |
|---|
| TP4 | IO14 |
|---|
| TP5 | LATCH |
|---|
| TP6 | CLOCK |
|---|
| TP7 | DATA |
|---|
| TP8 | SCL |
|---|
| TP9 | SCK |
|---|