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niranjannt
Embedded music-streaming system using ESP32 and TM4C MCUs, featuring USB-UART audio streaming, SPI DAC output, MOSFET-based analog filters, digital audio effects, real-time control via potentiometers, and a web-based interface.
| Reference | Value | Description |
|---|---|---|
| Q1-Q18 | MMBF170 | 0.5A Id, 60V Vds, N-Channel MOSFET, SOT-23 |
| U1 | LM2937ET-3.3_NOPB | 400mA and 500mA Voltage Regulator |
| U2 | LM4041CILPR | |
| U3 | ESP32-D0WD-V3 | |
| U4 | FT232R | |
| U5-U8,U10-U13 | OPA2350 | Precision, 38-MHz, Low-Noise, Low-Power, RRIO, CMOS Operational Amplifier, DIP-8 |
| U9,U14 |
| 12-Bit, 2.5 us DAC, Serial Input, Pgrmable Settling Time, Q temp available |
| U15 | Adafruit ST7735R |
|---|
| C1,C3,C10-C13,C15,C22-C25,C27-C34 | 0.1u | Unpolarized capacitor |
|---|
| C2,C14,C26 | 10u | Unpolarized capacitor |
|---|
| C4,C6,C16,C18 | 1.2n | Unpolarized capacitor |
|---|
| C5,C7,C17,C19 | 30n | Unpolarized capacitor |
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| C8,C20 | 9.5n | Unpolarized capacitor |
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| C9,C21 | 3.7n | Unpolarized capacitor |
|---|
| C35,C36 | 0.1uF | Unpolarized capacitor |
|---|
| D1 | PD6 | Light emitting diode |
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| D2 | PD7 | Light emitting diode |
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| D3,D4 | 1N914 | Diode |
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| D5 | POWER | Light emitting diode |
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| J1 | 2479774-1 | USB Type-C Charge-only, 6 Pin, Top, 1u GF |
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| J2 | EK-TM4C123GXL |
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| J3 | AudioJack | Speaker |
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| R1,R2 | 5K1 | Resistor |
|---|
| R3 | 1k | Resistor |
|---|
| R4 | 47k | Resistor |
|---|
| R5,R9,R10,R12,R20,R21,R31,R33,R35,R36,R42,R43,R46,R53,R54,R62,R64,R65,R67,R83,R86,R87,R90-R94 | 10k | Resistor |
|---|
| R6-R8,R27,R29 | 0 | Resistor |
|---|
| R11,R13,R22-R24,R32,R44,R45,R55-R57,R63,R103-R105,R109-R111 | 2k | Resistor |
|---|
| R14,R25,R47,R58 | 184k | Resistor |
|---|
| R15,R26,R48,R59 | 68.8k | Resistor |
|---|
| R16,R17,R28,R37,R49,R50,R60,R68 | 40k | Resistor |
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| R18,R19,R30,R51,R52,R61 | 30k | Resistor |
|---|
| R34,R66 | 7.5k | Resistor |
|---|
| R38,R69 | 3.3k | Resistor |
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| R39,R40,R70,R71 | 200k | Resistor |
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| R41,R72 | 50k | Resistor |
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| R73,R75,R77,R79,R81,R84,R88 | 100k | Resistor |
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| R74,R76,R78,R80,R82,R85,R89,R101,R107 | 100 | Resistor |
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| R95,R98,R99 | 1.5k | Resistor |
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| R96,R97 | 50 | Resistor |
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| R100,R106 | 125 | Resistor |
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| R102,R108 | 75 | Resistor |
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| SW1 | SW_SPST | Single Pole Single Throw (SPST) switch |
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| SW2 | Pause | Push button switch, generic, two pins |
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| SW3 | LCDMode | Push button switch, generic, two pins |
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| SW4 | Flanger | Push button switch, generic, two pins |
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| SW5 | Distortion | Push button switch, generic, two pins |
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| SW6 | Reverb | Push button switch, generic, two pins |
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| SW7 | Delay | Push button switch, generic, two pins |
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| SW8 | Tempo | Push button switch, generic, two pins |
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| TP1,TP2 | +3V3 | Testpoint |
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| TP3,TP4 | GND | Testpoint |
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| TP5 | +VRail | Testpoint |
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| TP6 | +VRef | Testpoint |
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| TP7 | R_Treble | Testpoint |
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| TP8 | R_Mid | Testpoint |
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| TP9 | R_Bass | Testpoint |
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| TP10 | L_Treble | Testpoint |
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| TP11 | L_Mid | Testpoint |
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| TP12 | L_Bass | Testpoint |
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| TP13 | R_Out | Testpoint |
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| TP14 | L_Out | Testpoint |
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