intercom
tylerreckart
A low-latency voice routing hardware interface for Arbiter.
Components (27)
| Reference | Value | Description |
|---|---|---|
| U1 | MAX98357A | Mono DAC with amplifier, I2S, PCM, TDM, 32-bit, 96khz, 3.2W, TQFP-16 |
| U2 | TPS61088 | |
| A1 | Arduino_Nano_ESP32 | Arduino Nano board based on the ESP32-S3 with a dual-core 240 MHz processor, 384 kB ROM, 512 kB SRAM. Operates at 3.3V, with 5V USB-C® input and 6-21V VIN. Features Wi-Fi®, Bluetooth® LE, digital and analog pins, and supports SPI, I2C, UART, I2S, and CAN. |
| BT2 | 1S LiPo | |
| C2,C23 | 1uF | capacitor, US symbol |
| C3,C5,C6 | 220pF | capacitor, US symbol |
| C7,C22,C31 | 0.1uF | capacitor, US symbol |
| C8,C30 | 10uF | capacitor, US symbol |
| C24 | 47nF | |
| C25 | 4.7nF | |
| C26 | 47pF | |
| C27-C29 | 22uF | |
| D1 | LED red | Light emitting diode |
| FB1,FB2 | 600Ω@100MHz | Ferrite bead |
| J1 | Conn_01x02 | Generic connector, single row, 01x02 |
| L2 | 1.2uH | |
| MK1 | ICS-43434 | TDK InvenSense MEMS Microphone, 24-bit I2S, 65 dBA SNR, LGA-6 |
| R1 | 1k | Resistor, US symbol |
| R2,R24 | 10k | Resistor, US symbol |
| R3 | 68 | Resistor, US symbol |
| R4 | 1M | Resistor, US symbol |
| R20,R21 | 200k | |
| R22 | 180k | |
| R23 | 56k | |
| RV1 | A50K | Potentiometer, US symbol |
| SW1 | SW_Push_45deg | Push button switch, normally open, two pins, 45° tilted |
| SW2 | POWER |