intercom
tylerreckart
A low-latency voice routing hardware interface for Arbiter.
Components (38)
| Reference | Value | Description |
|---|---|---|
| U1 | MAX98357AETE+T | Mono DAC with amplifier, I2S, PCM, TDM, 32-bit, 96khz, 3.2W, TQFP-16 |
| U2 | TPS61088RHLR | |
| U3 | ESP32-S3-WROOM-1-N8R8 | |
| U4 | AP2112K-3.3TRG1 | |
| U5 | MCP73831T-2ACI/OT | |
| U6 | USBLC6-2SC6 | |
| BT2 | 1S LiPo | |
| C2,C23,C42-C44 | 1uF | capacitor, US symbol |
| C3,C5,C6 | 220pF | capacitor, US symbol |
| C7,C22,C31 | 0.1uF | capacitor, US symbol |
| C8,C30,C40,C47,C49 | 10uF | capacitor, US symbol |
| C24 | 47nF | |
| C25 | 4.7nF | |
| C26 | 47pF | |
| C27-C29 | 22uF | |
| C41,C48 | 100nF | |
| C45,C46 | 4.7uF | |
| D1 | LED red | Light emitting diode |
| D2 | SS34 | |
| D3 | LED green | |
| FB1,FB2 | 600Ω@100MHz | Ferrite bead |
| J1 | Conn_01x02 | Generic connector, single row, 01x02 |
| J2 | USB_C_Receptacle_USB2.0_16P | |
| J3 | UART TEST PADS | Three solder-mask-open pads for occasional UART probing |
| J4 | PTT BREAKOUT | PTT breakout, JST PH 2.00 mm 2-pin SMD side-entry |
| J5 | VOLUME BREAKOUT | Volume potentiometer breakout, JST PH 2.00 mm 3-pin SMD side-entry |
| L2 | XAL5030-122MEC | |
| MK1 | ICS-43434 | TDK InvenSense MEMS Microphone, 24-bit I2S, 65 dBA SNR, LGA-6 |
| R1,R45 | 1k | Resistor, US symbol |
| R2,R24,R42,R43 | 10k | Resistor, US symbol |
| R3 | 68 | Resistor, US symbol |
| R20,R21 | 200k | |
| R22 | 180k | |
| R23 | 56k | |
| R40,R41 | 5.1k | |
| R44 | 2k | |
| SW2 | JS102011SAQN | C&K OS102011MA1Q right-angle SPDT slide (side-facing). Order OS102011MA1QN1. |
| SW3,SW4 | KMR231GLFS |