# Stereo Microphone ESP32 Template ## Description This project is a dual channel SPH0645LM4H-B microphone controlled by ESP32 Template #audioDevices #audio #esp32 #recorder #SPH0645LM4H-B #referenceDesign ## Project Details - **Owner:** vasy_skral - **Created:** 11/12/2024 - **Last Updated:** 3/9/2026 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 5 ## Key Components ### J1 — [Connector 01x08 0.100](https://www.flux.ai/vasy_skral/connector-01x08-0100~q3l.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] ### MK1 — [SPH0645LM4H-B](https://www.flux.ai/vasy_skral/sph0645lm4h-b~ymg.md) - Symbol Style: Parametric - Manufacturer Part Number: SPH0645LM4H-B - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0645LM4H-B.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Sensor - Manufacturer Name: Knowles **Pins:** - BCLK [pin 4] - DATA_OUT [pin 6] - GND [pin 3] - SELECT [pin 2] - VDD [pin 5] - WS [pin 1] ### MK2 — [SPH0645LM4H-B](https://www.flux.ai/vasy_skral/sph0645lm4h-b~ymg.md) - Manufacturer Name: Knowles - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Sensor - Manufacturer Part Number: SPH0645LM4H-B - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0645LM4H-B.pdf - Symbol Style: Parametric **Pins:** - BCLK [pin 4] - DATA_OUT [pin 6] - GND [pin 3] - SELECT [pin 2] - VDD [pin 5] - WS [pin 1] ### U1 — [ESP32-WROOM-32 with Simplified Footprint](https://www.flux.ai/vasy_skral/esp32-wroom-32-with-simplified-footprint~8rp.md) - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-WROOM-32 - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf - Part Type: Integrated Circuit **Pins:** - EN [pin 3] - GND [pin 1] - GND [pin 39] - GND [pin 38] - GND [pin 15] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 32] - RXD0/IO3 [pin 34] - SCK/CLK [pin 20] - SCS/CMD [pin 19] - SDI/SD1 [pin 22] - SDO/SD0 [pin 21] - SENSOR_VN [pin 5] - SENSOR_VP [pin 4] - SHD/SD2 [pin 17] - SWP/SD3 [pin 18] - TXD0/IO1 [pin 35] - VDD [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasy_skral/stereo-microphone-esp32-template~kee](https://www.flux.ai/vasy_skral/stereo-microphone-esp32-template~kee).* --- *Generated from [https://www.flux.ai/vasy_skral/stereo-microphone-esp32-template~kee](https://www.flux.ai/vasy_skral/stereo-microphone-esp32-template~kee)*