# WiFi Voice AI Hub ## Description USB-C powered ESP32-S3 Wi-Fi voice assistant hub with MEMS microphone, I2S class-D speaker output, protected USB, and manufacturing-focused PCB. ## Project Details - **Owner:** asdfghjikolp - **Created:** 6/20/2026 - **Last Updated:** 6/21/2026 - **Visibility:** Public - **Connectivity:** Wi-Fi - **Human Interface:** Audio - **Domain:** IoT - **Implementation Details:** ESP32-S3 USB-C voice AI hub prototype - **Power Requirements:** 5V ## Key Components ### D1 — [USBLC6-2SC6](https://www.flux.ai/vasy_skral/usblc6-2sc6~g1b.md) - Role: USB ESD protection - LCSC Part Number: C7519 - Part Type: Protection - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/06/1d/48/9c/6c/20/4a/b2/CD00050750.pdf/files/CD00050750.pdf/jcr:content/translations/en.CD00050750.pdf - Manufacturer Name: STMicroelectronics - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Part Number: USBLC6-2SC6 **Pins:** - GND [pin 2] - I/O1 [pin 6] - I/O1 [pin 1] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### F1 — [NANOSMDC200F-2](https://www.flux.ai/adrian95/nanosmdc200f-2.md) - Role: Input PTC fuse - Manufacturer Part Number: NANOSMDC200F-2 - Manufacturer Name: Littelfuse - Mount: Surface Mount - Part Type: Circuit Protection Devices - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-ptc-nanosmdc-datasheet?assetguid=2f577573-06ff-4a40-bed7-97598401ae57 **Pins:** - ~ [pin 1] - ~ [pin 2] ### J1 — [USB4520-03-0-A](https://www.flux.ai/adrian95/usb4520-03-0-a~ufd.md) - Datasheet URL: https://gct.co/files/specs/usb4520-spec.pdf - Role: USB-C receptacle - Manufacturer Part Number: USB4520-03-0-A - Symbol Style: parametric-v1 - Part Type: Connector - Manufacturer Name: GCT - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND_A [pin A1] - GND_A [pin B12] - GND_B [pin B1] - GND_B [pin A12] - MH1 [pin S1] - MH2 [pin S4] - MH3 [pin S3] - MH4 [pin S2] - SBU1 [pin A8] - SBU2 [pin B8] - VBUS_A [pin A4] - VBUS_A [pin B9] - VBUS_B [pin B4] - VBUS_B [pin A9] ### J2 — [691137710002](https://www.flux.ai/adrian95/691137710002~c39.md) - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 691137710002 - Part Type: Connector - Role: Speaker connector - Manufacturer Name: Würth Elektronik **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW1 — [PTS645SL43SMTR92 LFS](https://www.flux.ai/adrian95/pts645sl43smtr92-lfs~0ce.md) - Part Type: Switch - Role: Reset button - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-c-k-tactile-pts645-series-datasheet?assetguid=d58fc8a8-f6e1-4527-ab68-27635e632e39 - Manufacturer Name: C&K - Manufacturer Part Number: SW1_1-2_3-4 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### SW2 — [PTS645SL43SMTR92 LFS](https://www.flux.ai/adrian95/pts645sl43smtr92-lfs~0ce.md) - Manufacturer Name: C&K - Manufacturer Part Number: SW1_1-2_3-4 - Role: Boot button - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-c-k-tactile-pts645-series-datasheet?assetguid=d58fc8a8-f6e1-4527-ab68-27635e632e39 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Switch **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/alantyger/esp32-s3-wroom-1-n16r8~ok.md) - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Part Type: Microcontroller - Role: Compute/WiFi module - Purchase Url: https://octopart.com/esp32-s3-wroom-1-n16r8-espressif+systems-124180817?r=spc#CadModels - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdfhttps://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf - Manufacturer Name: Espressif Systems **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND_1 [pin 1] - GND_10 [pin 48] - GND_11 [pin 49] - GND_2 [pin 40] - GND_3 [pin 41] - GND_4 [pin 42] - GND_5 [pin 43] - GND_6 [pin 44] - GND_7 [pin 45] - GND_8 [pin 46] - GND_9 [pin 47] - IO0 [pin 27] - IO1 [pin 39] - IO10 [pin 18] - IO11 [pin 19] - IO12 [pin 20] - IO13 [pin 21] - IO14 [pin 22] - IO15 [pin 8] - IO16 [pin 9] - IO17 [pin 10] - IO18 [pin 11] - IO19 [pin 13] - IO2 [pin 38] - IO20 [pin 14] - IO21 [pin 23] - IO3 [pin 15] - IO35 [pin 28] - IO36 [pin 29] - IO37 [pin 30] - IO38 [pin 31] - IO39 [pin 32] - IO4 [pin 4] - IO40 [pin 33] - IO41 [pin 34] - IO42 [pin 35] - IO45 [pin 26] - IO46 [pin 16] - IO47 [pin 24] - IO48 [pin 25] - IO5 [pin 5] - IO6 [pin 6] - IO7 [pin 7] - IO8 [pin 12] - IO9 [pin 17] - RXD0 [pin 36] - TXD0 [pin 37] ### U2 — [AMS1117-3.3RG](https://www.flux.ai/lcsc/ams1117-3p3rg~47um.md) - Role Details: 1 A LDO; thermal acceptable for prototype but buck recommended if sustained high 3.3V load - Part Type: Linear Voltage Regulators (LDO) - JLCPCB Part Class: Extended Part - LCSC Part Number: C2977152 - Role: 3.3V regulator - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.lcsc.com/datasheet/C2977152.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=T1kIXgFeT1NaU1RXQFBbUlUHT1cKU1NXFVBeX1VSTlAxVlNeR1RZUlNWQ1hYUTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Package or Case Code: SOT-223-3_L6.4-W3.5-P2.30-LS7.0-BR - Symbol Style: parametric-v1 - Manufacturer Part Number: AMS1117-3.3RG - Manufacturer Name: HGC(深圳汉芯) **Pins:** - ADJ/GND [pin 1] - IN [pin 3] - OUT [pin 2] - OUT [pin 4] ### U3 — [MAX98357AETE+T](https://www.flux.ai/markwuflux/max98357aeteplust~ht.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/2201242100_Analog-Devices-Inc--Maxim-Integrated-MAX98357AETE-T_C910544.pdf - Manufacturer Part Number: MAX98357AETE+T - DPN: C910544 - Role: I2S amplifier - Manufacturer Name: Maxim Integrated Products, Inc. **Pins:** - ~SD_MODE [pin 4] - BCLK [pin 16] - DIN [pin 1] - GAIN_SLOT [pin 2] - GND_1 [pin 3] - GND_2 [pin 11] - GND_3 [pin 15] - LRCLK [pin 14] - N.C._1 [pin 5] - N.C._2 [pin 6] - N.C._3 [pin 12] - N.C._4 [pin 13] - OUTN [pin 10] - OUTP [pin 9] - THERMAL_PAD [pin 17] - VDD_1 [pin 7] - VDD_2 [pin 8] ### U4 — [IM69D130V01XTSA1](https://www.flux.ai/jecstronic/im69d130v01xtsa1~fp6.md) - Part Type: Microphone - Role: PDM microphone - Manufacturer Name: Infineon Technologies - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: IM69D130V01XTSA1 - Datasheet URL: https://www.infineon.com/dgdl/Infineon-IM69D130-DS-v01_00-EN.pdf?fileId=5546d462602a9dc801607a0e46511a2e **Pins:** - CLOCK [pin 3] - DATA [pin 1] - GND [pin 5_1] - GND__1 [pin 5_2] - SELECT [pin 4] - VDD [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/asdfghjikolp/wifi-voice-ai-hub~2c](https://www.flux.ai/asdfghjikolp/wifi-voice-ai-hub~2c).* --- *Generated from [https://www.flux.ai/asdfghjikolp/wifi-voice-ai-hub~2c](https://www.flux.ai/asdfghjikolp/wifi-voice-ai-hub~2c)*