# ESP32-S3 AI Voice Assistant Dev Board ## Description Portable ESP32-S3 AI voice assistant development board with USB-C programming, LiPo charging, OLED, I2S microphone/amplifier, SPI flash, and microSD expansion. ## Project Details - **Owner:** dwi-ferdianto - **Created:** 7/6/2026 - **Last Updated:** 7/6/2026 - **Visibility:** Public - **Copies:** 1 ## Key Components ### J1 — [USB4235-03-C](https://www.flux.ai/cherepanyadima/usb4235-03-c~sn.md) - Manufacturer Part Number: USB4235-03-C_REVA - Part Type: Connectors - Manufacturer Name: GST - Datasheet URL: https://gct.co/files/specs/usb4235-spec.pdf **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__1 [pin A12] - GND_B [pin B1] - GND_B__1 [pin B12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin SH1] - SHIELD__1 [pin SH2] - VBUS_A [pin A4] - VBUS_A__1 [pin A9] - VBUS_B [pin B4] - VBUS_B__1 [pin B9] ### J2 — [1040310811](https://www.flux.ai/lcsc/1040310811~3fri.md) - Datasheet URL: https://www.lcsc.com/datasheet/C585350.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlVZVVIFFgBeVAVTT1BXUgFfEwJeVlBfEwVcAlMHRAQxVlNeR1deVlRSQFdaXzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Part Type: SIM Card Connectors - Symbol Style: parametric-v1 - Manufacturer Name: MOLEX - Manufacturer Part Number: 1040310811 - Package or Case Code: SIM-SMD_8P-1040310811 - LCSC Part Number: C585350 - JLCPCB Part Class: Extended Part **Pins:** - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 13 [pin 13] - 14 [pin 14] - 9 [pin 9] - CD/DAT3 [pin 2] - CLK [pin 5] - CMD [pin 3] - DAT0 [pin 7] - DAT1 [pin 8] - DAT2 [pin 1] - VDD [pin 4] - VSS [pin 6] ### J3 — [B2B-PH-K-S](https://www.flux.ai/adrian95/b2b-ph-k-s~fx.md) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Package or Case Code: JST_B2B-PH-K-S - Manufacturer Name: JST - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Part Number: B2B-PH-K-S **Pins:** - 1 [pin 1] - 2 [pin 2] ### J4 — [1729128](https://www.flux.ai/adrian95/1729128~gmm.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: http://www.phoenixcontact.net/product/1729128 - Part Type: Connector - Manufacturer Name: Phoenix Contact - Package or Case Code: 1729128 - Manufacturer Part Number: 1729128 **Pins:** - 1 [pin 1] - 2 [pin 2] ### LED1 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: 0603 - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [Generic LED SMD](https://www.flux.ai/jharwinbarrozo/generic-led-smd~ku.md) - Package: 0603 - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### MIC1 — [INMP441](https://www.flux.ai/vasyl/inmp441~ltf.md) - Manufacturer Part Number: INMP441 - Datasheet URL: https://invensense.tdk.com/wp-content/uploads/2015/02/INMP441.pdf?ref_disty=digikey - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Microphone - Manufacturer Name: TDK InvenSense **Pins:** - GND [pin 1] - L/R [pin 4] - SCK [pin 6] - SD [pin 3] - VDD [pin 2] - WS [pin 5] ### SW1 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Manufacturer Part Number: TS-1088-AR02016 - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - LCSC Part Number: C720477 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Manufacturer Name: XUNPU(讯普) - Part Type: Tactile Switches **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Manufacturer Name: XUNPU(讯普) - Part Type: Tactile Switches - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - LCSC Part Number: C720477 - Manufacturer Part Number: TS-1088-AR02016 **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n16r8~fs1.md) - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_wroom_1_wroom_1u_datasheet_en-2930317.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Symbol Style: parametric-v1 - Manufacturer Name: Espressif Systems - Part Type: Module **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 — [W25Q128JVSIM](https://www.flux.ai/adrian95/w25q128jvsim~bgh.md) - Manufacturer Part Number: W25Q128JVSIM - Datasheet URL: https://www.winbond.com/resource-files/W25Q128JV%20RevI%2008232021%20Plus.pdf - Part Type: Integrated Circuit - Manufacturer Name: Winbond Electronics - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~CS [pin 1] - ~HOLD_OR_~/RESET_(IO3) [pin 7] - ~WP_(IO2) [pin 3] - CLK [pin 6] - DI_(IO0) [pin 5] - DO_(IO1) [pin 2] - GND [pin 4] - VCC [pin 8] ### U3 — [MAX98357AETE+T](https://www.flux.ai/adrian95/max98357aeteplust~wk.md) - Symbol Style: parametric-v1 - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Part Type: Integrated Circuit - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max98357a-max98357b.pdf - Manufacturer Part Number: MAX98357AETE+T - License: https://creativecommons.org/licenses/by/4.0/ **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 — [TP4056](https://www.flux.ai/vasy_skral/tp4056~xa.md) - Manufacturer Part Number: TP4056 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/TP4056.pdf - Part Type: Integrated Circuit - Manufacturer Name: NanJing Top Power ASIC Corp. **Pins:** - ~CHRG [pin 7] - ~STDBY [pin 6] - BAT [pin 5] - CE [pin 8] - EP [pin 9] - GND [pin 3] - PROG [pin 2] - TEMP [pin 1] - VCC [pin 4] ### U5 — [AP2112K-3.3TRG1](https://www.flux.ai/adrian95/ap2112k-33trg1~zlq.md) - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2112.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Diodes Incorporated - Symbol Style: parametric-v1 - Manufacturer Part Number: AP2112K-3.3TRG1 - Part Type: Integrated Circuit **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/dwi-ferdianto/esp32-s3-ai-voice-assistant-dev-board~vr](https://www.flux.ai/dwi-ferdianto/esp32-s3-ai-voice-assistant-dev-board~vr).* --- *Generated from [https://www.flux.ai/dwi-ferdianto/esp32-s3-ai-voice-assistant-dev-board~vr](https://www.flux.ai/dwi-ferdianto/esp32-s3-ai-voice-assistant-dev-board~vr)*