# Remarkable Salmon Sonic Screwdriver ## Description ESP32-S3 Wearable Audio Streaming Pendant (USB-C + LiPo + I2S Mic + microSD + OLED) ## Project Details - **Owner:** sme12435 - **Created:** 3/15/2026 - **Last Updated:** 3/15/2026 - **Visibility:** Public - **Board Size:** 40mm x 45mm - **Placement Constraints:** USB-C on one edge; OLED header opposite edge; buttons on sides; keep mic away from power/USB; antenna keepout per ESP32-S3-MINI datasheet - **Fab Notes:** JLCPCB min trace/space 0.127mm, min drill 0.3mm. Signal trace >=0.2mm, power trace >=0.4mm. USB D+/D- short, matched length. Antenna keepout no copper on all layers. Ground pours on both layers. - **Signal Trace Width (min):** 0.2mm - **USB:** USB-C USB 2.0 (native ESP32-S3) - **Layer Count:** 2 - **Power Trace Width (min):** 0.4mm - **System Architecture:** flowchart TD USB_C["USB-C Receptacle"] --> VBUS["VBUS 5V"] VBUS --> Charger["LiPo Charger TP4056"] Charger --> Protect["Battery Protection DW01A + FET"] Protect --> VBAT["VBAT 3.0-4.2V"] VBAT --> LDO["3.3V LDO"] LDO --> V3V3["3V3 Rail"] USB_C --> USB_DPDM["USB D+ D-"] USB_DPDM --> ESP["ESP32-S3-MINI-1-N8R2"] V3V3 --> ESP V3V3 --> MIC["INMP441 I2S Mic"] V3V3 --> OLED["I2C OLED Header"] V3V3 --> SD["MicroSD Slot"] V3V3 --> UI["Buttons + Status LED"] MIC --> ESP OLED --> ESP SD --> ESP UI --> ESP - **Key Nets:** USB_DP/USB_DM, VBUS_5V, VBAT, 3V3 - **Battery:** 1S LiPo 3.7V nominal 500mAh (JST-PH-2) - **Min Drill:** 0.3mm - **MCU Module:** ESP32-S3-MINI-1-N8R2 (8MB flash, 2MB PSRAM, onboard antenna) - **Layers:** 2 - **Charging:** TP4056 + DW01A protection, 500mA charge current (PROG=2k) - **Min Trace/Space:** 0.127mm - **Board Corner Radius:** 2mm - **Board Corners:** 2mm radius - **Manufacturer Target:** JLCPCB ## Key Components ### J1 — [USB4520-03-0-A](https://www.flux.ai/adrian95/usb4520-03-0-a~ufd.md) - Datasheet URL: https://www.mouser.com/datasheet/2/837/GCT_USB4520-3134575.pdf - Part Type: Connector - Package: SMD - Role: USB Connector - Manufacturer Name: GCT - Manufacturer Part Number: USB4520-03-0-A - Role Details: USB-C receptacle, USB2.0 D+/D- to ESP32-S3 native USB - 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_B12] - GND_B [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHELL_GND [pin S3] - SHELL_GND [pin S2] - SHELL_GND [pin S1] - SHELL_GND [pin S4] - VBUS_A [pin A4_B9] - VBUS_B [pin B4_A9] ### J2 — [S2B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-sm4-tblfsn~b96.md) - Role: Battery Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: S2B-PH-SM4-TB(LF)(SN) - Role Details: JST PH 2-pin 2.0mm pitch - Package: SMD - Manufacturer Name: JST Sales America Inc. - Part Type: Connector - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### J3 — [61300411121](https://www.flux.ai/adrian95/61300411121~pw9.md) - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: HDRV4W95P0X254_1X4_1016X254X854P - Datasheet URL: https://www.we-online.com/components/products/datasheet/61300411121.pdf - Package: THT 2.54mm - Manufacturer Name: Wurth Elektronik - Role: Display Header - Role Details: Pins: 3V3, GND, SDA=GPIO4, SCL=GPIO5 - Manufacturer Part Number: 61300411121 - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### LED1 — [LED 0603 (1608 Metric)](https://www.flux.ai/jharwinbarrozo/led-0603-1608-metric~yk.md) - Part Type: LED - Role: Status LED - Package: SMD_0603_1608Metric - Role Details: GPIO13 -> 100 ohm -> LED -> GND **Pins:** - A [pin 2] - K [pin 1] ### M1 — [INMP441](https://www.flux.ai/vasyl/inmp441~ltf.md) - Role: Microphone - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: INMP441 - Part Type: Microphone - Role Details: I2S mic; WS=GPIO1, SCK=GPIO2, SD=GPIO3, L/R to GND - Package: LGA - Datasheet URL: https://invensense.tdk.com/wp-content/uploads/2015/02/INMP441.pdf?ref_disty=digikey - Manufacturer Name: TDK InvenSense **Pins:** - GND [pin 1] - L/R [pin 4] - SCK [pin 6] - SD [pin 3] - VDD [pin 2] - WS [pin 5] ### SIM1 — [1040310811](https://www.flux.ai/lcsc/1040310811~3fri.md) - Manufacturer Part Number: 1040310811 - JLCPCB Part Class: Extended Part - Package or Case Code: SIM-SMD_8P-1040310811 - Role Details: SPI: MOSI=GPIO6, MISO=GPIO7, CLK=GPIO8, CS=GPIO9; CS pull-up 10k - Manufacturer Name: MOLEX - Role: MicroSD Connector - Package: SMD - Part Type: SIM Card Connectors - LCSC Part Number: C585350 **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] ### SW1 — [TL3330AF260QG](https://www.flux.ai/vasy_skral/tl3330af260qg~g8.md) - Part Type: Switch - Manufacturer Part Number: TL3330AF260QG - Package: SMD - Datasheet URL: https://sten-eswitch-13110800-production.s3.amazonaws.com/system/asset/product_line/data_sheet/163/TL3330.pdf - Role: User Button - Role Details: Active low button to GND (GPIO10 and GPIO11) - Manufacturer Name: E-Switch **Pins:** - P1 [pin 1] - P2 [pin 2] ### SW2 — [TL3330AF260QG](https://www.flux.ai/vasy_skral/tl3330af260qg~g8.md) - Manufacturer Name: E-Switch - Package: SMD - Role: User Button - Role Details: Active low button to GND (GPIO10 and GPIO11) - Manufacturer Part Number: TL3330AF260QG - Part Type: Switch - Datasheet URL: https://sten-eswitch-13110800-production.s3.amazonaws.com/system/asset/product_line/data_sheet/163/TL3330.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [ESP32-S3-MINI-1-N8](https://www.flux.ai/jecstronic/esp32-s3-mini-1-n8~m3d.md) - Manufacturer Part Number: ESP32-S3-MINI-1-N8 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Espressif Systems - Package: SMD Module - Role Details: ESP32-S3-MINI-1 family module (library lacks exact -N8R2); use as placeholder until exact part available. - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_mini_1_mini_1u_datasheet_en-2997643.pdf - Part Type: Module - Role: MCU Module **Pins:** - 3V3 [pin 3] - EN [pin 45] - GND [pin 2] - GND [pin 60] - GND [pin 49] - GND [pin 61_6] - GND [pin 59] - GND [pin 46] - GND [pin 47] - GND [pin 43] - GND [pin 61_1] - GND [pin 61] - GND [pin 61_3] - GND [pin 42] - GND [pin 57] - GND [pin 64] - GND [pin 1] - GND [pin 52] - GND [pin 61_8] - GND [pin 61_5] - GND [pin 48] - GND [pin 61_2] - GND [pin 51] - GND [pin 58] - GND [pin 56] - GND [pin 61_4] - GND [pin 63] - GND [pin 65] - GND [pin 53] - GND [pin 61_7] - GND [pin 55] - GND [pin 50] - GND [pin 54] - GND [pin 62] - IO0 [pin 4] - IO1 [pin 5] - IO10 [pin 14] - IO11 [pin 15] - IO12 [pin 16] - IO13 [pin 17] - IO14 [pin 18] - IO15 [pin 19] - IO16 [pin 20] - IO17 [pin 21] - IO18 [pin 22] - IO19 [pin 23] - IO2 [pin 6] - IO20 [pin 24] - IO21 [pin 25] - IO26 [pin 26] - IO3 [pin 7] - IO33 [pin 28] - IO34 [pin 29] - IO35 [pin 31] - IO36 [pin 32] - IO37 [pin 33] - IO38 [pin 34] - IO39 [pin 35] - IO4 [pin 8] - IO40 [pin 36] - IO41 [pin 37] - IO42 [pin 38] - IO45 [pin 41] - IO46 [pin 44] - IO47 [pin 27] - IO48 [pin 30] - IO5 [pin 9] - IO6 [pin 10] - IO7 [pin 11] - IO8 [pin 12] - IO9 [pin 13] - RXD0 [pin 40] - TXD0 [pin 39] ### U2 — [TP4056](https://www.flux.ai/vasy_skral/tp4056~xa.md) - Role Details: Linear Li-ion charger; PROG resistor 2k for 500mA target - Manufacturer Part Number: TP4056 - Role: Battery Charger - Manufacturer Name: NanJing Top Power ASIC Corp. - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Package: SOP-8 - Datasheet URL: https://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/TP4056.pdf **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] ### U3 — [DW01A](https://www.flux.ai/kicad-part-library/dw01a~5d.md) - Package or Case Code: SOT-23-6 - Role Details: DW01A protection controller for 1S LiPo - Datasheet URL: https://hmsemi.com/downfile/DW01A.PDF - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: DW01A - Role: Battery Protection - Package: SOT-23-6 **Pins:** - CS [pin 2] - GND [pin 6] - OC [pin 3] - OD [pin 1] - TD [pin 4] - VCC [pin 5] ### U4 — [FS8205A](https://www.flux.ai/adrian95/fs8205a~0f1.md) - Package: SOT-23-6 - Manufacturer Name: TECH PUBLIC - Datasheet URL: https://datasheet.lcsc.com/lcsc/2108132230_TECH-PUBLIC-FS8205A_C2830320.pdf - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Dual MOSFET paired with DW01A - Role: Battery Protection FET - Manufacturer Part Number: FS8205A **Pins:** - GND [pin 3] - IN1 [pin 2] - IN2 [pin 5] - SINK [pin 4] - SOURCE [pin 6] - VCC [pin 1] ### U5 — [XC6220B331MR](https://www.flux.ai/kicad-part-library/xc6220b331mr~l55.md) - Package: SOT-23-5 - Role: Regulator 3.3V - Datasheet URL: https://www.torexsemi.com/file/xc6220/XC6220.pdf - Role Details: VBAT -> 3V3 LDO; use 10uF in/out + 100nF local decoupling - Package or Case Code: SOT-23-5 - Manufacturer Part Number: XC6220B331MR **Pins:** - CE [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/sme12435/remarkable-salmon-sonic-screwdriver~68](https://www.flux.ai/sme12435/remarkable-salmon-sonic-screwdriver~68).* --- *Generated from [https://www.flux.ai/sme12435/remarkable-salmon-sonic-screwdriver~68](https://www.flux.ai/sme12435/remarkable-salmon-sonic-screwdriver~68)*