# Beck v1 PCB ## Description Audio-first ESP32-S3 wearable PCB. 44 × 26 × 1.0 mm. ESP32-S3-MINI-1 + INMP441 + TP4056 + DW01A/FS8205A + ME6211C33. 800mAh 802545 LiPo. Native USB on GPIO19/20. BLE audio wearable. ## Project Details - **Owner:** faisalfm - **Created:** 3/30/2026 - **Last Updated:** 4/6/2026 - **Visibility:** Public - **System Architecture:** flowchart TD A[USB-C Receptacle] -->|VBUS 5V| B[TP4056 Charger] A -->|D-| C[R_USB_DM 22R] A -->|D+| D[R_USB_DP 22R] C --> E[ESP32-S3 GPIO19] D --> F[ESP32-S3 GPIO20] B -->|BAT+| G[DW01A and FS8205A Protection] G -->|Protected VBAT| H[Battery Connector] G -->|Protected VBAT| I[ME6211 VIN and EN] I -->|3.3V| J[ESP32-S3-MINI-1] I -->|3.3V| K[INMP441] J -->|GPIO4 SD| K J -->|GPIO5 WS| K J -->|GPIO6 SCK| K J -->|GPIO0| L[Boot Button] J -->|GPIO48| M[Status LED] I --> N[TP 3V3] G --> O[TP VBAT] P[GND] --> Q[TP GND] J --> R[TP GPIO4] ## Key Components ### D1 — [SML-LX0603GW-TR](https://www.flux.ai/adrian95/sml-lx0603gw-tr.md) - Manufacturer Part Number: SML-LX0603GW-TR - Datasheet URL: https://www.lumex.com/spec/SML-LX0603GW-TR.pdf - Role Details: GPIO48 driven LED status indicator to ground through series resistor - Package: 0603 - Manufacturer Name: Lumex Opto/Components Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED - Role: Status LED **Pins:** - A [pin 2] - K [pin 1] ### J1 — [USB4520-03-0-A](https://www.flux.ai/adrian95/usb4520-03-0-a.md) - Datasheet URL: https://www.mouser.com/datasheet/2/837/GCT_USB4520-3134575.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Part Number: USB4520-03-0-A - Manufacturer Name: GCT - Package: USB-C Receptacle - Role: USB-C Interface - Role Details: USB-C receptacle providing VBUS, GND, CC1, CC2, D+, and D- for charging and native USB **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.md) - Role Details: JST-PH connector for single-cell 3.7V 802545 LiPo battery - License: https://creativecommons.org/licenses/by/4.0/ - Role: Battery Connector - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Package: JST-PH 2-pin - Manufacturer Part Number: S2B-PH-SM4-TB(LF)(SN) - Manufacturer Name: JST Sales America Inc. **Pins:** - P1 [pin 1] - P2 [pin 2] ### SW1 — [HX 3x4x2-2P-1.6N TACTILE SWITCH](https://www.flux.ai/adrian95/hx-3x4x2-2p-1p6n-tactile-switch.md) - Datasheet URL: https://www.lcsc.com/datasheet/C49234124.pdf - Role Details: Momentary switch pulling GPIO0 low for boot mode selection - Manufacturer Part Number: HX 3x4x2-2P-1.6N TACTILE SWITCH - Manufacturer Name: hanxia - License: https://creativecommons.org/licenses/by/4.0/ - LCSC Part Number: C49234124 - Package: SMD - Part Type: Switch - Role: Boot Button **Pins:** - ~ [pin 1B] - ~ [pin 1A] ### TP1 — [5015](https://www.flux.ai/adietz12/5015.md) - Manufacturer Part Number: 5015 - Role Details: 3.3V rail test point - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p55.pdf - Manufacturer Name: Keystone Electronics - Package: SMD - Role: Test Point **Pins:** - TP [pin TP] ### TP2 — [5015](https://www.flux.ai/adietz12/5015.md) - Role Details: Protected VBAT test point after DW01A+FS8205A and before ME6211 - Manufacturer Part Number: 5015 - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p55.pdf - Package: SMD - Manufacturer Name: Keystone Electronics - Role: Test Point **Pins:** - TP [pin TP] ### TP3 — [5015](https://www.flux.ai/adietz12/5015.md) - Manufacturer Part Number: 5015 - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p55.pdf - Role Details: Ground test point - Role: Test Point - Manufacturer Name: Keystone Electronics - Package: SMD **Pins:** - TP [pin TP] ### TP4 — [5015](https://www.flux.ai/adietz12/5015.md) - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p55.pdf - Manufacturer Part Number: 5015 - Package: SMD - Role: Test Point - Manufacturer Name: Keystone Electronics - Role Details: GPIO4 / I2S_SD test point **Pins:** - TP [pin TP] ### U1 — [ESP32-S3-MINI-1-N4R2](https://www.flux.ai/lcsc/esp32-s3-mini-1-n4r2.md) - Package: BULETM-SMD_ESP32-S3-MINI-1-N8 - Manufacturer Part Number: ESP32-S3-MINI-1-N4R2 - LCSC Part Number: C3013941 - JLCPCB Part Class: Extended Part - Package or Case Code: BULETM-SMD_ESP32-S3-MINI-1-N8 - Manufacturer Name: ESPRESSIF(乐鑫) - Part Type: WiFi Modules - Role: Main MCU - Role Details: ESP32-S3-MINI-1-N4R2 module implementing native USB, BLE audio processing, and fixed GPIO assignments for Beck v1 **Pins:** - 3V3 [pin 3] - EN [pin 45] - GND [pin 55] - GND [pin 50] - GND [pin 59] - GND [pin 60] - GND [pin GND] - GND [pin 1] - GND [pin 42] - GND [pin 54] - GND [pin 56] - GND [pin 48] - GND [pin 58] - GND [pin 52] - GND [pin 57] - GND [pin 47] - GND [pin 46] - GND [pin 49] - GND [pin 51] - GND [pin 2] - GND [pin 53] - GND [pin 43] - 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 — [INMP441](https://www.flux.ai/vasyl/inmp441.md) - Datasheet URL: https://invensense.tdk.com/wp-content/uploads/2015/02/INMP441.pdf?ref_disty=digikey - Package: SMD - Part Type: Microphone - Manufacturer Name: TDK InvenSense - Role: Microphone - Role Details: INMP441 digital I2S microphone with L/R tied low for left channel operation - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: INMP441 **Pins:** - GND [pin 1] - L/R [pin 4] - SCK [pin 6] - SD [pin 3] - VDD [pin 2] - WS [pin 5] ### U3 — [TP4056](https://www.flux.ai/vasy_skral/tp4056.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: TP4056 charger receiving USB-C VBUS and charging the LiPo battery at approximately 500mA - Role: Battery Charger - Manufacturer Name: NanJing Top Power ASIC Corp. - Datasheet URL: https://dlnmh9ip6v2uc.cloudfront.net/datasheets/Prototyping/TP4056.pdf - Part Type: Integrated Circuit - Package: SOP-8 - Manufacturer Part Number: TP4056 **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] ### U4 — [DW01A](https://www.flux.ai/kicad-part-library/dw01a.md) - Role: Battery Protection - Package or Case Code: SOT-23-6 - Manufacturer Part Number: DW01A - Role Details: DW01A battery protection controller for overcharge, overdischarge, and overcurrent protection - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: https://hmsemi.com/downfile/DW01A.PDF - Package: SOT-23-6 - LCSC Part Number: C15631 **Pins:** - CS [pin 2] - GND [pin 6] - OC [pin 3] - OD [pin 1] - TD [pin 4] - VCC [pin 5] ### U5 — [FS8205A](https://www.flux.ai/lcsc/fs8205a.md) - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR - Part Type: MOSFETs - LCSC Part Number: C14883 - Manufacturer Part Number: FS8205A - Role: Protection MOSFET - Manufacturer Name: TECH PUBLIC(台舟) - Role Details: FS8205A dual MOSFET controlled by DW01A to gate battery charge and discharge path - JLCPCB Part Class: Extended Part - Package: SOT-23-6 **Pins:** - D1/D2 [pin 5] - D1/D2 [pin 2] - G1 [pin 6] - G2 [pin 4] - S1 [pin 1] - S2 [pin 3] ### U6 — [ME6211C33M5](https://www.flux.ai/kicad-part-library/me6211c33m5.md) - Role: LDO - Package or Case Code: SOT-23-5 - Manufacturer Name: Micron Technology, Inc. - Manufacturer Part Number: ME6211C33M5 - Role Details: ME6211 3.3V regulator powered from protected VBAT with EN tied high from VIN side - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2304140030_MICRONE-Nanjing-Micro-One-Elec-ME6211C33R5G_C235316.pdf - Package: SOT-23-5 **Pins:** - CE [pin 3] - NC [pin 4] - V_{IN} [pin 1] - V_{OUT} [pin 5] - V_{SS} [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/faisalfm/beck-v1-pcb](https://www.flux.ai/faisalfm/beck-v1-pcb).* --- *Generated from [https://www.flux.ai/faisalfm/beck-v1-pcb](https://www.flux.ai/faisalfm/beck-v1-pcb)*