# Misty Pink Replicator ## Description Misty Pink Replicator schematic finalized for layout handoff with ESP32-S3, USB-C battery charging, T5838 always-on wake microphone, CI1302 backup ASR analog microphone front end, HTEW0154T8 SPI e-ink display, standardized power/test nets, and final ERC-clean baseline. ## Project Details - **Owner:** sunnykjy - **Created:** 3/18/2026 - **Last Updated:** 3/18/2026 - **Visibility:** Public - **System Architecture:** ```mermaid flowchart TD USB["USB-C 5V Input"] --> ESD["ESD and VBUS Protection"] ESD --> CHG["BQ24075 Charger and Power Path"] CHG --> SYS["System Rail"] CHG --> BAT["LiPo Battery"] SYS --> LDO33["3.3V LDO"] SYS --> BST5["5V Boost Reserve"] SYS --> LDO18["1.8V LDO"] LDO33 --> ESP["ESP32-S3 MCU"] LDO33 --> EINK["SPI E-Ink Display"] LDO33 --> UI["LED Buzzer Touch and Test"] LDO18 --> TRES["T5838 Reserved Interface"] BST5 --> CIRES["CI1302 Reserved Interface"] ESP --> EINK ESP --> UI ESP --> TRES ESP --> CIRES CIRES --> AMIC["Analog Mic Reserve"] ``` - **Human Interface:** Touch wake button, RGB LED, buzzer, e-ink display - **Connectivity:** WiFi, BLE, USB, SPI display, voice wake, backup speech recognition - **Power Requirements:** Single-cell Li-ion battery with USB-C charging, 3.3V main rail, dedicated 1.8V T5838 rail, and on-demand 5V boost rail for CI1302 - **Forks:** 1 ## Key Components ### BZ1 — [CMI-9653S-SMT-TR](https://www.flux.ai/adrian95/cmi-9653s-smt-tr.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Same Sky - Role Details: Active buzzer for user feedback, default off in standby - Part Type: Buzzer - Package: SMD - Role: Buzzer - Package or Case Code: CMI9653SSMTTR - Manufacturer Part Number: CMI-9653S-SMT-TR - Datasheet URL: https://componentsearchengine.com/Datasheets/1/CMI-9653S-SMT-TR.pdf **Pins:** - - [pin 1] - + [pin 2] ### D2 — [150080M153000](https://www.flux.ai/adrian95/150080m153000.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Würth Elektronik - Role Details: Status LED held off during standby and driven by ESP32 when active - Datasheet URL: https://www.we-online.com/components/products/datasheet/150080M153000.pdf - Role: RGB LED - Manufacturer Part Number: 150080M153000 - Package: 4-SMD - Part Type: LED **Pins:** - + [pin 4] - B [pin 3] - G [pin 2] - R [pin 1] ### IC2 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n16r8.md) - Net Type: High Speed on USB_DP/USB_DM; Power on 3V3; Low Speed Control on BOOT0/ESP_EN/T5838_*; Analog-adjacent on CI1302 UART/debug interface - Package: Module - Role: Main Controller - Part Type: Module - Role Details: ESP32-S3 main MCU with native USB, SPI display, battery sensing, wake control and backup CI1302 interface - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_wroom_1_wroom_1u_datasheet_en-2930317.pdf - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Manufacturer Name: Espressif Systems - License: https://creativecommons.org/licenses/by/4.0/ **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] ### J3 — [USB-C 2.0 Receptacle](https://www.flux.ai/corynrobinson/usb-c-20-receptacle.md) - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 - Package: USB-C Receptacle - Part Type: USB C - Role Details: USB-C sink connector providing VBUS, CC detection and native USB D+/D- to ESP32 - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf - Net Type: High Speed on USB_DP/USB_DM; Power on USB_5V; Configuration on USB_CC1/USB_CC2 - Manufacturer Name: GTC - Manufacturer Part Number: USB4105-GF-A - Role: USB Connector **Pins:** - CC1 [pin 6] - CC2 [pin 12] - D- [pin 9] - D- [pin 7] - D+ [pin 10] - D+ [pin 8] - GND [pin 15] - GND [pin 1] - GND [pin 16] - GND [pin 2] - SBU1 [pin 11] - SBU2 [pin 5] - VBUS [pin 14] - VBUS [pin 13] - VBUS [pin 4] - VBUS [pin 3] ### J4 — [S2B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-sm4-tblfsn.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Battery Connector - Manufacturer Name: JST Sales America Inc. - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Part Number: S2B-PH-SM4-TB(LF)(SN) - Role Details: 2-pin Li-ion battery connector for 3.7V 1000mAh battery - Package: JST-PH-2 SMD - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### MK2 — [SPU0410LR5H](https://www.flux.ai/jecstronic/spu0410lr5h-qb.md) - Package: SMD - Role: Analog Microphone - Part Type: Microphone - Role Details: Analog MEMS microphone routed with shortest possible path to CI1302 analog input - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/384/SPU0410LR5H-QB_RevH_3-27-13.pdf - Manufacturer Part Number: SPU0410LR5H-QB - Manufacturer Name: Knowles - License: https://creativecommons.org/licenses/by/4.0/ - Net Type: Analog microphone source **Pins:** - GND [pin 5] - GND [pin 2] - GND [pin 6] - GND [pin 3] - OUTPUT [pin 1] - VDD [pin 4] ### MK3 — T5838-flux - Role Details: T5838 always-on AAD wake microphone on MIC_1V8 with WAKE routed through U13 and THSEL kept MCU-driven for firmware configuration - Package: SMD - Role: Always-on Wake Microphone - Part Type: RF Filter - Datasheet URL: http://xx - Manufacturer Part Number: T5838 - Manufacturer Name: TDK - Net Type: Power on MIC_1V8; Low Voltage Control/Data on T5838_WAKE_1V8/T5838_CLK/T5838_DATA/T5838_THSEL **Pins:** - CLOCK [pin 6] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - THSEL [pin 5] - VDD [pin 5] - WAKE [pin 4] ### Q2 — [2N7002K](https://www.flux.ai/jecstronic/2n7002k.md) - Part Type: Transistor - Role: MOSFET Switch - Role Details: Low-side switch for active buzzer controlled by ESP32 GPIO - Manufacturer Part Number: 2N7002K - Package: SOT-23 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.infineon.com/dgdl/Infineon-2N7002-DS-v02_04-en.pdf - Manufacturer Name: MDD **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### SW1 — [SW_Push](https://www.flux.ai/adrian95/swpush.md) - Manufacturer Part Number: 1301.9314 - Part Type: Switch - Role Details: Momentary wake/boot button for user input and ESP32 boot strap - Role: Pushbutton - Datasheet URL: https://us.schurter.com/en/datasheet/typ_6x6_mm_tact_switches.pdf - Package: SMD - Manufacturer Name: Schurter Inc. **Pins:** - 1 - 2 ### SW2 — [SW_Push](https://www.flux.ai/adrian95/swpush.md) - Role Details: Momentary reset button for ESP32 EN pin - Role: Pushbutton - Part Type: Switch - Manufacturer Part Number: 1301.9314 - Package: SMD - Manufacturer Name: Schurter Inc. - Datasheet URL: https://us.schurter.com/en/datasheet/typ_6x6_mm_tact_switches.pdf **Pins:** - 1 - 2 ### SW3 — [SW_Push](https://www.flux.ai/adrian95/swpush.md) - Datasheet URL: https://us.schurter.com/en/datasheet/typ_6x6_mm_tact_switches.pdf - Manufacturer Name: Schurter Inc. - Role: Pushbutton - Manufacturer Part Number: 1301.9314 - Package: SMD - Role Details: Momentary wake or boot button for user input and ESP32 boot strap - Part Type: Switch **Pins:** - 1 - 2 ### SW4 — [SW_Push](https://www.flux.ai/adrian95/swpush.md) - Datasheet URL: https://us.schurter.com/en/datasheet/typ_6x6_mm_tact_switches.pdf - Manufacturer Name: Schurter Inc. - Role Details: Momentary reset button for ESP32 EN pin - Role: Pushbutton - Manufacturer Part Number: 1301.9314 - Package: SMD - Part Type: Switch **Pins:** - 1 - 2 ### TP1 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Package: SMD - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access - Role: Test Point **Pins:** - P1 ### TP10 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Package: SMD - Role: Test Point - Role Details: SYS rail test point **Pins:** - P1 ### TP11 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role Details: 3V3 rail test point - Role: Test Point - Package: SMD **Pins:** - P1 ### TP12 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role: Test Point - Package: SMD - Role Details: MIC_1V8 rail test point **Pins:** - P1 ### TP13 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Package: SMD - Role Details: VIN5V boosted rail test point for CI1302 - Role: Test Point **Pins:** - P1 ### TP14 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role Details: VBAT_SENSE ADC test point - Package: SMD - Role: Test Point **Pins:** - P1 ### TP15 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Package: SMD - Role: Test Point - Role Details: USB_5V input test point **Pins:** - P1 ### TP16 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role: Test Point - Role Details: CI1302_DBG_TX debug UART test point - Package: SMD **Pins:** - P1 ### TP2 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Package: SMD - Role: Test Point - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access **Pins:** - P1 ### TP3 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Package: SMD - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access - Role: Test Point **Pins:** - P1 ### TP4 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access - Package: SMD - Role: Test Point **Pins:** - P1 ### TP5 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access - Role: Test Point - Package: SMD **Pins:** - P1 ### TP6 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access - Role: Test Point - Package: SMD **Pins:** - P1 ### TP7 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access - Package: SMD - Role: Test Point **Pins:** - P1 ### TP8 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Package: SMD - Role Details: Used for VBAT, SYS, 3V3, 1V8, 5V boost, WAKE, UART TX and UART RX access - Role: Test Point **Pins:** - P1 ### TP9 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point.md) - Role: Test Point - Package: SMD - Role Details: VBAT test point **Pins:** - P1 ### U10 — [HTEW0154T8](https://www.flux.ai/vasy_skral/htew0154t8.md) - Manufacturer Name: Chengdu Heltec Automation technology CO., LTD - License: https://creativecommons.org/licenses/by/4.0/ - Product Info Url: https://heltec.org/project/154-e-ink/ - Purchase Url: https://www.aliexpress.com/item/1005005765133180.html - Manufacturer Part Number: HTEW0154T8 - Role Details: SPI e-ink display with BUSY, RESET, DC, CS, CLK and DIN interface - Package: Module - Role: Display - Datasheet URL: https://resource.heltec.cn/download/e-ink/154/1.54b%26w/HTEW0154T8_V20/HTEW0154T8_V20.pdf - Part Type: Display Device **Pins:** - BUSY [pin 7] - CLK [pin 6] - CS [pin 5] - D/C [pin 3] - GND [pin 2] - SDI [pin 4] - VCC [pin 1] ### U11 — [ME6211C33M5](https://www.flux.ai/kicad-part-library/me6211c33m5.md) - Package: SOT-23-5 - Package or Case Code: SOT-23-5 - Manufacturer Part Number: ME6211C33M5 - Role: LDO - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_2304140030_MICRONE-Nanjing-Micro-One-Elec-ME6211C33R5G_C235316.pdf - Role Details: Main 3.3V regulator for ESP32-S3, e-ink display, LED, logic and support circuitry - Manufacturer Name: Micron Technology, Inc. **Pins:** - CE [pin 3] - NC [pin 4] - V_{IN} [pin 1] - V_{OUT} [pin 5] - V_{SS} [pin 2] ### U12 — [TPS79318-EP](https://www.flux.ai/kicad-part-library/tps79318-ep.md) - Role Details: Dedicated 1.8V always-on low-noise rail for T5838 microphone and level shifter low-side supply - Datasheet URL: http://www.ti.com/lit/ds/symlink/tps79333-ep.pdf - Package: SOT-23-5 - Role: LDO - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: TPS79318-EP - Package or Case Code: SOT-23-5 **Pins:** - BP [pin 4] - EN [pin 3] - GND [pin 2] - IN [pin 1] - OUT [pin 5] ### U13 — [74LVC1T45W6-7](https://www.flux.ai/adrian95/74lvc1t45w6-7.md) - Role Details: Translate T5838 wake and control signals between 1.8V microphone domain and 3.3V ESP32 domain - Package: SOT-26 - Role: Level Shifter - Manufacturer Name: Diodes Incorporated - Datasheet URL: https://www.diodes.com/assets/Datasheets/74LVC1T45.pdf - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 74LVC1T45W6-7 **Pins:** - A [pin 3] - B [pin 4] - DIR [pin 5] - GND [pin 2] - VCCA [pin 1] - VCCB [pin 6] ### U14 — CI1302-flux-SSOP24 - Package: SSOP-24 - JLCPCB Part Class: Extended Part - Manufacturer Name: chipintelli - Manufacturer Part Number: CI1302-SSOP24 - Net Type: Power on VIN5V/VDD33/VDD11/AVDD; Analog on CI_MICBIAS and microphone pins; Low Speed UART on PA5/PA6/PB5/PB6 - Part Type: CI1302 - Role: Backup ASR Processor - LCSC Part Number: CI1302 - Role Details: CI1302 optional backup ASR chain powered from boosted VIN5V and connected to the analog microphone bias/coupling network plus reserved UART/debug paths - Datasheet URL: https://xx - Product Info Url: https://lcsc.com/product-detail/Other-Processors-and-Microcontrollers-MCUs_CHIPSEA-CSU18MB86-SS0P24_C914962.html - Package or Case Code: SSOP-24_L8.7-W3.9-P0.64-LS6.0-BL-1 **Pins:** - AGND [pin 24] - AIN2 [pin 16] - AVDD [pin 1] - GND [pin 5] - GND [pin 8] - HPOUT [pin 17] - MICBIAS [pin 22] - MICNL [pin 20] - MICNR [pin 19] - MICPL [pin 21] - MICPR [pin 18] - PA2 [pin 9] - PA3 [pin 10] - PA4 [pin 12] - PA5 [pin 11] - PA6 [pin 13] - PB5 [pin 14] - PB6 [pin 15] - VCM [pin 23] - VDD11 [pin 4] - VDD33 [pin 3] - VIN5V [pin 2] - XIN [pin 6] - XOUT [pin 7] ### U15 — [TPD4E02B04DQA](https://www.flux.ai/kicad-part-library/tpd4e02b04dqa.md) - Datasheet URL: http://www.ti.com/lit/ds/symlink/tpd4e02b04.pdf - Role Details: Protect USB-C VBUS and D+/D- against ESD events - Role: ESD Protection - Package: USON-10 - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: USON-10_2.5x1.0mm_P0.5mm - Manufacturer Part Number: TPD4E02B04DQA **Pins:** - G [pin 3] - G [pin 8] - IO1 [pin 1] - IO2 [pin 2] - IO3 [pin 4] - IO4 [pin 5] - NC [pin 10] - NC [pin 7] - NC [pin 9] - NC [pin 6] ### U8 — [BQ24075RGTT](https://www.flux.ai/jecstronic/bq24075rgtt.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/bq24075.pdf - Role: Battery Charger - Role Details: USB-C powered single-cell charger and system power-path manager - Package: VQFN-16 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Part Type: Power Management - Manufacturer Part Number: BQ24075RGTT **Pins:** - ~CE [pin 4] - ~CHG [pin 9] - ~PGOOD [pin 7] - BAT_1 [pin 2] - BAT_2 [pin 3] - EN1 [pin 6] - EN2 [pin 5] - ILIM [pin 12] - IN [pin 13] - ISET [pin 16] - OUT_1 [pin 10] - OUT_2 [pin 11] - SYSOFF [pin 15] - TMR [pin 14] - TS [pin 1] - VSS [pin 8] - VSS_THERMAL_PAD [pin 17] ### U9 — [MP3416GJ-Z](https://www.flux.ai/monolithicpower/mp3416gj-z.md) - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/M/P/MP3416_217_1.jpg - Role Details: Boost battery/system rail to 5V only when CI1302 backup chain is enabled - Manufacturer Part Number: MP3416GJ-Z - Manufacturer Name: Monolithic Power Systems - Role: Boost Converter - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/217?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP3416 - Package or Case Code: TSOT23-8_MP3416_MNP - Package: SOT-23-8 **Pins:** - EN [pin 6] - FB [pin 1] - GND [pin 2] - IN [pin 5] - LBI [pin 7] - LBO [pin 8] - OUT [pin 4] - SW [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/sunnykjy/misty-pink-replicator](https://www.flux.ai/sunnykjy/misty-pink-replicator).* --- *Generated from [https://www.flux.ai/sunnykjy/misty-pink-replicator](https://www.flux.ai/sunnykjy/misty-pink-replicator)*