# Neura Vital Patch ## Description Schematics and PCB layout for Neura Vital Patch with parameters ## Project Details - **Owner:** gnsk27 - **Created:** 7/27/2026 - **Last Updated:** 7/27/2026 - **Visibility:** Public ## Key Components ### D3 — [PESD3V3L5UY](https://www.flux.ai/kicad-part-library/pesd3v3l5uy~ysh.md) - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: SOT-363_SC-70-6 - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/PESDXL5UF_V_Y.pdf - Manufacturer Part Number: PESD3V3L5UY - Role Details: Candidate electrode/biopotential ESD array; leakage must be verified against patient/electrochemical input budget. - Functional Group: Protection - Role: Low-Leakage ESD Protection **Pins:** - A [pin 2] - K1 [pin 1] - K2 [pin 3] - K3 [pin 4] - K4 [pin 5] - K5 [pin 6] ### J1 — [TYPE-C-16M-0243MD](https://www.flux.ai/lcsc/type-c-16m-0243md~qm.md) - Functional Group: Connectors - LCSC Part Number: C2798172 - Manufacturer Name: USAKRO(美韩) - Package or Case Code: USB-C-SMD_TYPE-611-T3-W - JLCPCB Part Class: Extended Part - Manufacturer Part Number: TYPE-C-16M-0243MD - Role Details: USB-C sink for charging; patient-connected measurements must be hardware-disabled while attached. - Datasheet URL: https://www.lcsc.com/datasheet/C2798172.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=QlUIU1dSRgJcA1FQQVUMBgdeElQIVldRQ1daVQdeQAcxVlNRTlhWVFFTQ1hXUjsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Part Type: USB Connectors - Role: USB-C Connector **Pins:** - 17 [pin 17] - 18 [pin 18] - 19 [pin 19] - 20 [pin 20] - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin A1] - GND [pin A12] - GND [pin B1] - GND [pin B12] - SBU1 [pin A8] - SBU2 [pin B8] - VBUS [pin A9] - VBUS [pin B4] - VBUS [pin B9] - VBUS [pin A4] ### J2 — [S2B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/lcsc/s2b-ph-sm4-tblfsn~dy5m.md) - LCSC Part Number: C295747 - Functional Group: Connectors - Connector Gender: Female - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2102031704_JST-S2B-PH-SM4-TB-LF-SN_C295747.pdf - Manufacturer Name: JST - Connector Rows: 1 - Role Details: 2-pin JST-PH LiPo pack input; use protected cell/pack with NTC routed separately or local thermistor. - Connector Type: Wire-to-board connector - Connector Positions: 2 - JLCPCB Part Class: Extended Part - Role: Battery Connector - Package or Case Code: CONN-SMD_P2.00_S2B-PH-SM4-TB-LF-SN - Manufacturer Part Number: S2B-PH-SM4-TB(LF)(SN) - Part Type: Wire To Board / Wire To Wire Connector - Connector Pitch: 2mm - Product Info Url: https://lcsc.com/product-detail/_JST-Sales-America_S2B-PH-SM4-TB-LF-SN_JST-Sales-America-S2B-PH-SM4-TB-LF-SN_C295747.html **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J3 — [5034801000](https://www.flux.ai/adrian95/5034801000~ef9.md) - Role Details: Routes ECG electrodes, electrochemical WE/RE/CE electrodes, pressure/optical flex tails, and guard/reference lines. - Manufacturer Name: Molex - Part Type: Connector - Functional Group: Connectors - Manufacturer Part Number: 5034801000 - Role: FPC Sensor/Electrode Connector - Datasheet URL: https://tools.molex.com/pdm_docs/sd/5034801000_sd.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 10 [pin 10] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### J4 — [5034801000](https://www.flux.ai/adrian95/5034801000~ef9.md) - Role: FPC Sensor/Electrode Connector - Manufacturer Name: Molex - Part Type: Connector - Role Details: Routes ECG electrodes, electrochemical WE/RE/CE electrodes, pressure/optical flex tails, and guard/reference lines. - Functional Group: Connectors - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 5034801000 - Datasheet URL: https://tools.molex.com/pdm_docs/sd/5034801000_sd.pdf **Pins:** - 1 [pin 1] - 10 [pin 10] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### J5 — [ARM JTAG SWD 10Pin 0.05" Connector](https://www.flux.ai/vasy_skral/arm-jtag-swd-10pin-005-connector~y0b.md) - Manufacturer Part Number: FTSH-105-01-L-DV-007-K - Datasheet URL: https://suddendocs.samtec.com/catalog_english/ftsh_smt.pdf - Role: SWD Debug Connector - Symbol Style: parametric-v1 - Part Type: Connector - Functional Group: Debug / Programming - Role Details: Cortex 10-pin SWD header; lock/secure debug for production biomedical builds. - Manufacturer Name: Analog Devices **Pins:** - ~RESET~ [pin 10] - GND [pin 5] - GND [pin 3] - GNDDetect [pin 9] - NC/TDI [pin 8] - SWDCLK/TCK [pin 4] - SWDIO/TMS [pin 2] - SWO/TDO [pin 6] - VTref [pin 1] ### Q1 — [IRLML2502](https://www.flux.ai/lcsc/irlml2502~q9d8.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2005121032_HUASHUO-IRLML2502_C518800.pdf - LCSC Part Number: C518800 - Role Details: USB-present hardware interlock: NMOS clamps PATIENT_SW_CTRL low via drain-source path whenever USB_VBUS drives gate high through R27; R25 limits MCU contention current. - JLCPCB Part Class: Extended Part - Package or Case Code: SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR - Product Info Url: https://lcsc.com/product-detail/MOSFET_HUASHUO-IRLML2502_C518800.html - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Patient Safety Disconnect, Power / Charging - Part Type: MOSFETs - Manufacturer Name: HUASHUO(华朔) - Role: Protection - Manufacturer Part Number: IRLML2502 **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### RT1 — [NTCSC0402E3103FLFT](https://www.flux.ai/adrian95/ntcsc0402e3103flft~i0t.md) - Manufacturer Name: Vishay Dale - Resistance: 10kΩ - License: https://creativecommons.org/licenses/by/4.0/ - Functional Group: Power / Charging, Patient Safety - Role Details: 10 kΩ NTC thermistor on BQ24074 TS; place/bond in thermal contact with the LiPo cell. Charger suspends outside approximately 0°C to 50°C for 10 kΩ NTC curve per BQ24074 datasheet. - Manufacturer Part Number: NTCSC0402E3103FLFT - Role: Sensing (Shunt) - Datasheet URL: https://www.vishay.com/docs/29238/ntcsc0402e3t.pdf - Part Type: Thermistor **Pins:** - ~ [pin 2] - ~ [pin 1] ### SW1 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - LCSC Part Number: C720477 - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Functional Group: User / Debug Controls - Manufacturer Name: XUNPU(讯普) - JLCPCB Part Class: Extended Part - Part Type: Tactile Switches - Role Details: Reset/boot/user control switch for bring-up. - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Role: Tactile Switch - Manufacturer Part Number: TS-1088-AR02016 **Pins:** - 1 [pin 1] - 2 [pin 2] ### SW2 — [TS-1088-AR02016](https://www.flux.ai/lcsc/ts-1088-ar02016~e3n1.md) - Part Type: Tactile Switches - Role: Tactile Switch - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_XUNPU-TS-1088-AR02016_C720477.html - Functional Group: User / Debug Controls - Manufacturer Part Number: TS-1088-AR02016 - Package or Case Code: SW-SMD_L3.9-W3.0-P4.45 - Role Details: Reset/boot/user control switch for bring-up. - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302330_XUNPU-TS-1088-AR02016_C720477.pdf - LCSC Part Number: C720477 - Manufacturer Name: XUNPU(讯普) - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [MDBT50Q-1MV2](https://www.flux.ai/jecstronic/mdbt50q-1mv2~4xq.md) - Manufacturer Name: Raytac - Part Type: Module - Role Details: nRF52840 module; central controller, BLE telemetry, SPI/I2C sensor master; antenna must sit at flex edge with keepout. - Manufacturer Part Number: MDBT50Q-1MV2 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.raytac.com/download/index.php?index_id=43 - Functional Group: BLE MCU / Compute - Role: BLE MCU Module **Pins:** - D- [pin 34] - D+ [pin 35] - DCCH [pin 31] - GND [pin 1] - GND [pin 15] - GND [pin 2] - GND [pin 55] - GND [pin 33] - P0.00/XL1 [pin 17] - P0.01/XL2 [pin 18] - P0.02/AIN0 [pin 11] - P0.03/AIN1 [pin 9] - P0.04/AIN2 [pin 20] - P0.05/AIN3 [pin 21] - P0.06 [pin 22] - P0.07/TRACECLK [pin 23] - P0.08 [pin 24] - P0.09/NFC1 [pin 52] - P0.10/NFC2 [pin 54] - P0.11/TRACEDATA2 [pin 27] - P0.12/TRACEDATA1 [pin 29] - P0.13 [pin 37] - P0.14 [pin 36] - P0.15 [pin 39] - P0.16 [pin 38] - P0.17 [pin 41] - P0.18/~RESET [pin 40] - P0.19 [pin 42] - P0.20 [pin 44] - P0.21 [pin 43] - P0.22 [pin 46] - P0.23 [pin 45] - P0.24 [pin 48] - P0.25 [pin 49] - P0.26 [pin 19] - P0.27 [pin 16] - P0.28/AIN4 [pin 13] - P0.29/AIN5 [pin 10] - P0.30/AIN6 [pin 14] - P0.31/AIN7 [pin 12] - P1.00/TRACEDATA0 [pin 47] - P1.01 [pin 61] - P1.02 [pin 50] - P1.03 [pin 60] - P1.04 [pin 56] - P1.05 [pin 59] - P1.06 [pin 57] - P1.07 [pin 58] - P1.08 [pin 25] - P1.09/TRACEDATA3 [pin 26] - P1.10 [pin 3] - P1.11 [pin 4] - P1.12 [pin 5] - P1.13 [pin 6] - P1.14 [pin 7] - P1.15 [pin 8] - SWDCLK [pin 53] - SWDIO [pin 51] - VBUS [pin 32] - VDD [pin 28] - VDDH [pin 30] ### U10 — [MAX17048G+T10](https://www.flux.ai/lcsc/max17048gplust10~jvyd.md) - Role Details: I2C fuel gauge for LiPo SOC/runtime tracking and battery safety telemetry. - JLCPCB Part Class: Extended Part - Manufacturer Part Number: MAX17048G+T10 - Symbol Style: parametric-v1 - Part Type: Battery Management ICs - Role: Battery Fuel Gauge - LCSC Part Number: C2682616 - Package or Case Code: DFN-8_L2.0-W2.0-P0.50-BL-EP - Manufacturer Name: MAXIM - Functional Group: Power / Battery Monitor - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/MAX17048-MAX17049.pdf **Pins:** - ~{ALRT} [pin 5] - CELL [pin 2] - CTG [pin 1] - EP [pin 9] - GND [pin 4] - QSTRT [pin 6] - SCL [pin 7] - SDA [pin 8] - VDD [pin 3] ### U11 — [ADG824BCP](https://www.flux.ai/kicad-part-library/adg824bcp~e78.md) - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: Analog_LFCSP-UQ-10_1.3x1.6mm_P0.4mm - Role: Patient Electrode Disconnect Switch - Role Details: Hardware disconnect for ECG/electrochemical electrode paths during USB presence; exact leakage/fault rating requires datasheet verification. - Functional Group: Patient Safety Disconnect - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/ADG884.pdf - Manufacturer Part Number: ADG824BCP **Pins:** - D1 [pin 2] - D2 [pin 8] - GND [pin 10] - IN1 [pin 4] - IN2 [pin 5] - S1A [pin 1] - S1B [pin 3] - S2A [pin 9] - S2B [pin 7] - VDD [pin 6] ### U12 — [ADG824BCP](https://www.flux.ai/kicad-part-library/adg824bcp~e78.md) - Package or Case Code: Analog_LFCSP-UQ-10_1.3x1.6mm_P0.4mm - Manufacturer Name: Texas Instruments Inc. - Role Details: Hardware disconnect for ECG/electrochemical electrode paths during USB presence; exact leakage/fault rating requires datasheet verification. - Role: Patient Electrode Disconnect Switch - Functional Group: Patient Safety Disconnect - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/ADG884.pdf - Manufacturer Part Number: ADG824BCP **Pins:** - D1 [pin 2] - D2 [pin 8] - GND [pin 10] - IN1 [pin 4] - IN2 [pin 5] - S1A [pin 1] - S1B [pin 3] - S2A [pin 9] - S2B [pin 7] - VDD [pin 6] ### U13 — [ADG824BCP](https://www.flux.ai/kicad-part-library/adg824bcp~e78.md) - Package or Case Code: Analog_LFCSP-UQ-10_1.3x1.6mm_P0.4mm - Manufacturer Name: Texas Instruments Inc. - Role: Patient Electrode Disconnect Switch - Functional Group: Patient Safety Disconnect - Role Details: Hardware disconnect for ECG/electrochemical electrode paths during USB presence; exact leakage/fault rating requires datasheet verification. - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/ADG884.pdf - Manufacturer Part Number: ADG824BCP **Pins:** - D1 [pin 2] - D2 [pin 8] - GND [pin 10] - IN1 [pin 4] - IN2 [pin 5] - S1A [pin 1] - S1B [pin 3] - S2A [pin 9] - S2B [pin 7] - VDD [pin 6] ### U14 — [TPD1E05U06DPYR](https://www.flux.ai/lcsc/tpd1e05u06dpyr~sh59.md) - Manufacturer Part Number: TPD1E05U06DPYR - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/lit/ds/symlink/tpd1e05u06.pdf - Role Details: USB-C VBUS transient/ESD clamp placed close to connector. - Manufacturer Name: TPD1E05U06DPYR - JLCPCB Part Class: Extended Part - LCSC Part Number: C2937017 - Role: ESD Protection - Part Type: ESD and Surge Protection (TVS/ESD) - Functional Group: Protection - Package or Case Code: DFN1006-2L-RD **Pins:** - A [pin 2] - C [pin 1] ### U2 — [BQ24074RGTT](https://www.flux.ai/lcsc/bq24074rgtt~fpyl.md) - Operating Voltage: IN operating range 4.35–10.2 V for BQ24074; IN withstand/recommended range up to 26 V, abs max 28 V - Operating Temperature: -40 to 85°C - Implementation Details: Standalone single-cell Li-Ion/Li-Polymer linear charger and power-path management IC; 4.2 V battery regulation, 4.4 V OUT regulation, 10.5 V OVP, 1.5 A programmable fast charge/input current limit. - Manufacturer Part Number: BQ24074RGTT - Symbol Style: parametric-v1 - Package: VQFN-16 RGT (3 mm × 3 mm) with exposed thermal pad - JLCPCB Part Class: Extended Part - Part Type: Battery Management ICs - Role: Battery Charger / Power Path - Functional Group: Power / Charging - Role Details: USB-C input to LiPo/SYS power path; charge current to be conservative for skin-contact wearable; TS used for battery NTC. - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/bq24074.pdf - LCSC Part Number: C2861252 - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: VQFN-16_L3.0-W3.0-P0.50-TL-EP1.7 **Pins:** - ~{CE} [pin 4] - ~{CHG} [pin 9] - ~{PGOOD} [pin 7] - BAT [pin 2] - BAT [pin 3] - EN1 [pin 6] - EN2 [pin 5] - EP [pin 17] - ILIM [pin 12] - IN [pin 13] - ISET [pin 16] - ITERM [pin 15] - OUT [pin 11] - OUT [pin 10] - TMR [pin 14] - TS [pin 1] - VSS [pin 8] ### U3 — [TPS63031DSKR](https://www.flux.ai/adrian95/tps63031dskr~yd3.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps63030.pdf - Role Details: Generates VSYS_3V3 from charger SYS/BAT rail; sized for BLE + AFEs + PPG LED pulse load budget ~150 mA peak. - License: https://creativecommons.org/licenses/by/4.0/ - Role: 3.3V Buck-Boost Regulator - Manufacturer Part Number: TPS63031DSKR - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Functional Group: Power / Regulation **Pins:** - EN [pin 6] - EP [pin 11] - FB [pin 10] - GND [pin 9] - L1 [pin 4] - L2 [pin 2] - PGND [pin 3] - PS/SYNC [pin 7] - VIN [pin 5] - VINA [pin 8] - VOUT [pin 1] ### U4 — [LDK130PU-R](https://www.flux.ai/adrian95/ldk130pu-r~4l1.md) - Part Type: Integrated Circuit - Datasheet URL: https://www.st.com/resource/en/datasheet/ldk130.pdf - Role: 1.8V Low-Noise LDO - Functional Group: Power / Regulation - Manufacturer Name: STMicroelectronics - Role Details: Creates VDD_1V8 for MAX30102 core and optional 1.8 V digital/analog domains. - Manufacturer Part Number: LDK130PU-R - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ADJ [pin 3] - EN [pin 4] - GND [pin 2] - IN [pin 6] - NC [pin 5] - OUT [pin 1] ### U5 — [ADS1292RIRSMR](https://www.flux.ai/lcsc/ads1292rirsmr~kn10.md) - LCSC Part Number: C456281 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010131_Texas-Instruments-ADS1292RIRSMR_C456281.pdf - Manufacturer Name: TI(德州仪器) - Product Info Url: https://lcsc.com/product-detail/Analog-To-Digital-Converters-ADCs_Texas-Instruments-Texas-Instruments-ADS1292RIRSMR_C456281.html - Functional Group: ECG AFE - Package or Case Code: QFN-32_L4.0-W4.0-P0.40-TL-EP2.8 - JLCPCB Part Class: Extended Part - Role Details: Battery-only patient-applied ECG acquisition; inputs routed through current limiting, ESD, and hardware disconnect. - Role: ECG Analog Front End - Manufacturer Part Number: ADS1292RIRSMR - Part Type: Analog To Digital Converters (ADCs) **Pins:** - ~{CS} [pin 18] - ~{DRDY} [pin 22] - ~{PWDN}/~{RESET} [pin 15] - AVDD [pin 12] - AVSS [pin 13] - CLK [pin 17] - CLKSEL [pin 14] - DGND [pin 24] - DIN [pin 19] - DOUT [pin 21] - DVDD [pin 23] - EP [pin 33] - GPIO1/RCLK1 [pin 26] - GPIO2/RCLK2 [pin 25] - IN1N [pin 3] - IN1P [pin 4] - IN2N [pin 5] - IN2P [pin 6] - PGA1N [pin 1] - PGA1P [pin 2] - PGA2N [pin 7] - PGA2P [pin 8] - RESP_MODN/IN3N [pin 32] - RESP_MODP/IN3P [pin 31] - RLDIN/RLDREF [pin 29] - RLDINV [pin 28] - RLDOUT [pin 30] - SCLK [pin 20] - START [pin 16] - VCAP1 [pin 11] - VCAP2 [pin 27] - VREFN [pin 10] - VREFP [pin 9] ### U6 — [MAX30102EFD+T](https://www.flux.ai/adrian95/max30102efdplust~tfq.md) - Functional Group: PPG / Heart Rate - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/MAX30102.pdf - Manufacturer Part Number: MAX30102EFD+T - Part Type: Sensor - Role: PPG Heart-Rate Sensor - Role Details: Heart-rate PPG; requires 1.8 V VDD, 3.3 V LED supply, optical isolation, and contact-pressure compensation. - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~INT [pin 13] - GND [pin 12] - PGND [pin 4] - SCL [pin 2] - SDA [pin 3] - VDD [pin 11] - VLED+ [pin 10] - VLED+ [pin 9] ### U7 — [AD5940BCBZ-RL7](https://www.flux.ai/lcsc/ad5940bcbz-rl7~ibmq.md) - Package or Case Code: BGA-56_L4.2-W3.6-R8-C7-P0.40-TL - Manufacturer Part Number: AD5940BCBZ-RL7 - LCSC Part Number: C650308 - Role: Electrochemical AFE - Functional Group: Electrochemical AFE - Manufacturer Name: ADI(亚德诺) - JLCPCB Part Class: Extended Part - Role Details: Research-grade sweat/ISF lactate and glucose acquisition; supports amperometric/EIS methods; clinical analyte claims require validation. **Pins:** - ~{RESET} [pin F1] - AFE1 [pin B2] - AFE2 [pin C2] - AFE3 [pin A2] - AFE4 [pin A1] - AGND [pin E3] - AGND [pin C4] - AGND_REF [pin D5] - AIN0 [pin D2] - AIN1 [pin B3] - AIN2 [pin A3] - AIN3/BUF_VREF1V8 [pin B5] - AIN4/LPF0 [pin B4] - AIN6 [pin C5] - AVDD [pin F2] - AVDD [pin A4] - AVDD_REG [pin D8] - CE0 [pin A7] - CS [pin F7] - DE0 [pin B6] - DGND [pin E4] - DGND [pin E6] - DGND [pin E5] - DNC [pin G8] - DNC [pin C3] - DNC [pin D4] - DNC [pin G1] - DNC [pin D3] - DVDD [pin F3] - DVDD_REG_1V8 [pin G3] - GPIO0 [pin F5] - GPIO1 [pin D6] - GPIO2 [pin E1] - GPIO3 [pin E2] - GPIO4 [pin G7] - GPIO5 [pin F6] - GPIO6 [pin F4] - GPIO7 [pin G4] - IOVDD [pin G2] - MISO [pin E8] - MOSI [pin E7] - RC0_0 [pin C8] - RC0_1 [pin B8] - RC0_2 [pin C6] - RCAL0 [pin C1] - RCAL1 [pin B1] - RE0 [pin A8] - SCLK [pin F8] - SE0 [pin A6] - VBIAS_CAP [pin D1] - VBIAS0 [pin C7] - VREF_1V82 [pin A5] - VREF_2V5 [pin D7] - VZERO0 [pin B7] - XTALI [pin G5] - XTALO [pin G6] ### U8 — [MPRLS0300YG00001B](https://www.flux.ai/jecstronic/mprls0300yg00001b~xpa.md) - Part Type: Sensor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: MPRLS0300YG00001B - Functional Group: Pressure / Contact - Datasheet URL: https://prod-edam.honeywell.com/content/dam/honeywell-edam/sps/siot/en-us/products/sensors/pressure-sensors/board-mount-pressure-sensors/micropressure-mpr-series/documents/sps-siot-mpr-series-datasheet-32332628-ciid-172626.pdf - Manufacturer Name: Honeywell Sensing and Productivity Solutions - Role Details: I2C gauge pressure/contact-quality sensor; not sufficient alone for clinical blood-pressure claim. - Role: Pressure Sensor **Pins:** - EOC [pin 8] - MISO [pin 7] - MOSI/SDA [pin 2] - NC [pin 11] - NC [pin 5] - RES [pin 9] - SCL/SCLK [pin 3] - SS [pin 1] - VDD [pin 12] - VO- [pin 6] - VO+ [pin 4] - VSS [pin 10] ### U9 — [KX022-1020](https://www.flux.ai/kicad-part-library/kx022-1020~cg.md) - Manufacturer Name: Texas Instruments Inc. - Functional Group: Motion Sensing - Manufacturer Part Number: KX022-1020 - Datasheet URL: https://kionixfs.azureedge.net/en/datasheet/KX022-1020%20Specifications%20Rev%2012.0.pdf - Package or Case Code: LGA-12_2x2mm_P0.5mm - Role Details: I2C/SPI motion data for artifact rejection and wear-state detection. - Role: 3-Axis Accelerometer **Pins:** - ~{CS} [pin 10] - GND [pin 9] - INT1 [pin 5] - INT2 [pin 6] - IO_VDD [pin 3] - NC [pin 11] - SCLK/SCL [pin 12] - SDI/SDA [pin 2] - SDO/ADDR [pin 1] - TRIG [pin 4] - VDD [pin 7] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/gnsk27/neura-vital-patch~er](https://www.flux.ai/gnsk27/neura-vital-patch~er).* --- *Generated from [https://www.flux.ai/gnsk27/neura-vital-patch~er](https://www.flux.ai/gnsk27/neura-vital-patch~er)*