# Rubber Red R2-D2 ## Description Production-Ready Automotive Crash Detection Controller PCB (90x60mm) – 2-Layer with Arduino Nano, SIM7600E-H, IMU & RF ## Project Details - **Owner:** aerovhyn - **Created:** 10/23/2025 - **Last Updated:** 10/23/2025 - **Visibility:** Public - **Connectivity:** Cellular, UART, I2C - **SIM Connector Configuration:** On-board (production), Off-board (development variant) - **PowerTraceWidth:** 40mil - **Domain:** Automotive - **Board Height:** 60mm - **Design Variant Options:** Production, Development - **Antenna Keepout:** 20mm diameter centered at SIM7600E-H antenna feed - **System Architecture:** graph LR Power[Automotive Power Subsystem] -->|5V Buck / 3.3V LDO| MCU[Arduino Nano MCU] Power -->|3.8–4.0V Rail| SIM[SIM7600E-H Module] MCU -->|I2C| IMU[MPU-6050 IMU] MCU -->|INT| Piezo[Piezo Sensor Front-End] MCU -->|UART| SIM MCU -->|UART| PiUART[Pi UART Header] MCU --> JTAG[JTAG/SWD Header] MCU --> LEDs[LED Indicators] MCU --> BZR[Buzzer] MCU --> EXP[Expansion Headers] USB[Micro-USB Programming Connector] --> MCU Power --> Piezo Power --> TP[Testpoints] MCU --> TP SIM --> TP - **AntennaKeepout:** 20 mm radius around RF feed area (SIM7600E-H module) - **Microcontroller Platform:** Arduino Nano Compatible - **Domain Partitioning:** Board zones: Power domain (left side), RF domain (centered around SIM7600E-H, 20 mm keepout), Analog domain (bottom right). Partitioning supports layout isolation of power switching, analog front-ends, and sensitive RF paths. - **Board Width:** 90mm - **Expansion Header Testpoints:** None (production), Off-board testpoint components on EXP1/EXP2 (development variant) - **SignalTraceWidth:** 8mil - **Power Requirements:** Automotive - **Stackup:** 2-layer, 1.6 mm; 8 mil/8 mil clearance; 40 mil power traces - **Board Thickness:** 1.6 mm - **Stars:** 1 ## Key Components ### BZ1 — [CPT-9019S-SMT-TR](https://www.flux.ai/jecstronic/cpt-9019s-smt-tr~c1x.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: CUI Devices - Datasheet URL: https://www.cuidevices.com/product/resource/cpt-9019s-smt-tr.pdf - Part Type: Buzzer - Role Details: Audible alarm transducer - Role: Buzzer - Manufacturer Part Number: CPT-9019S-SMT-TR **Pins:** - 1 [pin 1] - 2 [pin 2] ### BZ1 — [CPT-9019S-SMT-TR](https://www.flux.ai/jecstronic/cpt-9019s-smt-tr~c1x.md) - Role: Buzzer - Manufacturer Part Number: CPT-9019S-SMT-TR - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Audible alarm transducer - Manufacturer Name: CUI Devices - Part Type: Buzzer - Datasheet URL: https://www.cuidevices.com/product/resource/cpt-9019s-smt-tr.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### D1 — [SD12.TCT](https://www.flux.ai/jecstronic/sd12tct~108.md) - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SD12.TCT - Role Details: Transient voltage suppressor for 25V automotive input - Datasheet URL: https://semtech.my.salesforce.com/sfc/p/#E0000000JelG/a/2R000000HTs3/lNzBkVYq.cpxQ_afC07HPVjXsdd1_gDzzxXpGNc69kM - Role: Protection - Manufacturer Name: Semtech Corporation **Pins:** - A1 [pin 1] - A2 [pin 2] ### D2 — [SP0502BAHT](https://www.flux.ai/kicad-part-library/sp0502baht~nla.md) - Package or Case Code: SOT-23 - Datasheet URL: http://www.littelfuse.com//media/files/littelfuse/technical%20resources/documents/data%20sheets/sp05xxba.pdf - Role: Protection - Manufacturer Name: Texas Instruments Inc. - Role Details: ESD protection for I2C SDA and SCL lines - Manufacturer Part Number: SP0502BAHT **Pins:** - A [pin 3] - K [pin 1] - K [pin 2] ### D3 — [PRTR5V0U2X](https://www.flux.ai/kicad-part-library/prtr5v0u2x~6bw.md) - Datasheet URL: https://assets.nexperia.com/documents/data-sheet/PRTR5V0U2X.pdf - Manufacturer Part Number: PRTR5V0U2X - Role Details: ESD protection for UART TX and RX lines - Role: Protection - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: SOT-143 **Pins:** - GND [pin 1] - I/O1 [pin 2] - I/O2 [pin 3] - VCC [pin 4] ### D4 — [USBLC6-2P6](https://www.flux.ai/kicad-part-library/usblc6-2p6~djt.md) - Package or Case Code: SOT-666 - Manufacturer Part Number: USBLC6-2P6 - Role: Protection - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: https://www.st.com/resource/en/datasheet/usblc6-2.pdf - Role Details: ESD protection for USB D+ and D- data lines **Pins:** - GND [pin 2] - I/O1 [pin 6] - I/O1 [pin 1] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### D5 — [B5819WS-TP](https://www.flux.ai/adrian95/b5819ws-tp~s1q.md) - Datasheet URL: https://www.mccsemi.com/pdf/Products/B5817WS-B5819WS(SOD-323).PDF - Role: Clamping - Manufacturer Part Number: B5819WS-TP - Manufacturer Name: Micro Commercial Co - Role Details: Clamp diode for piezo sensor front-end - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### DLED1, DLED2, DLED3, DLED4 — [150080VS75000](https://www.flux.ai/jecstronic/150080vs75000~qx.md) - Manufacturer Name: Würth Elektronik - Role: LED - Manufacturer Part Number: 150080VS75000 - Role Details: Status indicator LEDs - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.we-online.com/katalog/datasheet/150080VS75000.pdf - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### DLED1, DLED2, DLED3, DLED4 — [150080VS75000](https://www.flux.ai/jecstronic/150080vs75000~qx.md) - Manufacturer Part Number: 150080VS75000 - Manufacturer Name: Würth Elektronik - Role Details: Status indicator LEDs - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED - Datasheet URL: https://www.we-online.com/katalog/datasheet/150080VS75000.pdf - Role: LED **Pins:** - A [pin 2] - K [pin 1] ### DLED1, DLED2, DLED3, DLED4 — [150080VS75000](https://www.flux.ai/jecstronic/150080vs75000~qx.md) - Role: LED - Role Details: Status indicator LEDs - Part Type: LED - Datasheet URL: https://www.we-online.com/katalog/datasheet/150080VS75000.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 150080VS75000 - Manufacturer Name: Würth Elektronik **Pins:** - A [pin 2] - K [pin 1] ### DLED1, DLED2, DLED3, DLED4 — [150080VS75000](https://www.flux.ai/jecstronic/150080vs75000~qx.md) - Part Type: LED - Datasheet URL: https://www.we-online.com/katalog/datasheet/150080VS75000.pdf - Role Details: Status indicator LEDs - License: https://creativecommons.org/licenses/by/4.0/ - Role: LED - Manufacturer Part Number: 150080VS75000 - Manufacturer Name: Würth Elektronik **Pins:** - A [pin 2] - K [pin 1] ### EXP1 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/lcsc/s2b-ph-k-slfsn~vk6f.md) - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - Product Info Url: https://lcsc.com/product-detail/PH-Connectors_JST-Sales-America_S2B-PH-K-S-LF-SN_JST-Sales-America-S2B-PH-K-S-LF-SN_C173752.html - Manufacturer Name: JST - Part Type: Wire To Board / Wire To Wire Connector - Package or Case Code: CONN-TH_S2B-PH-K-S-LF-SN - Role Details: General purpose expansion header (2-pin) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-S2B-PH-K-S-LF-SN_C173752.pdf - JLCPCB Part Class: Extended Part - Role: Connector - LCSC Part Number: C173752 **Pins:** - 1 [pin 1] - 2 [pin 2] ### EXP1, EXP2 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/lcsc/s2b-ph-k-slfsn~vk6f.md) - Product Info Url: https://lcsc.com/product-detail/PH-Connectors_JST-Sales-America_S2B-PH-K-S-LF-SN_JST-Sales-America-S2B-PH-K-S-LF-SN_C173752.html - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - Role: Connector - Manufacturer Name: JST - Part Type: Wire To Board / Wire To Wire Connector - Package or Case Code: CONN-TH_S2B-PH-K-S-LF-SN - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-S2B-PH-K-S-LF-SN_C173752.pdf - JLCPCB Part Class: Extended Part - LCSC Part Number: C173752 - Role Details: General purpose expansion header (2-pin) **Pins:** - 1 [pin 1] - 2 [pin 2] ### EXP1, EXP2 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/lcsc/s2b-ph-k-slfsn~vk6f.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-S2B-PH-K-S-LF-SN_C173752.pdf - JLCPCB Part Class: Extended Part - LCSC Part Number: C173752 - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - Product Info Url: https://lcsc.com/product-detail/PH-Connectors_JST-Sales-America_S2B-PH-K-S-LF-SN_JST-Sales-America-S2B-PH-K-S-LF-SN_C173752.html - Role Details: General purpose expansion header (2-pin) - Manufacturer Name: JST - Role: Connector - Package or Case Code: CONN-TH_S2B-PH-K-S-LF-SN - Part Type: Wire To Board / Wire To Wire Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### EXP2 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/lcsc/s2b-ph-k-slfsn~vk6f.md) - LCSC Part Number: C173752 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-S2B-PH-K-S-LF-SN_C173752.pdf - Role Details: General purpose expansion header (2-pin) - JLCPCB Part Class: Extended Part - Manufacturer Name: JST - Package or Case Code: CONN-TH_S2B-PH-K-S-LF-SN - Part Type: Wire To Board / Wire To Wire Connector - Product Info Url: https://lcsc.com/product-detail/PH-Connectors_JST-Sales-America_S2B-PH-K-S-LF-SN_JST-Sales-America-S2B-PH-K-S-LF-SN_C173752.html - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - Role: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] ### J_BATT — [B2B-PH-K-S(LF)(SN)](https://www.flux.ai/lcsc/b2b-ph-k-slfsn~yvsw.md) - Connector Rows: 1 - Connector Positions: 2 - Connector Gender: Male - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-B2B-PH-K-S-LF-SN_C131337.pdf - JLCPCB Part Class: Extended Part - LCSC Part Number: C131337 - Connector Type: Wire To Board Connector - Connector Pitch: 2mm - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Product Info Url: https://lcsc.com/product-detail/PH-Connectors_JST_B2B-PH-K-S-LF-SN_B2B-PH-K-S-LF-SN_C131337.html - Role: Connector - Role Details: Battery connector (2-pin PH) - Part Type: Wire To Board / Wire To Wire Connector - Package or Case Code: CONN-TH_B2B-PH-K-S - Manufacturer Name: JST **Pins:** - 1 [pin 1] - 2 [pin 2] ### J_SIM — [SIM8051-6-0-14-00-A](https://www.flux.ai/adrian95/sim8051-6-0-14-00-a~2xb.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/GCT%20PDFs/SIM8051_Spec.pdf - Manufacturer Name: GCT - Part Type: Connector - Role: Connector - Manufacturer Part Number: SIM8051-6-0-14-00-A - Role Details: SIM card holder **Pins:** - CLK [pin C3] - GND [pin C5] - I/O [pin C7] - RST [pin C2] - VCC [pin C1] - VPP [pin C6] ### J_SIM_DEV — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x06-254mm-vertical~jyw.md) - Role: Connector - Role Details: Off-board SIM interface header for development variant exposing SIM card signals - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### J_UART — [B4B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/b4b-ph-k-slfsn~64f.md) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Part Number: B4B-PH-K-S(LF)(SN) - Role: Connector - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: JST Sales America Inc. - Role Details: UART header for Pi connectivity (4-pin PH) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J_UART — [B4B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/b4b-ph-k-slfsn~64f.md) - Manufacturer Name: JST Sales America Inc. - Role Details: UART header for Pi connectivity (4-pin PH) - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Part Number: B4B-PH-K-S(LF)(SN) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### JTAG — [2x5 Pin Shrouded Header](https://www.flux.ai/rex-flux/2x5-pin-shrouded-header~tg.md) - Manufacturer Name: Würth Elektronik - Datasheet URL: https://www.we-online.com/catalog/datasheet/61201021621.pdf - Role: Connector - Part Type: Connector - Manufacturer Part Number: 61201021621 - Role Details: JTAG/SWD header **Pins:** - P1 [pin 1] - P10 [pin 10] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] - P5 [pin 5] - P6 [pin 6] - P7 [pin 8] - P7 [pin 7] - P9 [pin 9] ### JTAG — [2x5 Pin Shrouded Header](https://www.flux.ai/rex-flux/2x5-pin-shrouded-header~tg.md) - Part Type: Connector - Manufacturer Part Number: 61201021621 - Datasheet URL: https://www.we-online.com/catalog/datasheet/61201021621.pdf - Manufacturer Name: Würth Elektronik - Role Details: JTAG/SWD 2×5 header - Role: Connector **Pins:** - P1 [pin 1] - P10 [pin 10] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] - P5 [pin 5] - P6 [pin 6] - P7 [pin 8] - P7 [pin 7] - P9 [pin 9] ### LED1 — [150080VS75000](https://www.flux.ai/jecstronic/150080vs75000~qx.md) - Manufacturer Part Number: 150080VS75000 - Manufacturer Name: Würth Elektronik - Role Details: Status indicator LEDs - License: https://creativecommons.org/licenses/by/4.0/ - Role: LED - Part Type: LED - Datasheet URL: https://www.we-online.com/katalog/datasheet/150080VS75000.pdf **Pins:** - A [pin 2] - K [pin 1] ### U1 — [ARDUINO_NANO](https://www.flux.ai/jecstronic/arduinonano~2x.md) - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: ARDUINO_NANO - Datasheet URL: https://www.snapeda.com/parts/Arduino%20Nano/Arduino/datasheet/ - Role: Microcontroller - Part Type: Integrated Circuit - Role Details: Main MCU, Arduino Nano compatible footprint with on-module USB - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - +5V [pin 27] - 3V3 [pin 17] - A0 [pin 19] - A1 [pin 20] - A2 [pin 21] - A3 [pin 22] - A4 [pin 23] - A5 [pin 24] - A6 [pin 25] - A7 [pin 26] - AREF [pin 18] - COM/GND [pin 4] - COM/GND [pin 29] - D0/RX [pin 2] - D1/TX [pin 1] - D10 [pin 13] - D11/MOSI [pin 14] - D12/MISO [pin 15] - D13/SCK [pin 16] - D2 [pin 5] - D3 [pin 6] - D4 [pin 7] - D5 [pin 8] - D6 [pin 9] - D7 [pin 10] - D8 [pin 11] - D9 [pin 12] - RESET [pin 3] - RESET [pin 28] - VIN [pin 30] ### U2 — [SIM7600E-H](https://www.flux.ai/adrian95/sim7600e-h~8ui.md) - Role Details: Cellular module SIM7600E-H - Role: RF Transceiver - Part Type: Module - Datasheet URL: https://www.snapeda.com/parts/SIM7600E-H/Simcom/datasheet/ - Manufacturer Name: SIMCom Wireless Solutions Limited - Manufacturer Part Number: SIM7600E-H - License: https://creativecommons.org/licenses/by/4.0/ - Antenna Keepout Zone: circle centered at (15.1mm, 10.5mm), diameter 20mm, layer Keepout **Pins:** - ADC1 [pin 47] - ADC2 [pin 46] - AUX_ANT [pin 59] - BOOT_CFG0 [pin 85] - COEX1 [pin 83] - COEX2 [pin 84] - COEX3 [pin 86] - CTS [pin 67] - DCD [pin 70] - DTR [pin 72] - FLIGHTMODE [pin 54] - GND [pin 2] - GND [pin 5] - GND [pin 81] - GND [pin 37] - GND [pin 77] - GND [pin 43] - GND [pin 10] - GND [pin 58] - GND [pin 41] - GND [pin 57] - GND [pin 65] - GND [pin 14] - GND [pin 80] - GND [pin 60] - GND [pin 1] - GND [pin 78] - GND [pin 61] - GND [pin 40] - GND [pin 64] - GNSS_ANT [pin 79] - GPIO3 [pin 33] - GPIO41 [pin 52] - GPIO43 [pin 50] - GPIO6 [pin 34] - GPIO77 [pin 87] - HSIC_DATA [pin 36] - HSIC_STROBE [pin 35] - ISINK [pin 45] - MAIN_ANT [pin 82] - NETLIGHT [pin 51] - PCM_CLK [pin 76] - PCM_IN [pin 74] - PCM_OUT [pin 73] - PCM_SYNC [pin 75] - PWRKEY [pin 3] - RESET [pin 4] - RI [pin 69] - RTS [pin 66] - RXD [pin 68] - SCL [pin 55] - SD_CLK [pin 26] - SD_CMD [pin 21] - SD_DATA0 [pin 22] - SD_DATA1 [pin 23] - SD_DATA2 [pin 24] - SD_DATA3 [pin 25] - SD_DET [pin 48] - SDA [pin 56] - SDIO_CLK [pin 32] - SDIO_CMD [pin 29] - SDIO_DATA0 [pin 30] - SDIO_DATA1 [pin 27] - SDIO_DATA2 [pin 28] - SDIO_DATA3 [pin 31] - SPI_CLK [pin 6] - SPI_CS [pin 9] - SPI_MISO [pin 7] - SPI_MOSI [pin 8] - STATUS [pin 49] - TXD [pin 71] - USB_DN [pin 12] - USB_DP [pin 13] - USB_ID [pin 16] - USB_VBUS [pin 11] - USIM_CLK [pin 19] - USIM_DATA [pin 17] - USIM_DET [pin 53] - USIM_RST [pin 18] - USIM_VDD [pin 20] - VBAT [pin 38] - VBAT [pin 62] - VBAT [pin 63] - VBAT [pin 39] - VDD_1V8 [pin 15] - VDD_AUX [pin 44] ### U3 — [MPU-6000](https://www.flux.ai/vasy_skral/mpu-6000~w5s.md) - Datasheet URL: https://invensense.tdk.com/wp-content/uploads/2015/02/MPU-6000-Datasheet1.pdf - Part Type: Integrated Circuit - Manufacturer Part Number: MPU-6000 - Manufacturer Name: TDK InvenSense - Role: Sensor - Role Details: Inertial Measurement Unit (IMU) for crash detection, I2C interface **Pins:** - ~CS [pin 8] - AD0/MISO [pin 9] - AUX_SCL [pin 7] - AUX_SDA [pin 6] - CLKIN [pin 1] - CPOUT [pin 20] - FSYNC [pin 11] - GND [pin 18] - INT [pin 12] - REGOUT [pin 10] - SCL/SCLK [pin 23] - SDA/MOSI [pin 24] - VDD [pin 13] ### U4 — [LM393DR2G](https://www.flux.ai/adrian95/lm393dr2g~98s.md) - Role Details: Comparator for piezo sensor front-end threshold detection - License: https://creativecommons.org/licenses/by/4.0/ - Role: Operational Amplifier (OP-AMP) - Manufacturer Name: onsemi - Manufacturer Part Number: LM393DR2G - Part Type: Integrated Circuit - Datasheet URL: https://www.onsemi.com/pdf/datasheet/lm393-d.pdf **Pins:** - GND [pin 4] - INPUTSA_1 [pin 2] - INPUTSA_2 [pin 3] - INPUTSB_1 [pin 5] - INPUTSB_2 [pin 6] - OUTPUTA [pin 1] - OUTPUTB [pin 7] - VCC [pin 8] ### U5 — [TPS62823DLC](https://www.flux.ai/kicad-part-library/tps62823dlc~3o.md) - Datasheet URL: http://www.ti.com/lit/ds/symlink/tps62823.pdf - Role Details: 5 V buck converter rated for 2–3 A peak currents - Role: Power Management - Manufacturer Part Number: TPS62823DLC - Package or Case Code: Texas_VSON-HR-8_1.5x2mm_P0.5mm - Manufacturer Name: Texas Instruments Inc. **Pins:** - AGND [pin 3] - EN [pin 1] - FB [pin 2] - NC [pin 4] - PG [pin 8] - PGND [pin 5] - SW [pin 6] - VIN [pin 7] ### U6 — [MIC5504-3.3YM5](https://www.flux.ai/kicad-part-library/mic5504-3p3ym5~ud0.md) - Role Details: 3.3 V LDO regulator for MCU and peripherals - Package or Case Code: SOT-23-5 - Datasheet URL: http://ww1.microchip.com/downloads/en/DeviceDoc/MIC550X.pdf - Role: Power Management - Manufacturer Part Number: MIC5504-3.3YM5 - Manufacturer Name: Microchip Technology Inc. **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] ### U7 — [MPQ5073GG-AEC1-P](https://www.flux.ai/monolithicpower/mpq5073gg-aec1-p~ej.md) - Product Info Url: https://www.monolithicpower.com/en/catalog/product/view/id/540?utm_source=ultralibrarian&utm_medium=component_search&utm_campaign=listing - Role: Switch - Product Image Url: https://www.monolithicpower.com/pub/media/catalog/product/M/P/MPQ5073-AEC1_540_1.jpg - Manufacturer Part Number: MPQ5073GG-AEC1-P - Role Details: Automotive-grade load-switch MOSFET for switchable 3.8–4.0 V rail - Manufacturer Name: Monolithic Power Systems - Datasheet URL: https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MPQ5073-AEC1 - Package or Case Code: QFN-2X2_MPQ5073_MNP **Pins:** - EN [pin 1] - GND [pin 2] - ILIM [pin 4] - NC [pin 10] - NC [pin 7] - NC [pin 8] - PG [pin 12] - SS [pin 5] - VCC [pin 3] - VIN [pin 13] - VIN [pin 6] - VIN [pin 11] - VOUT [pin 9] ### U8 — [ADXL345TCCZ-EP](https://www.flux.ai/lcsc/adxl345tccz-ep~08q3.md) - JLCPCB Part Class: Extended Part - Role: Sensor - Manufacturer Part Number: ADXL345TCCZ-EP - Package or Case Code: LGA-14_L5.0-W3.0-P0.80-TL - Role Details: Optional accelerometer for crash detection, selectable - Manufacturer Name: ADI(亚德诺) - LCSC Part Number: C579458 **Pins:** - ~{CS} [pin 7] - GND [pin 5] - GND [pin 4] - GND [pin 2] - INT1 [pin 8] - INT2 [pin 9] - NC [pin 10] - RESERVED [pin 11] - RESERVED [pin 3] - SCL/SCLK [pin 14] - SDA/SDI/SDIO [pin 13] - SDO/ALTADDRESS [pin 12] - VDD_I/O [pin 1] - VS [pin 6] ### U9 — [ADXL375BCCZ](https://www.flux.ai/lcsc/adxl375bccz~xc1z.md) - Role: Sensor - Manufacturer Name: ADI(亚德诺) - JLCPCB Part Class: Extended Part - LCSC Part Number: C579466 - Manufacturer Part Number: ADXL375BCCZ - Role Details: Optional high-g accelerometer for crash detection, selectable - Package or Case Code: LGA-14_L5.0-W3.0-P0.80-BL-1 **Pins:** - ~{CS} [pin 7] - GND [pin 2] - GND [pin 4] - GND [pin 5] - INT1 [pin 8] - INT2 [pin 9] - NC [pin 10] - RESERVED [pin 3] - RESERVED [pin 11] - SCL/SCLK [pin 14] - SDA/SDI/SDIO [pin 13] - SDO/ALTADDRESS [pin 12] - VDDI/O [pin 1] - VS [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/aerovhyn/rubber-red-r2-d2~wj](https://www.flux.ai/aerovhyn/rubber-red-r2-d2~wj).* --- *Generated from [https://www.flux.ai/aerovhyn/rubber-red-r2-d2~wj](https://www.flux.ai/aerovhyn/rubber-red-r2-d2~wj)*