# Slow Crimson Tricorder ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** eddiehajjar - **Created:** 2/8/2026 - **Last Updated:** 2/12/2026 - **Visibility:** Public - **System Architecture:** flowchart TD Coil[Inductive coil pads\nCOIL_P COIL_N] --> Rect[Rectifier PMU placeholder\nVRAW] Rect --> LDO[LDO Reg placeholder\nVDD 1.8-3.3V] LDO --> MCU[MCU QFN placeholder\nSWD I2C SPI ADC GPIO] MCU --> Sensor[SENSOR_IO pads\nVDD GND I2C ADC GPIO1] MCU --> Disp[DISPLAY_IO pads\nVDD GND SPI GPIO2 GPIO3] MCU --> Test[Test pads\nVDD GND SWDIO SWCLK] MCU --> Gnd[System ground] Rect --> Gnd LDO --> Gnd - **Forks:** 1 ## Key Components ### D1 — [5017](https://www.flux.ai/lcsc/5017.md) - JLCPCB Part Class: Extended Part - Role: Test Pad - Package or Case Code: TEST-SMD_L2.7-W1.0 - Manufacturer Part Number: 5017 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Package: Custom_Pad_0.30x0.60_P0.50 - Part Type: Test Points/Test Rings - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 **Pins:** - 1 [pin 1] ### D2 — [5017](https://www.flux.ai/lcsc/5017.md) - Manufacturer Name: Keystone - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Part Number: 5017 - Package or Case Code: TEST-SMD_L2.7-W1.0 - JLCPCB Part Class: Extended Part - LCSC Part Number: C238130 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - Role: Test Pad - Package: Custom_Pad_0.30x0.60_P0.50 - Part Type: Test Points/Test Rings **Pins:** - 1 [pin 1] ### D3 — [5017](https://www.flux.ai/lcsc/5017.md) - Part Type: Test Points/Test Rings - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - JLCPCB Part Class: Extended Part - Role: Test Pad - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Package: Custom_Pad_0.30x0.60_P0.50 - Package or Case Code: TEST-SMD_L2.7-W1.0 - Manufacturer Part Number: 5017 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html **Pins:** - 1 [pin 1] ### D4 — [5017](https://www.flux.ai/lcsc/5017.md) - Part Type: Test Points/Test Rings - Role: Test Pad - LCSC Part Number: C238130 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Name: Keystone - Manufacturer Part Number: 5017 - Package or Case Code: TEST-SMD_L2.7-W1.0 - Package: Custom_Pad_0.30x0.60_P0.50 **Pins:** - 1 [pin 1] ### D5 — [5017](https://www.flux.ai/lcsc/5017.md) - Manufacturer Part Number: 5017 - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Name: Keystone - Package: Custom_Pad_0.30x0.60_P0.50 - Package or Case Code: TEST-SMD_L2.7-W1.0 - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Role: Test Pad - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - Part Type: Test Points/Test Rings **Pins:** - 1 [pin 1] ### D6 — [5017](https://www.flux.ai/lcsc/5017.md) - Part Type: Test Points/Test Rings - LCSC Part Number: C238130 - Package: Custom_Pad_0.30x0.60_P0.50 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - Role: Test Pad - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - JLCPCB Part Class: Extended Part - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Part Number: 5017 - Package or Case Code: TEST-SMD_L2.7-W1.0 **Pins:** - 1 [pin 1] ### J1 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p.md) - Manufacturer Part Number: XY301V-A-5.0-2P - Manufacturer Name: Ningbo Xinlaiya Elec. **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### S1 — [5017](https://www.flux.ai/lcsc/5017.md) - Package: Custom_Pad_0.30x0.60_P0.50 - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Name: Keystone - Manufacturer Part Number: 5017 - Package or Case Code: TEST-SMD_L2.7-W1.0 - Role: Test Pad - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Part Type: Test Points/Test Rings - LCSC Part Number: C238130 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf **Pins:** - 1 [pin 1] ### S2 — [5017](https://www.flux.ai/lcsc/5017.md) - Role: Test Pad - Part Type: Test Points/Test Rings - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - JLCPCB Part Class: Extended Part - Package: Custom_Pad_0.30x0.60_P0.50 - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Manufacturer Part Number: 5017 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Package or Case Code: TEST-SMD_L2.7-W1.0 **Pins:** - 1 [pin 1] ### S3 — [5017](https://www.flux.ai/lcsc/5017.md) - Part Type: Test Points/Test Rings - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: 5017 - Package: Custom_Pad_0.30x0.60_P0.50 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Role: Test Pad - Package or Case Code: TEST-SMD_L2.7-W1.0 **Pins:** - 1 [pin 1] ### S4 — [5017](https://www.flux.ai/lcsc/5017.md) - JLCPCB Part Class: Extended Part - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Package or Case Code: TEST-SMD_L2.7-W1.0 - Manufacturer Part Number: 5017 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Part Type: Test Points/Test Rings - Role: Test Pad - Package: Custom_Pad_0.30x0.60_P0.50 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 **Pins:** - 1 [pin 1] ### S5 — [5017](https://www.flux.ai/lcsc/5017.md) - Part Type: Test Points/Test Rings - Package: Custom_Pad_0.30x0.60_P0.50 - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - LCSC Part Number: C238130 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - Role: Test Pad - JLCPCB Part Class: Extended Part - Package or Case Code: TEST-SMD_L2.7-W1.0 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Part Number: 5017 **Pins:** - 1 [pin 1] ### S6 — [5017](https://www.flux.ai/lcsc/5017.md) - Package or Case Code: TEST-SMD_L2.7-W1.0 - Manufacturer Part Number: 5017 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - Role: Test Pad - Package: Custom_Pad_0.30x0.60_P0.50 - Part Type: Test Points/Test Rings **Pins:** - 1 [pin 1] ### TP1 — [5017](https://www.flux.ai/lcsc/5017.md) - Manufacturer Part Number: 5017 - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Name: Keystone - Package or Case Code: TEST-SMD_L2.7-W1.0 - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Role: Test Pad - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - Part Type: Test Points/Test Rings - Package: Custom_Pad_0.30x0.60_P0.50 **Pins:** - 1 [pin 1] ### TP2 — [5017](https://www.flux.ai/lcsc/5017.md) - Part Type: Test Points/Test Rings - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - JLCPCB Part Class: Extended Part - Role: Test Pad - Package: Custom_Pad_0.30x0.60_P0.50 - Package or Case Code: TEST-SMD_L2.7-W1.0 - Manufacturer Part Number: 5017 - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Name: Keystone **Pins:** - 1 [pin 1] ### TP3 — [5017](https://www.flux.ai/lcsc/5017.md) - Manufacturer Part Number: 5017 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Package or Case Code: TEST-SMD_L2.7-W1.0 - Role: Test Pad - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - LCSC Part Number: C238130 - Package: Custom_Pad_0.30x0.60_P0.50 - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access - Part Type: Test Points/Test Rings **Pins:** - 1 [pin 1] ### TP4 — [5017](https://www.flux.ai/lcsc/5017.md) - LCSC Part Number: C238130 - Role: Test Pad - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2401241010_Keystone-5017_C238130.pdf - Part Type: Test Points/Test Rings - Package or Case Code: TEST-SMD_L2.7-W1.0 - Package: Custom_Pad_0.30x0.60_P0.50 - Manufacturer Name: Keystone - Product Info Url: https://lcsc.com/product-detail/Test-Points-Test-Rings_Keystone_5017_Keystone-5017_C238130.html - Manufacturer Part Number: 5017 - JLCPCB Part Class: Extended Part - Role Details: Micro pad (0.30x0.60 mm, 0.50 mm pitch) used for SENSOR/DISPLAY interfaces and debug test access **Pins:** - 1 [pin 1] ### U1 — [STM32L432K_B-C_Ux](https://www.flux.ai/kicad-part-library/stm32l432kb-cux.md) - Manufacturer Name: STMicroelectronics NV - Package or Case Code: QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm - Manufacturer Part Number: STM32L432K_B-C_Ux - Role Details: QFN placeholder for MCU core; will use subset of pins: VDD,GND,SWDIO,SWCLK,RESET,I2C,SPI,ADC,GPIO1-4 - Datasheet URL: https://www.st.com/resource/en/datasheet/stm32l432kb.pdf - Role: MCU **Pins:** - NRST [pin 4] - PA0 [pin 6] - PA1 [pin 7] - PA10 [pin 20] - PA11 [pin 21] - PA12 [pin 22] - PA13 [pin 23] - PA14 [pin 24] - PA15 [pin 25] - PA2 [pin 8] - PA3 [pin 9] - PA4 [pin 10] - PA5 [pin 11] - PA6 [pin 12] - PA7 [pin 13] - PA8 [pin 18] - PA9 [pin 19] - PB0 [pin 14] - PB1 [pin 15] - PB3 [pin 26] - PB4 [pin 27] - PB5 [pin 28] - PB6 [pin 29] - PB7 [pin 30] - PC14 [pin 2] - PC15 [pin 3] - PH3 [pin 31] - VDD [pin 17] - VDD [pin 1] - VDDA [pin 5] - VSS [pin 32] - VSS [pin 16] - VSS [pin 33] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/eddiehajjar/slow-crimson-tricorder](https://www.flux.ai/eddiehajjar/slow-crimson-tricorder).* --- *Generated from [https://www.flux.ai/eddiehajjar/slow-crimson-tricorder](https://www.flux.ai/eddiehajjar/slow-crimson-tricorder)*