# Smart Pantry Shelf Master Tile ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** bcheatam - **Created:** 4/20/2026 - **Last Updated:** 4/21/2026 - **Visibility:** Public ## Key Components ### D1 — USBLC6-2SC6 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Protection - Package: SOT-23-6 - Manufacturer Name: STMicroelectronics - LCSC Part Number: C7519 - Datasheet URL: https://www.st.com/content/ccc/resource/technical/document/datasheet/06/1d/48/9c/6c/20/4a/b2/CD00050750.pdf/files/CD00050750.pdf/jcr:content/translations/en.CD00050750.pdf - Role Details: Protect VBUS, D+, and D- at the USB-C connector - Role: ESD Protection - Symbol Style: parametric-v1 - Manufacturer Part Number: USBLC6-2SC6 **Pins:** - GND [pin 2] - I/O1 [pin 6] - I/O1 [pin 1] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### D2 — 1N5819HW-7-F - Role Details: Schottky diode between VBUS and charger VDD - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1N5819HW-7-F - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds30217.pdf - Manufacturer Name: Diodes Incorporated - Part Type: Diode - Package: SOD-123 - Role: Power Path Diode **Pins:** - A [pin 2] - K [pin 1] ### J1 — USB4105-GF-A - Part Type: USB C - Package: USB-C receptacle - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: GCT - Manufacturer Name: GCT - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5492/USB4105.pdf - Role: USB Connector - Role Details: USB-C input for VBUS, CC1/CC2, and native USB D+/D- - Manufacturer Part Number: USB4105-GF-A **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin A1_B12] - GND__1 [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHELL_GND [pin SH1] - SHELL_GND__1 [pin SH2] - SHELL_GND__2 [pin SH3] - SHELL_GND__3 [pin SH4] - VBUS [pin A4_B9] - VBUS__1 [pin B4_A9] ### J2 — B2B-PH-K-S(LF)(SN) - Package: JST-PH-2 - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811151524_JST-Sales-America-B2B-PH-K-S-LF-SN_C131337.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Parallel Li-ion battery connector carrying VBAT+ and VBAT- - Role: Battery Connector - Part Type: Connector - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Manufacturer Name: JST Sales America **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J3 — 0530470610 - Role: Expansion Header - Role Details: 6-pin external interface header carrying 3V3, GND, SDA, SCL, IRQ_EXT, TILE_SEL; closest library substitute to 1.27mm pitch - Manufacturer Part Number: 0530470610 - Implementation Details: Specified 1.27mm 1x6 header was unavailable in the library, so a closest-pitch 1.25mm 1x6 connector was used as schematic substitute. - Manufacturer Name: Molex - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.molex.com/pdm_docs/sd/530470610_sd.pdf - Part Type: Connector - Package: 1x6 header **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] ### LED1 — WS2812B-2020 - Product Info Url: https://lcsc.com/product-detail/Light-Emitting-Diodes-LED_Worldsemi-WS2812B-2020_C965555.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2012110135_Worldsemi-WS2812B-2020_C965555.pdf - Role Details: Single WS2812B-2020 RGB status LED driven by ESP32 - Role: User LED - JLCPCB Part Class: Extended Part - Max Reverse Voltage: 5V - Manufacturer Name: worldsemi - LCSC Part Number: C965555 - Package: 2020 - Max Forward Current: 20mA - Forward Voltage: Red: 2.0V to 2.2V Green: 3.0V to 3.2V Blue: 3.0V to 3.2V - Package or Case Code: LED-SMD_4P-L2.0-W2.0-TL_WS2812B-2020 - Part Type: Light Emitting Diodes (LED) - Manufacturer Part Number: WS2812B-2020 **Pins:** - DI [pin 3] - DO [pin 1] - GND [pin 2] - VDD [pin 4] ### LED2 — LED 0603 (1608 Metric) - Role Details: Charge status indicator from MCP73831 STAT output - Role: Status LED - Package: LED - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### Q1 — DMP3098L-7 - Part Type: Transistor - Role: Load Share MOSFET - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Diodes Incorporated - Role Details: High-side PMOS between VBAT and VSYS for battery disconnect when USB state drives gate network - Package: SOT-23-3 - Manufacturer Part Number: DMP3098L-7 - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds31447.pdf **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q2 — MMBT3904LT1G - Manufacturer Part Number: MMBT3904LT1G - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/mmbt3904lt1-d.pdf - Package: SOT-23-3 - Role: Load Share Gate Driver - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: NPN transistor in VBUS-controlled gate pull-down network for battery load-share - Part Type: Transistor **Pins:** - B [pin 1] - C [pin 3] - E [pin 2] ### SW1 — PTS645SL43SMTR92 LFS - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Switch - Package: Switch - Manufacturer Part Number: SW1_1-2_3-4 - Role: Pushbutton - Manufacturer Name: C&K - Role Details: Momentary pushbutton to pull control signal to GND - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-c-k-tactile-pts645-series-datasheet?assetguid=d58fc8a8-f6e1-4527-ab68-27635e632e39 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### SW2 — PTS645SL43SMTR92 LFS - Package: Switch - Part Type: Switch - Role Details: Momentary pushbutton to pull control signal to GND - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: C&K - Datasheet URL: https://www.littelfuse.com/assetdocs/littelfuse-c-k-tactile-pts645-series-datasheet?assetguid=d58fc8a8-f6e1-4527-ab68-27635e632e39 - Role: Pushbutton - Manufacturer Part Number: SW1_1-2_3-4 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U1 — MCP73831T-2ACI/OT - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 500mA Li-ion charger from protected USB VBUS - Part Type: Integrated Circuit - Manufacturer Part Number: MCP73831T-2ACI/OT - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73831-Family-Data-Sheet-DS20001984H.pdf - Manufacturer Name: Microchip Technology - Package: SOT-23-5 - Role: Battery Charger **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VIN [pin 4] - VSS [pin 2] ### U2 — MAX17048G+T10 - Package: DFN-8 - Manufacturer Part Number: MAX17048G+T10 - Part Type: Battery Management ICs - Package or Case Code: DFN-8_L2.0-W2.0-P0.50-BL-EP - LCSC Part Number: C2682616 - Role: Fuel Gauge - Role Details: Monitors VBAT and reports charge state over I2C at address 0x36 - Manufacturer Name: ADI(亚德诺)/MAXIM(美信) - JLCPCB Part Class: Extended Part **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] ### U3 — ME6211C33M5G-N - Role Details: 3.3V regulator from VSYS to 3V3 used because AP2112K-3.3 exact part is unavailable in library - Package: SOT-23-5 - Manufacturer Name: MICRONE(Nanjing Micro One Elec) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811131510_MICRONE-Nanjing-Micro-One-Elec-ME6211C33M5G-N_C82942.pdf - Implementation Details: Specified AP2112K-3.3 was unavailable in the library, so a 3.3V 500mA SOT-23-5 LDO substitute was used to complete the schematic. - Manufacturer Part Number: AP2112K-3.3 substitute: ME6211C33M5G-N - Part Type: LDO - Role: LDO Regulator **Pins:** - CE - NC - VIN - VOUT - VSS ### U4 — ESP32-S3-WROOM-1-N8R2 - Datasheet URL: https://www.lcsc.com/datasheet/C2913204.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FgRaVVdXRFFZBFZfQlEIUFAAQVVXUAZeQAVWVAVTTlgxVlNRQ1RXXlZRT1BZUzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - LCSC Part Number: C2913204 - Part Type: WiFi Modules - Role: Main Controller - Manufacturer Part Number: ESP32-S3-WROOM-1-N8R2 - Package or Case Code: WIRELM-SMD_ESP32-S3-WROOM-1 - Package: ESP32-S3-WROOM-1 - Manufacturer Name: ESPRESSIF(乐鑫) - JLCPCB Part Class: Extended Part - Role Details: ESP32-S3 module handling USB, I2C peripherals, and expansion interface **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND [pin 43] - GND [pin 45] - GND [pin 46] - GND [pin 49] - GND [pin 42] - GND [pin 44] - GND [pin 1] - GND [pin 47] - GND [pin 48] - GND [pin 41] - GND [pin 40] - 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] ### U5 — MPR121QR2 - Part Type: Integrated Circuit - Role: Capacitive Sensor Controller - Datasheet URL: https://www.nxp.com/docs/en/data-sheet/MPR121.pdf - Package: QFN-20 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: NXP USA Inc. - Manufacturer Part Number: MPR121QR2 - Role Details: MPR121 capacitive touch controller at address 0x5A **Pins:** - *IRQ [pin 1] - ADDR [pin 4] - ELE0 [pin 8] - ELE1 [pin 9] - ELE10 [pin 18] - ELE11 [pin 19] - ELE2 [pin 10] - ELE3 [pin 11] - ELE4 [pin 12] - ELE5 [pin 13] - ELE6 [pin 14] - ELE7 [pin 15] - ELE8 [pin 16] - ELE9 [pin 17] - HTAB [pin HTAB] - REXT [pin 7] - SCL [pin 2] - SDA [pin 3] - VDD [pin 20] - VREG [pin 5] - VSS [pin 6] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/bcheatam/smart-pantry-shelf-master-tile~vv](https://www.flux.ai/bcheatam/smart-pantry-shelf-master-tile~vv).* --- *Generated from [https://www.flux.ai/bcheatam/smart-pantry-shelf-master-tile~vv](https://www.flux.ai/bcheatam/smart-pantry-shelf-master-tile~vv)*