# ESP32-S3 Touch Display Dev Board ## Description ESP32-S3 touch display development board standardized on a portrait ILI9341 TFT by default, preserving USB-C power, CP2102N USB-UART, I2C touch, PCM5102A audio, microSD, and expansion while assigning KEY1-KEY5 to BOOT, RESET, USER1, USER2, and USER3. The next design pass is driven by a portrait-oriented board resize and user-facing edge placement of the display area, touch interface, controls, and primary connector access. ## Project Details - **Owner:** orestas1500 - **Created:** 4/9/2026 - **Last Updated:** 4/14/2026 - **Visibility:** Public - **USB Interface:** USB-C + USB-UART - **Display Size:** 7+ - **Primary Input Voltage:** 5V - **Logic Rail:** 3.3V - **Display Interface:** RGB parallel + I2C touch - **MCU Family:** ESP32-S3 - **Expansion:** I2C, SPI, GPIO, Audio, microSD ## Key Components ### D1 — [ESD321DPYR](https://www.flux.ai/corvus96/esd321dpyr~2s.md) - Package: 0402 - Manufacturer Part Number: ESD321DPYR - Role Details: Protect USB 2.0 data lines from ESD events - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/esd321.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1690491326127&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Fesd321 - Role: ESD Protection **Pins:** - GND [pin 2] - IO [pin 1] ### D2 — [ESD321DPYR](https://www.flux.ai/corvus96/esd321dpyr~2s.md) - Package: 0402 - Manufacturer Part Number: ESD321DPYR - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/esd321.pdf?HQS=dis-dk-null-digikeymode-dsf-pf-null-wwe&ts=1690491326127&ref_url=https%253A%252F%252Fwww.ti.com%252Fgeneral%252Fdocs%252Fsuppproductinfo.tsp%253FdistId%253D10%2526gotoUrl%253Dhttps%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Fesd321 - Role Details: Protect USB 2.0 data lines from ESD events - Role: ESD Protection **Pins:** - GND [pin 2] - IO [pin 1] ### D3 — [SP0505BAJT](https://www.flux.ai/kicad-part-library/sp0505bajt~3es.md) - Package: SC-70-6 - Manufacturer Name: Texas Instruments Inc. - Datasheet URL: http://www.littelfuse.com//media/files/littelfuse/technical%20resources/documents/data%20sheets/sp05xxba.pdf - Role Details: Clamp 5 V input surges on USB-C VBUS - Manufacturer Part Number: SP0505BAJT - Role: TVS Protection - Package or Case Code: SOT-363_SC-70-6 **Pins:** - A [pin 2] - K [pin 3] - K [pin 4] - K [pin 6] - K [pin 1] - K [pin 5] ### J1 — [USB4105-GF-A](https://www.flux.ai/adrian95/usb4105-gf-a~im9.md) - Manufacturer Name: GCT - Role: USB-C Connector - Package: USB-C Receptacle - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: USB 2.0 device and 5 V sink input with CC pins - Part Type: USB C - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/5492/USB4105.pdf - Manufacturer Name: GCT - 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 — [FH52-40S-0.5SH(99)](https://www.flux.ai/adrian95/fh52-40s-0p5sh99~j7e.md) - Package: 40-pin 0.5mm FFC - Manufacturer Part Number: FH52-40S-0.5SH(99) - Implementation Details: Only pin 40 is currently assigned as LCD_BL_PWR. All other display interface, power, and control pins remain intentionally unresolved pending the exact 7-inch panel/module pinout and datasheet. - Package or Case Code: FH5240S05SH99 - Datasheet URL: https://www.hirose.com/en/product/document?clcode=CL0580-3303-8-99&productname=FH52-50S-0.5SH(99)&series=FH52&documenttype=Catalog&lang=en&documentid=en_FH52_CAT - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Hirose - Role: Display Connector - Part Type: Connector - Role Details: Repurposed 40-pin FFC as mixed UI/display connector. Pins 33-35 carry ILI9341 SPI, pin 32 is D/C, pin 31 is reset, pin 39 is backlight enable, pin 38 is backlight switch node, pin 40 is LCD_BL_PWR, pins 28-30 and 25-29 carry optional shared touch/control signals, pins 1-2 carry audio outputs. **Pins:** - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 13 [pin 13] - 14 [pin 14] - 15 [pin 15] - 16 [pin 16] - 17 [pin 17] - 18 [pin 18] - 19 [pin 19] - 2 [pin 2] - 20 [pin 20] - 21 [pin 21] - 22 [pin 22] - 23 [pin 23] - 24 [pin 24] - 25 [pin 25] - 26 [pin 26] - 27 [pin 27] - 28 [pin 28] - 29 [pin 29] - 3 [pin 3] - 30 [pin 30] - 31 [pin 31] - 32 [pin 32] - 33 [pin 33] - 34 [pin 34] - 35 [pin 35] - 36 [pin 36] - 37 [pin 37] - 38 [pin 38] - 39 [pin 39] - 4 [pin 4] - 40 [pin 40] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] - MP1 [pin MP1] - MP2 [pin MP2] ### J3 — [59453-062110ECHLF](https://www.flux.ai/jecstronic/59453-062110echlf~o50.md) - Manufacturer Part Number: 59453-062110ECHLF - Datasheet URL: https://cdn.amphenol-cs.com/media/wysiwyg/files/drawing/59453-0_2110echlf.pdf - Part Type: Connector - Implementation Details: Touch connector mapping assumed and currently used: pin1 GND, pin2 TOUCH_INT, pin3 TOUCH_RST, pin4 I2C_SDA, pin5 I2C_SCL, pin6 3V3. Verify against exact panel/touch module documentation when available. - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Amphenol ICC (FCI) - Package: 6-pin 0.5mm FFC - Role Details: I2C capacitive touch panel connector with interrupt and reset - Role: Touch Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### J4 — [MEM2085](https://www.flux.ai/digitalninjae/mem2085~n6.md) - Part Type: SD Card - Role: Storage Connector - Datasheet URL: https://gct.co/files/drawings/mem2085.pdf - Role Details: SPI microSD card slot for assets, logs, and media - Package: microSD Socket - Manufacturer Name: GCT - Manufacturer Part Number: MEM2085-00-115-00-A **Pins:** - CD - GND 1 [pin G1] - GND 10 [pin G10] - GND 2 [pin G2] - GND 3 [pin G3] - GND 4 [pin G4] - GND 5 [pin G5] - GND 6 [pin G6] - GND 7 [pin G7] - GND 8 [pin G8] - GND 9 [pin G9] - P1 [pin DAT2] - P2 [pin CD/DAT3] - P3 [pin CMD] - P4 [pin VDD] - P5 [pin CLK] - P6 [pin VSS] - P7 [pin DAT0] - P8 [pin DAT1] ### KEY1 — [SKQGABE010](https://www.flux.ai/lcsc/skqgabe010~a4ff.md) - LCSC Part Number: C115351 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: SKQGABE010 - Package or Case Code: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1811051111_ALPSALPINE-SKQGABE010_C115351.pdf - Package: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Part Type: Tactile Switches - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_ALPS_SKQGABE010_5-2-5-2-1-5-1-57N_C115351.html - Role Details: Momentary pushbutton from ESP_BOOT to GND for manual flash mode entry - Role: Boot Button - Manufacturer Name: ALPSALPINE(阿尔卑斯阿尔派) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### KEY2 — [SKQGABE010](https://www.flux.ai/lcsc/skqgabe010~a4ff.md) - Part Type: Tactile Switches - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_ALPS_SKQGABE010_5-2-5-2-1-5-1-57N_C115351.html - Package: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Role: Reset Button - Manufacturer Name: ALPSALPINE(阿尔卑斯阿尔派) - LCSC Part Number: C115351 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: SKQGABE010 - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1811051111_ALPSALPINE-SKQGABE010_C115351.pdf - Package or Case Code: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Role Details: Momentary pushbutton from ESP_EN to GND for manual reset **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### KEY3 — [SKQGABE010](https://www.flux.ai/lcsc/skqgabe010~a4ff.md) - Package: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_ALPS_SKQGABE010_5-2-5-2-1-5-1-57N_C115351.html - Part Type: Tactile Switches - Manufacturer Name: ALPSALPINE(阿尔卑斯阿尔派) - Manufacturer Part Number: SKQGABE010 - LCSC Part Number: C115351 - JLCPCB Part Class: Extended Part - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1811051111_ALPSALPINE-SKQGABE010_C115351.pdf - Package or Case Code: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Role: User Button - Role Details: Momentary navigation button, active low, assigned to a spare GPIO **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### KEY4 — [SKQGABE010](https://www.flux.ai/lcsc/skqgabe010~a4ff.md) - Part Type: Tactile Switches - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_ALPS_SKQGABE010_5-2-5-2-1-5-1-57N_C115351.html - Role Details: Momentary navigation button, active low, assigned to a spare GPIO - Package: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Role: User Button - Manufacturer Name: ALPSALPINE(阿尔卑斯阿尔派) - LCSC Part Number: C115351 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: SKQGABE010 - Package or Case Code: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1811051111_ALPSALPINE-SKQGABE010_C115351.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### KEY5 — [SKQGABE010](https://www.flux.ai/lcsc/skqgabe010~a4ff.md) - Product Info Url: https://lcsc.com/product-detail/Tactile-Switches_ALPS_SKQGABE010_5-2-5-2-1-5-1-57N_C115351.html - Part Type: Tactile Switches - Manufacturer Name: ALPSALPINE(阿尔卑斯阿尔派) - Package: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 - Manufacturer Part Number: SKQGABE010 - Role: User Button - Role Details: Momentary selection button, active low, assigned to a spare GPIO - JLCPCB Part Class: Extended Part - LCSC Part Number: C115351 - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1811051111_ALPSALPINE-SKQGABE010_C115351.pdf - Package or Case Code: KEY-SMD_4P-L5.2-W5.2-P3.70-LS6.4 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n16r8~fs1.md) - Package: Module - Part Type: Module - Role: Main MCU - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Manufacturer Name: Espressif Systems - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_wroom_1_wroom_1u_datasheet_en-2930317.pdf - Role Details: ESP32-S3 module driving SPI ILI9341 display, shared touch I2C, microSD SPI subset, PCM5102A audio, USB-UART programming, and UI buttons. **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] ### U2 — [AP63203WU-7](https://www.flux.ai/adrian95/ap63203wu-7~o8a.md) - Manufacturer Part Number: AP63203WU-7 - Role: Buck Regulator - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Package: SOT-23-6 - Manufacturer Name: Diodes Incorporated - Role Details: Primary 3.3 V regulator for ESP32-S3 and digital peripherals - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP63200-AP63201-AP63203-AP63205.pdf **Pins:** - BST [pin 6] - EN [pin 2] - FB [pin 1] - GND [pin 4] - SW [pin 5] - VIN [pin 3] ### U4 — [PCM5102APWR](https://www.flux.ai/adrian95/pcm5102apwr~3gb.md) - Manufacturer Part Number: PCM5102APWR - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Package: TSSOP-20 - Role: Audio DAC - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: I2S stereo DAC for external amplified speakers or line output - Datasheet URL: https://www.ti.com/lit/ds/symlink/pcm5102a.pdf **Pins:** - AGND [pin 9] - AVDD [pin 8] - BCK [pin 13] - CAPM [pin 4] - CAPP [pin 2] - CPGND [pin 3] - CPVDD [pin 1] - DEMP [pin 10] - DGND [pin 19] - DIN [pin 14] - DVDD [pin 20] - FLT [pin 11] - FMT [pin 16] - LDOO [pin 18] - LRCK [pin 15] - OUTL [pin 6] - OUTR [pin 7] - SCK [pin 12] - VNEG [pin 5] - XSMT [pin 17] ### U5 — [TPS61165DBV](https://www.flux.ai/kicad-part-library/tps61165dbv~lwi.md) - Manufacturer Part Number: TPS61165DBV - Manufacturer Name: Texas Instruments Inc. - Package: SOT-23-6 - Role Details: PWM-dimmable constant-current boost converter for LCD backlight - Role: Backlight Driver - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps61165.pdf - Package or Case Code: SOT-23-6 **Pins:** - COMP [pin 5] - CTRL [pin 2] - FB [pin 6] - GND [pin 4] - SW [pin 3] - VIN [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/orestas1500/esp32-s3-touch-display-dev-board~zo](https://www.flux.ai/orestas1500/esp32-s3-touch-display-dev-board~zo).* --- *Generated from [https://www.flux.ai/orestas1500/esp32-s3-touch-display-dev-board~zo](https://www.flux.ai/orestas1500/esp32-s3-touch-display-dev-board~zo)*