# [Example] ESP32 Reference Design ## Description ESP32 Dual-Band RTK GNSS Reference Design with u-blox ZED-F9P ## Project Details - **Owner:** dmcleln - **Created:** 9/24/2021 - **Last Updated:** 9/24/2021 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Manufacturing Quantity Target:** 10 - **Software:** Arduino - **Power Requirements:** USB - **Operating Voltage:** 3.3V - **Part Type:** Portal - **Domain:** Telecommunications - **System Architecture:** flowchart TD ESP32["ESP32-WROOM-32D"] GNSS["u-blox ZED-F9P"] ANT["Antenna\nConnector"] ESP32 -->|3.3V| GNSS ESP32 -->|UART TX/RX| GNSS ESP32 -->|I2C SDA/SCL| GNSS ESP32 -->|1PPS| GNSS GNSS -->|ANT| ANT - **Connectivity:** WiFi - **Stars:** 1 ## Key Components ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3V3 — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### A0 — Label **Pins:** - P1 - P2 ### A0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A1 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A1 — Label **Pins:** - P1 - P2 ### A2 — Label **Pins:** - P1 - P2 ### A2 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A3 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A3 — Label **Pins:** - P1 - P2 ### A4 — Label **Pins:** - P1 - P2 ### A4 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A5 — Label **Pins:** - P1 - P2 ### A5 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A6 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A6 — Label **Pins:** - P1 - P2 ### A7 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### A7 — Label **Pins:** - P1 - P2 ### AIN0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### AIN0 — Label **Pins:** - P1 - P2 ### AIN1 — Label **Pins:** - P1 - P2 ### AIN1 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### AIN2 — Label **Pins:** - P1 - P2 ### AIN2 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### AIN3 — Label **Pins:** - P1 - P2 ### AIN3 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B0 — Label **Pins:** - P1 - P2 ### B0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B1 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B1 — Label **Pins:** - P1 - P2 ### B2 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B2 — Label **Pins:** - P1 - P2 ### B3 — Label **Pins:** - P1 - P2 ### B3 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B4 — Label **Pins:** - P1 - P2 ### B4 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B5 — Label **Pins:** - P1 - P2 ### B5 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B6 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B6 — Label **Pins:** - P1 - P2 ### B7 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### B7 — Label **Pins:** - P1 - P2 ### D1 — [Schottky Diode](https://www.flux.ai/lwcassid/schottky-diode~zf.md) - Saturation Current: 3.15e-7A - Emission Coefficient: 2.03 - Series Resistance: 2.8Ω - Breakdown Voltage: 70V **Pins:** - ANODE - CATHODE ### D2 — [ESD9B5.0ST5G](https://www.flux.ai/kicad-part-library/esd9b5p0st5g~zf3.md) - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: ESD9B5.0ST5G - Part Type: Diode SMD - Role: Protection - Datasheet URL: https://www.onsemi.com/pub/Collateral/ESD9B-D.PDF - Package or Case Code: D_SOD-923 - Role Details: ESD protection diode for antenna RF_IN line **Pins:** - A1 [pin 1] - A2 [pin 2] ### DTS — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_CLK — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_CMD — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_EN — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_EN — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_EN — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO0 — Label **Pins:** - P1 - P2 ### ESP_IO12 — Label **Pins:** - P1 - P2 ### ESP_IO12 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO13 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO13 — Label **Pins:** - P1 - P2 ### ESP_IO14 — Label **Pins:** - P1 - P2 ### ESP_IO14 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO15 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO15 — Label **Pins:** - P1 - P2 ### ESP_IO16 — Label **Pins:** - P1 - P2 ### ESP_IO16 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO17 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO17 — Label **Pins:** - P1 - P2 ### ESP_IO18 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO18 — Label **Pins:** - P1 - P2 ### ESP_IO19 — Label **Pins:** - P1 - P2 ### ESP_IO19 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO2 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO2 — Label **Pins:** - P1 - P2 ### ESP_IO2 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO23 — Label **Pins:** - P1 - P2 ### ESP_IO23 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO25 — Label **Pins:** - P1 - P2 ### ESP_IO25 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO26 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO26 — Label **Pins:** - P1 - P2 ### ESP_IO27 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO27 — Label **Pins:** - P1 - P2 ### ESP_IO32 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO32 — Label **Pins:** - P1 - P2 ### ESP_IO33 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO33 — Label **Pins:** - P1 - P2 ### ESP_IO34 — Label **Pins:** - P1 - P2 ### ESP_IO34 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO35 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO35 — Label **Pins:** - P1 - P2 ### ESP_IO36 — Label **Pins:** - P1 - P2 ### ESP_IO36 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO39 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO39 — Label **Pins:** - P1 - P2 ### ESP_IO4 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO4 — Label **Pins:** - P1 - P2 ### ESP_IO5 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO5 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_IO5 — Label **Pins:** - P1 - P2 ### ESP_RX — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_RX — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_SD0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_SD1 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_SD2 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_SD3 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_TX — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_TX — Label - Pin Type: Signal **Pins:** - P1 - P2 ### ESP_TX — Label - Pin Type: Signal **Pins:** - P1 - P2 ### J1 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J10 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J11 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J12 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J13 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J14 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J15 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J16 — [BS-11-B2CA001](https://www.flux.ai/lcsc/bs-11-b2ca001~x0nb.md) - JLCPCB Part Class: Extended Part - Package or Case Code: BAT-SMD_BS-11-B2CA001 - Part Type: Battery Connectors - Manufacturer Part Number: BS-11-B2CA001 - Role Details: Backup/RTC battery connector - Role: Connector - LCSC Part Number: C964800 - Manufacturer Name: MYOUNG(美阳) **Pins:** - 1 [pin 1] - 2 [pin 2] ### J17 — [U.FL-R-SMT-1(10)](https://www.flux.ai/jecstronic/upfl-r-smt-110~du.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Name: Hirose Electric Co Ltd - Manufacturer Part Number: U.FL-R-SMT-1(10) - Role: Connector - Role Details: Antenna interface for GNSS module - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Hirose%20PDFs/EDC3-302540-10.tif.pdf **Pins:** - Center_Contact [pin 2] - Outer_Contact [pin 1] - Outer_Contact [pin 3] ### J18 — [Connector 01x04 Horizontal](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Role: Connector - Part Type: Connector - Role Details: RTCM corrections serial interface **Pins:** - PIN_1 [pin 1] - PIN_2 [pin 2] - PIN_3 [pin 3] - PIN_4 [pin 4] ### J2 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J3 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J4 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J5 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J6 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J7 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J8 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### J9 — [Connector 01x04](https://www.flux.ai/jharwinbarrozo/connector-01x04-horizontal~h0.md) - Part Type: Connector **Pins:** - Pin_1 - Pin_2 - Pin_3 - Pin_4 ### PWM0 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM0 — Label **Pins:** - P1 - P2 ### PWM1 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM1 — Label **Pins:** - P1 - P2 ### PWM10 — Label **Pins:** - P1 - P2 ### PWM10 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM11 — Label **Pins:** - P1 - P2 ### PWM11 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM12 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM12 — Label **Pins:** - P1 - P2 ### PWM13 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM13 — Label **Pins:** - P1 - P2 ### PWM14 — Label **Pins:** - P1 - P2 ### PWM14 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM15 — Label **Pins:** - P1 - P2 ### PWM15 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM2 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM2 — Label **Pins:** - P1 - P2 ### PWM3 — Label **Pins:** - P1 - P2 ### PWM3 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM4 — Label **Pins:** - P1 - P2 ### PWM4 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM5 — Label **Pins:** - P1 - P2 ### PWM5 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM6 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM6 — Label **Pins:** - P1 - P2 ### PWM7 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM7 — Label **Pins:** - P1 - P2 ### PWM8 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM8 — Label **Pins:** - P1 - P2 ### PWM9 — Label - Pin Type: Signal **Pins:** - P1 - P2 ### PWM9 — Label **Pins:** - P1 - P2 ### RST — Label - Pin Type: Signal **Pins:** - P1 - P2 ### S1 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button~eqk.md) **Pins:** - P1 - P2 ### S2 — [Push Button](https://www.flux.ai/jharwinbarrozo/push-button~eqk.md) **Pins:** - P1 - P2 ### SCL — Label - Pin Type: Signal **Pins:** - P1 - P2 ### SCL — Label - Pin Type: Signal **Pins:** - P1 - P2 ### SCL — Label **Pins:** - P1 - P2 ### SCL — Label - Pin Type: Signal **Pins:** - P1 - P2 ### SDA — Label - Pin Type: Signal **Pins:** - P1 - P2 ### SDA — Label - Pin Type: Signal **Pins:** - P1 - P2 ### SDA — Label - Pin Type: Signal **Pins:** - P1 - P2 ### SDA — Label - Pin Type: Signal **Pins:** - P1 - P2 ### TP1 — [Test Point](https://www.flux.ai/ramprakashvishnoi8/test-point~w1.md) **Pins:** - P1 ### TP2 — [Test Point](https://www.flux.ai/ramprakashvishnoi8/test-point~w1.md) **Pins:** - P1 ### TP3 — [Test Point](https://www.flux.ai/ramprakashvishnoi8/test-point~w1.md) **Pins:** - P1 ### TP4 — [Test Point](https://www.flux.ai/ramprakashvishnoi8/test-point~w1.md) **Pins:** - P1 ### TP5 — [Test Point](https://www.flux.ai/ramprakashvishnoi8/test-point~w1.md) **Pins:** - P1 ### TP6 — [Test Point](https://www.flux.ai/ramprakashvishnoi8/test-point~w1.md) **Pins:** - P1 ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Manufacturer Part Number: ESP32-WROOM-32D - Package or Case Code: ESP32-WROOM-32 - Manufacturer Name: Espressif Systems - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - Manufacturer Part Number: ESP32-WROOM-32 - Part Type: Microcontroller **Pins:** - EN - GND - GND - GND - GND - IO0 - IO12 - IO13 - IO14 - IO15 - IO16 - IO17 - IO18 - IO19 - IO2 - IO21 - IO22 - IO23 - IO25 - IO26 - IO27 - IO32 - IO33 - IO34 - IO35 - IO4 - IO5 - NC - RXD0/IO3 - SCK/CLK - SCS/CMD - SDI/SD1 - SDO/SD0 - SENSOR_VN - SENSOR_VP - SHD/SD2 - SWP/SD3 - TXD0/IO1 - VDD ### U2 — [MCP23017-E/SO](https://www.flux.ai/vasy_skral/mcp23017-eso~ima.md) - Part Type: Integrated Circuit - Manufacturer Part Number: MCP23017-E/SO - Package or Case Code: 28-SOIC - Manufacturer Name: Microchip Technology - Datasheet URL: http://www.microchip.com/mymicrochip/filehandler.aspx?ddocname=en023709 **Pins:** - ~RESET - A0 - A1 - A2 - GPA0 - GPA1 - GPA2 - GPA3 - GPA4 - GPA5 - GPA6 - GPA7 - GPB0 - GPB1 - GPB2 - GPB3 - GPB4 - GPB5 - GPB6 - GPB7 - INTA - INTB - SCK - SDA - VDD - VSS ### U3 — [TPS564201DDCR](https://www.flux.ai/vasy_skral/tps564201ddcr~flq.md) - Part Type: Integrated Circuit - Datasheet URL: http://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=http%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftps564201 - Manufacturer Name: Texas Instruments - Package or Case Code: TSOT-23-6 - Manufacturer Part Number: TPS564201DDCR **Pins:** - EN - GND - SW - VBST - VFB - VIN ### U4 — [USB4110-GF-A_REVB](https://www.flux.ai/vasy_skral/usb4110-gf-arevb~o6e.md) - Manufacturer Part Number: USB4110-GF-A - Package or Case Code: Surface Mount, Right Angle - Manufacturer Name: GCT - Datasheet URL: https://gct.co/files/drawings/usb4110.pdf - Part Type: Connector **Pins:** - CC1 - CC2 - DN1 - DN2 - DP1 - DP2 - GND - GND - GND - GND - GND - GND - SBU1 - SBU2 - VBUS - VBUS ### U5 — [ADS1115IDGSR](https://www.flux.ai/vasy_skral/ads1115idgsr~fc2.md) - Manufacturer Part Number: ADS1115IDGSR - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fads1113 - Package or Case Code: 10-VSSOP - Part Type: Integrated Circuit **Pins:** - ADDR - AIN0 - AIN1 - AIN2 - AIN3 - ALERT/RDY - GND - SCL - SDA - VDD ### U6 — [CP2102N-Axx-xQFN28](https://www.flux.ai/vasyl/cp2102n-a02-gqfn28~xo8.md) - Manufacturer Part Number: CP2102N-Axx-xQFN28 - Package or Case Code: CP2102N-A02-GQFN28 - Datasheet URL: https://www.silabs.com/documents/public/data-sheets/cp2102n-datasheet.pdf - Manufacturer Name: SILICON LABS - Part Type: Integrated Circuit **Pins:** - ~CTS - ~DCD - ~DSR - ~DTR - ~RI~/CLK - ~RST - ~RTS - ~RXT~/GPIO.1 - ~SUSPEND - ~TXT~/GPIO.0 - ~WAKEUP~/GPIO.3 - CHR0 - CHR1 - CHREN - D- - D+ - GND - GND - GPIO.4 - GPIO.5 - GPIO.6 - NC - RS485/GPIO.2 - RXD - SUSPEND - TXD - VBUS - VDD - VREGIN ### U7 — [PCA9685PW,118](https://www.flux.ai/vasy_skral/pca9685pwc118-old~ahm.md) - Manufacturer Name: NXP - Part Type: Integrated Circuit - Package or Case Code: 28-TSSOP - Manufacturer Part Number: PCA9685PW,118 - Datasheet URL: https://www.nxp.com/docs/en/data-sheet/PCA9685.pdf - Manufacturer Part Number: PCA9685PW,118 **Pins:** - ~OE - A0 - A1 - A2 - A3 - A4 - A5 - EXTCLK - LED0 - LED1 - LED10 - LED11 - LED12 - LED13 - LED14 - LED15 - LED2 - LED3 - LED4 - LED5 - LED6 - LED7 - LED8 - LED9 - SCL - SDA - VDD - VSS ### U8 — [ZED-F9P-01B](https://www.flux.ai/adrian95/zed-f9p-01b~7mq.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Dual-band RTK GNSS receiver module - Part Type: Module - Manufacturer Name: U-blox - Manufacturer Part Number: ZED-F9P-01B - Datasheet URL: https://content.u-blox.com/sites/default/files/ZED-F9P-04B_DataSheet_UBX-21044850.pdf - Role: Modulation / Demodulation **Pins:** - ANT_DETECT [pin 4] - ANT_OFF [pin 5] - ANT_SHORT_N [pin 6] - D_SEL [pin 47] - EP_1 [pin 55] - EP_10 [pin 64] - EP_11 [pin 65] - EP_12 [pin 66] - EP_13 [pin 67] - EP_14 [pin 68] - EP_15 [pin 69] - EP_16 [pin 70] - EP_17 [pin 71] - EP_18 [pin 72] - EP_19 [pin 73] - EP_2 [pin 56] - EP_20 [pin 74] - EP_21 [pin 75] - EP_22 [pin 76] - EP_23 [pin 77] - EP_24 [pin 78] - EP_25 [pin 79] - EP_26 [pin 80] - EP_27 [pin 81] - EP_28 [pin 82] - EP_29 [pin 83] - EP_3 [pin 57] - EP_30 [pin 84] - EP_31 [pin 85] - EP_32 [pin 86] - EP_33 [pin 87] - EP_34 [pin 88] - EP_35 [pin 89] - EP_36 [pin 90] - EP_37 [pin 91] - EP_38 [pin 92] - EP_39 [pin 93] - EP_4 [pin 58] - EP_40 [pin 94] - EP_41 [pin 95] - EP_42 [pin 96] - EP_43 [pin 97] - EP_44 [pin 98] - EP_45 [pin 99] - EP_46 [pin 100] - EP_47 [pin 101] - EP_48 [pin 102] - EP_5 [pin 59] - EP_6 [pin 60] - EP_7 [pin 61] - EP_8 [pin 62] - EP_9 [pin 63] - EXTINT [pin 51] - GEOFENCE_STAT [pin 19] - GND_1 [pin 1] - GND_2 [pin 3] - GND_3 [pin 12] - GND_4 [pin 14] - GND_5 [pin 32] - GND_6 [pin 37] - GND_7 [pin 41] - GND_8 [pin 48] - RESERVED_1 [pin 8] - RESERVED_10 [pin 21] - RESERVED_11 [pin 22] - RESERVED_12 [pin 23] - RESERVED_13 [pin 24] - RESERVED_14 [pin 25] - RESERVED_15 [pin 28] - RESERVED_16 [pin 29] - RESERVED_17 [pin 30] - RESERVED_18 [pin 31] - RESERVED_19 [pin 35] - RESERVED_2 [pin 9] - RESERVED_20 [pin 52] - RESERVED_21 [pin 54] - RESERVED_3 [pin 10] - RESERVED_4 [pin 11] - RESERVED_5 [pin 13] - RESERVED_6 [pin 15] - RESERVED_7 [pin 16] - RESERVED_8 [pin 17] - RESERVED_9 [pin 18] - RESET_N [pin 49] - RF_IN [pin 2] - RTK_STAT [pin 20] - RXD_/_SPI_MOSI [pin 43] - RXD2 [pin 26] - SAFEBOOT_N [pin 50] - SCL_/_SPI_CLK [pin 45] - SDA_/_SPI_CS_N [pin 44] - TIMEPULSE [pin 53] - TX_READY [pin 46] - TXD_/_SPI_MISO [pin 42] - TXD2 [pin 27] - USB_DM [pin 39] - USB_DP [pin 40] - V_BCKP [pin 36] - V_USB [pin 38] - VCC_1 [pin 33] - VCC_2 [pin 34] - VCC_RF [pin 7] ### USB_D- — Label **Pins:** - P1 - P2 ### USB_D- — Label **Pins:** - P1 - P2 ### USB_D- — Label **Pins:** - P1 - P2 ### USB_D+ — Label **Pins:** - P1 - P2 ### USB_D+ — Label **Pins:** - P1 - P2 ### USB_D+ — Label **Pins:** - P1 - P2 ### VIN — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### VIN — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### VIN — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### VUSB — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### VUSB — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### VUSB — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/dmcleln/example-esp32-reference-design~ji](https://www.flux.ai/dmcleln/example-esp32-reference-design~ji).* --- *Generated from [https://www.flux.ai/dmcleln/example-esp32-reference-design~ji](https://www.flux.ai/dmcleln/example-esp32-reference-design~ji)*