# ESP32 Cellular IoT ## Description ESP32-based cellular IoT board using a Telit Cinterion TX62-W LTE-M/NB-IoT modem with integrated eSIM/eUICC support, UART host control, and dedicated power/RF design blocks. ## Project Details - **Owner:** angus1234 - **Created:** 7/23/2026 - **Last Updated:** 7/23/2026 - **Visibility:** Public ## Key Components ### J1 — [TYPE-C-2.0-16PIN-SMT-3-OR](https://www.flux.ai/lcsc/type-c-2p0-16pin-smt-3-or~957d.md) - Package or Case Code: USB-SMD_TYPE-C16PIN-1 - Manufacturer Part Number: TYPE-C-2.0-16PIN-SMT-3-OR - Part Type: USB Connectors - JLCPCB Part Class: Extended Part - LCSC Part Number: C2987387 - Role: USB Connector - Manufacturer Name: CIKI(皓富) - Role Details: USB-C sink/device connector for ESP32-S3 native USB and VBUS input **Pins:** - 17 [pin 17] - 18 [pin 18] - 19 [pin 19] - 20 [pin 20] - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin B1A12] - GND [pin A1B12] - SBU1 [pin A8] - SBU2 [pin B8] - VBUS [pin A4B9] - VBUS [pin B4A9] ### J2 — [RECE.20279.001E.01](https://www.flux.ai/jecstronic/recep20279p001ep01~tt9.md) - Role: RF Tuning / Matching - Role Details: 50 ohm U.FL connector for TX62-W LTE main antenna - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: RECE.20279.001E.01 - Manufacturer Name: Taoglas Limited - Datasheet URL: https://cdn.taoglas.com/datasheets/RECE.20279.001E.01.pdf **Pins:** - GND [pin 2] - GND [pin 3] - SIGNAL [pin 1] ### J3 — [RECE.20279.001E.01](https://www.flux.ai/jecstronic/recep20279p001ep01~tt9.md) - Role: RF Tuning / Matching - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 50 ohm U.FL connector for TX62-W GNSS antenna input - Manufacturer Part Number: RECE.20279.001E.01 - Datasheet URL: https://cdn.taoglas.com/datasheets/RECE.20279.001E.01.pdf - Manufacturer Name: Taoglas Limited **Pins:** - GND [pin 2] - GND [pin 3] - SIGNAL [pin 1] ### SW1 — [4*4*1.7](https://www.flux.ai/jecstronic/441p7~meh.md) - LCSC Part Number: C10852 - Role Details: Momentary reset button for ESP32 EN - Manufacturer Part Number: 4*4*1.7 - Manufacturer Name: BOOMELE(Boom Precision Elec) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1810262111_BOOMELE-Boom-Precision-Elec-C10852_C10852.pdf - Role: Switching - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Switch **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### SW2 — [4*4*1.7](https://www.flux.ai/jecstronic/441p7~meh.md) - Manufacturer Name: BOOMELE(Boom Precision Elec) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1810262111_BOOMELE-Boom-Precision-Elec-C10852_C10852.pdf - Role: Switching - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Momentary boot/download button for ESP32 GPIO0 - Part Type: Switch - LCSC Part Number: C10852 - Manufacturer Part Number: 4*4*1.7 **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) - Role: MCU - Part Type: Module - Manufacturer Name: Espressif Systems - License: https://creativecommons.org/licenses/by/4.0/ - Symbol Style: parametric-v1 - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Role Details: ESP32 host controller for cellular modem - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_wroom_1_wroom_1u_datasheet_en-2930317.pdf **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 — TX62-W - Manufacturer Part Number: TX62-W - Manufacturer Name: Telit Cinterion - Mount: Surface Mount - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/596b5b60c754d119969a4d3898d2b2041c8707776cf5415ae4413724873dfe16.pdf - Role: Cellular Modem - Part Type: Integrated Circuits - Package or Case Code: Module - Role Details: Telit Cinterion TX62-W LTE-M/NB-IoT modem, embedded eSIM option; custom datasheet-backed part **Pins:** - ADC1 [pin F15] - BATT+BB [pin H16] - BATT+BB [pin H15] - BATT+RF [pin G16] - BATT+RF [pin G15] - CC2_CLK [pin K17] - CC2_IO [pin M16] - CC2_RST [pin L17] - CC2_VCC [pin L16] - CC2_VPP [pin J17] - CCCLK [pin K15] - CCIN [pin M15] - CCIO [pin M14] - CCRST [pin L15] - CCVCC [pin L14] - CTS0 [pin L13] - CTS1/GPIO19/SPI_CLK [pin J8] - DCD0/GPIO2 [pin K14] - DSR0/GPIO3 [pin L11] - DTR0/GPIO1 [pin K13] - EMERG_RST [pin E15] - FAST_SHDN/GPIO4 [pin K10] - GND [pin D12] - GND [pin F10] - GND [pin M17] - GND [pin J16] - GND [pin C15] - GND [pin D11] - GND [pin B7] - GND [pin F14] - GND [pin M11] - GND [pin B17] - GND [pin C14] - GND [pin C16] - GND [pin D14] - GND [pin B11] - GND [pin G14] - GND [pin B10] - GND [pin C13] - GND [pin C10] - GND [pin F7] - GND [pin C9] - GND [pin D13] - GND [pin C11] - GND [pin E10] - GND [pin B8] - GND [pin B14] - GND [pin H14] - GND [pin M7] - GND [pin C12] - GND [pin B16] - GND [pin J10] - GND [pin B13] - GND [pin E14] - GND [pin G10] - GND [pin F17] - GND [pin M8] - GND [pin D10] - GNSS_ANT [pin B9] - GPIO20 [pin G8] - GPIO21 [pin E8] - GPIO22 [pin D8] - GPIO23 [pin H8] - GPIO25 [pin F8] - GPIO7/PWM1 [pin E7] - I2CCLK [pin H10] - I2CDAT [pin H9] - ON [pin D15] - RF_OUT [pin B12] - RING0/GPIO24 [pin K12] - RTS0 [pin L12] - RTS1/GPIO18/SPI_CS [pin K8] - RXD0 [pin M12] - RXD1/GPIO16/MOSI [pin J9] - SIM_SWITCH/GPIO8/COUNTER [pin C8] - STATUS/GPIO5 [pin K9] - SUSPEND_MON [pin F9] - TXD0 [pin M13] - TXD1/GPIO17/MISO [pin L8] - USB_DN [pin M10] - USB_DP [pin M9] - V180 [pin J15] - VCORE [pin E16] - VUSB_IN [pin L9] ### U3 — [TXB0108PW](https://www.flux.ai/kicad-part-library/txb0108pw~h97.md) - Manufacturer Part Number: TXB0108PW - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: TSSOP-20_4.4x6.5mm_P0.65mm - Datasheet URL: http://www.ti.com/lit/ds/symlink/txb0108.pdf - Role: Level Shifter - Role Details: 8-bit 1.8 V to 3.3 V translator for modem UART/control/status signals **Pins:** - A1 [pin 1] - A2 [pin 3] - A3 [pin 4] - A4 [pin 5] - A5 [pin 6] - A6 [pin 7] - A7 [pin 8] - A8 [pin 9] - B1 [pin 20] - B2 [pin 18] - B3 [pin 17] - B4 [pin 16] - B5 [pin 15] - B6 [pin 14] - B7 [pin 13] - B8 [pin 12] - GND [pin 11] - OE [pin 10] - V_{CCA} [pin 2] - V_{CCB} [pin 19] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/angus1234/esp32-cellular-iot~50](https://www.flux.ai/angus1234/esp32-cellular-iot~50).* --- *Generated from [https://www.flux.ai/angus1234/esp32-cellular-iot~50](https://www.flux.ai/angus1234/esp32-cellular-iot~50)*