# Meshie ## Description Meshie the cheap meshtastic device... probably ## Project Details - **Owner:** heyitzsock - **Created:** 2/22/2026 - **Last Updated:** 2/22/2026 - **Visibility:** Public - **System Architecture:** ```mermaid flowchart TD subgraph Power [Power and Charging] USB[USB-C Connector] -->|VBUS 5V| CHG[Li-ion Charger with Power Path] BAT[Li-ion Battery] --> CHG CHG -->|SYS| REG33[3.3V Regulator] REG33 -->|3V3| MCU REG33 -->|3V3| LORA end subgraph Compute [Compute and Connectivity] MCU[ESP32-S3 Module Wi-Fi + BLE] -->|BLE| PHONE[Phone App] MCU -->|Wi-Fi| WIFI[Wi-Fi Network] MCU -->|USB Serial| USB end subgraph Radio [LoRa Radio] MCU -->|SPI + GPIO| LORA[LoRa Transceiver Module] LORA -->|RF| ANT[Antenna] end subgraph Debug [Programming and Debug] MCU -->|UART| PROG[USB-UART or USB native] MCU -->|BOOT/EN| BTN[Buttons] end ``` ## Key Components ### IC1 — [ESP32-S3-WROOM-1-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1-n16r8.md) - Role Details: ESP32-S3 Wi-Fi + BLE; runs Meshtastic app - Manufacturer Part Number: ESP32-S3-WROOM-1-N16R8 - Part Type: Module - Datasheet URL: https://www.mouser.com/datasheet/2/891/esp32_s3_wroom_1_wroom_1u_datasheet_en-2930317.pdf - Package: Module - Role: MCU - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Espressif Systems **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] ### IC2 — [Wio-SX1262 Wireless Module](https://www.flux.ai/seeedstudio/wio-sx1262-wireless-module.md) - Role Details: LoRa transceiver module with SPI control - Manufacturer Part Number: 114993390 - Role: LoRa Radio - Manufacturer Name: Seeed Technology Co., Ltd - Package: Module - Package or Case Code: 114993390 - Part Type: RF Transceiver - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://files.seeedstudio.com/products/SenseCAP/Wio_SX1262/Wio-SX1262_Module_Datasheet.pdf **Pins:** - ANT [pin 9] - BUSY [pin 11] - DIO1 [pin 12] - GND_1 [pin 7] - GND_2 [pin 10] - MISO [pin 2] - MOSI [pin 3] - NRST [pin 5] - NSS [pin 6] - RF_SW_ [pin 1] - SCK [pin 4] - VCC [pin 8] ### IC3 — [BQ24075TRGTR](https://www.flux.ai/adrian95/bq24075trgtr.md) - Package or Case Code: QFN50P300X300X100-17N-D - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 1-cell Li-ion charger with power-path (load sharing) for USB 5V - Package: VQFN - Manufacturer Name: Texas Instruments - Datasheet URL: http://componentsearchengine.com/Datasheets/1/BQ24075TRGTR.pdf - Role: Battery Charger - Part Type: Integrated Circuit - Manufacturer Part Number: BQ24075TRGTR **Pins:** - ~CE [pin 4] - ~CHG [pin 9] - ~PGOOD [pin 7] - BAT_1 [pin 2] - BAT_2 [pin 3] - EN1 [pin 6] - EN2 [pin 5] - EP [pin 17] - ILIM [pin 12] - IN [pin 13] - ISET [pin 16] - OUT_1 [pin 10] - OUT_2 [pin 11] - SYSOFF [pin 15] - TMR [pin 14] - TS [pin 1] - VSS [pin 8] ### J1 — [USB-C 2.0 Receptacle](https://www.flux.ai/corynrobinson/usb-c-20-receptacle.md) - Package: USB-C Receptacle - Part Type: USB C - Manufacturer Part Number: USB4105-GF-A - Role: Connector - Manufacturer Name: GTC - Datasheet URL: https://gct.co/files/drawings/usb4105.pdf - Role Details: USB-C receptacle for 5V input and USB2.0 - Purchase Url: https://www.digikey.com/en/products/detail/gct/USB4105-GF-A/11198441 **Pins:** - CC1 [pin 6] - CC2 [pin 12] - D- [pin 9] - D- [pin 7] - D+ [pin 10] - D+ [pin 8] - GND [pin 15] - GND [pin 1] - GND [pin 16] - GND [pin 2] - SBU1 [pin 11] - SBU2 [pin 5] - VBUS [pin 14] - VBUS [pin 13] - VBUS [pin 4] - VBUS [pin 3] ### J2 — [B2B-PH-K-S(LF)(SN)](https://www.flux.ai/jecstronic/b2b-ph-k-slfsn.md) - Role Details: 2-pin JST-PH battery connector for 1S LiPo - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) - Package: THT - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811151524_JST-Sales-America-B2B-PH-K-S-LF-SN_C131337.pdf - Manufacturer Name: JST Sales America - Role: Connector **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J3 — [U.FL-R-SMT-1(10)](https://www.flux.ai/jecstronic/upfl-r-smt-110.md) - Role Details: U.FL external antenna for LoRa 50 ohm - Manufacturer Name: Hirose Electric Co Ltd - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Hirose%20PDFs/EDC3-302540-10.tif.pdf - Part Type: Connector - Package: U.FL - Manufacturer Part Number: U.FL-R-SMT-1(10) - License: https://creativecommons.org/licenses/by/4.0/ - Role: RF Connector **Pins:** - Center_Contact [pin 2] - Outer_Contact [pin 1] - Outer_Contact [pin 3] ### U1 — [TPS63031DSKR](https://www.flux.ai/adrian95/tps63031dskr.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps63030.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Role: Regulator - Manufacturer Name: Texas Instruments - Manufacturer Part Number: TPS63031DSKR - Package: WFDFN-10 - Role Details: 3.3V buck-boost regulator for MCU + LoRa **Pins:** - EN [pin 6] - EP [pin 11] - FB [pin 10] - GND [pin 9] - L1 [pin 4] - L2 [pin 2] - PGND [pin 3] - PS/SYNC [pin 7] - VIN [pin 5] - VINA [pin 8] - VOUT [pin 1] ### U2 — [USBLC6-2P6](https://www.flux.ai/kicad-part-library/usblc6-2p6.md) - Manufacturer Name: Texas Instruments Inc. - Package or Case Code: SOT-666 - Role Details: Low-capacitance ESD protection for USB2 D+ and D- - Datasheet URL: https://www.st.com/resource/en/datasheet/usblc6-2.pdf - Manufacturer Part Number: USBLC6-2P6 - Role: ESD - Package: SOT-23-6 **Pins:** - GND [pin 2] - I/O1 [pin 1] - I/O1 [pin 6] - I/O2 [pin 3] - I/O2 [pin 4] - VBUS [pin 5] ### U3 — [CP2102N-A02-GQFN20](https://www.flux.ai/vasyl/cp2102n-a02-gqfn20.md) - Datasheet URL: https://www.silabs.com/documents/public/data-sheets/cp2102n-datasheet.pdf - Role: USB-UART - Package: QFN-20 - Role Details: USB to UART bridge for ESP32 console/programming - Manufacturer Part Number: CP2102N-A02-GQFN20 - Part Type: Microcontroller - Manufacturer Name: SILICON LABS **Pins:** - ~CTS [pin 15] - ~RTS [pin 16] - ~RXT~/GPIO.3 [pin 19] - ~SUSPEND [pin 11] - ~TXT~/GPIO.2 [pin 20] - ~WAKEUP [pin 13] - CLK/GPIO.0 [pin 2] - D- [pin 5] - D+ [pin 4] - GND [pin 21] - GND [pin 12] - GND [pin 3] - NC [pin 10] - RS485/GPIO.1 [pin 1] - RXD [pin 9] - RXD [pin 17] - SUSPEND [pin 14] - TXD [pin 18] - USB [pin 8] - VDD [pin 6] - VREGIN [pin 7] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/heyitzsock/meshie](https://www.flux.ai/heyitzsock/meshie).* --- *Generated from [https://www.flux.ai/heyitzsock/meshie](https://www.flux.ai/heyitzsock/meshie)*