Meshtastic Radio Design Inquiry

Here is the system architecture I saved into the project property System Architecture:

Diagram


""Power and Charging"" ""Compute and Connectivity"" ""LoRa Radio"" ""Programming and Debug"" VBUS node_5V SYS 3V3 3V3 BLE Wi-Fi USB Serial SPI + GPIO RF UART BOOT/EN USB-C Connector Li-ion Charger with Power Path Li-ion Battery 3.3V Regulator MCU LORA Phone App Wi-Fi Network Antenna USB-UART or USB native Buttons

selected and added core schematic blocks

2:01

Search 9 components.
Started: selecting core parts for ESP32 LoRa power.
Search complete.
Read schematic.

Added 30 components

0:09

Added 1x ESP32-S3-WROOM-1-N16R8 as IC1

Added 1x Wio-SX1262 Wireless Module as IC2

Added 1x USB-C 2.0 Receptacle as J1

Added 1x BQ24075TRGTR as IC3

Added 1x TPS63031DSKR as U1

Added 1x USBLC6-2P6 as U2

Added 1x B2B-PH-K-S(LF)(SN) as J2

Added 1x U.FL-R-SMT-1(10) as J3

Added 1x CP2102N-A02-GQFN20 as U3

Added 7x Generic Resistor as R1, R2, R3, R4, R5, R6, R7

Added 13x Generic Capacitor as C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13

Added 1x Generic Inductor as L1

wiring USB-C, charger, regulator, MCU, LoRa...

2:54

Started: wiring USB-C, charger, regulator, MCU, LoRa.
Reading schematic for IC1, IC2, J1 and 6 more.
Running 8 design checks.
Reading schematic for J1, U1, IC2 and 2 more...

No changes applied.

0:01

Updated 32 connections

0:14

Connected J1:GND, U2:GND, U3:GND, U3:GND, IC3:VSS, IC3:EP, U1:GND, U1:PGND, U1:EP, IC1:GND_1, IC1:GND_2, IC1:GND_3, IC1:GND_4, IC1:GND_5, IC1:GND_6, IC1:GND_7, IC1:GND_8, IC1:GND_9, IC1:GND_10, IC1:GND_11, IC2:GND_1, IC2:GND_2, J3:Outer_Contact, J3:Outer_Contact, J2:PIN2, C1:P2, C2:P2, C3:P2, C4:P2, C5:P2, C6:P2, C7:P2, C8:P2, C9:P2, C10:P2, C11:P2, C12:P2, C13:P2, R1:P2, R2:P2, R3:P2, R4:P2 to ^GND

Connected J1:VBUS, J1:VBUS, J1:VBUS, J1:VBUS, IC3:IN, U2:VBUS, C9:P1, U3:VREGIN, U3:USB to ^VBUS_5V

Connected J1:CC1, R1:P1 to ^USB_CC1

Connected J1:CC2, R2:P1 to ^USB_CC2

Connected J1:D+, J1:D+, U2:I/O1, U3:D+ to ^USB_DP

Connected J1:D-, J1:D-, U2:I/O2, U2:I/O2, U3:D- to ^USB_DM

Connected U1:VOUT, U1:FB, IC1:3V3, IC2:VCC, U3:VDD, C1:P1, C2:P1, C3:P1, C4:P1, C5:P1, C6:P1, C7:P1, C8:P1, C12:P1 to ^3V3

Connected IC3:OUT_1, IC3:OUT_2, U1:VIN, U1:VINA, C10:P1 to ^SYS

Connected IC3:BAT_1, IC3:BAT_2, J2:PIN1, C11:P1 to ^VBAT

Connected U1:L1, L1:P1 to ^SW_L1

Connected U1:L2, L1:P2 to ^SW_L2

Connected U1:EN, U1:PS/SYNC, U1:VIN to ^REG_CTRL

Connected IC1:EN, R3:P1, IC1:3V3 to ^ESP_EN

Connected IC2:NRST, R7:P1, IC2:VCC to ^LORA_NRST

Connected IC1:IO12, IC2:NSS to ^LORA_NSS

Connected IC1:IO11, IC2:SCK to ^LORA_SCK

Connected IC1:IO10, IC2:MOSI to ^LORA_MOSI

Connected IC1:IO9, IC2:MISO to ^LORA_MISO

Connected IC1:IO13, IC2:DIO1 to ^LORA_DIO1

Connected IC1:IO14, IC2:BUSY to ^LORA_BUSY

Connected IC2:ANT, C13:P1 to ^LORA_RF

Connected C13:P2, J3:Center_Contact to ^ANT_EXT

Connected U3:TXD, IC1:RXD0 to ^UART_TX_TO_ESP_RX

Connected U3:RXD, IC1:TXD0 to ^UART_RX_FROM_ESP_TX

Connected IC3:~CE, IC3:IN to ^CHG_CE

Connected IC3:EN1, IC3:IN to ^CHG_EN1

Connected IC3:EN2, IC3:IN to ^CHG_EN2

Connected IC3:SYSOFF, IC3:VSS to ^CHG_SYSOFF

Connected IC3:TS, IC3:VSS to ^CHG_TS

Connected IC3:TMR, IC3:VSS to ^CHG_TMR

Connected IC3:ISET, IC3:VSS to ^CHG_ISET

Connected IC3:ILIM, IC3:VSS to ^CHG_ILIM

nets {

net GND = J1:GND, IC3:ILIM, IC3:ISET, IC3:TMR, IC3:TS, IC3:SYSOFF, IC1:GND_2, IC1:GND_3, IC1:GND_4, IC1:GND_5, IC1:GND_6, IC1:GND_7, IC1:GND_8, IC1:GND_9, IC1:GND_10, IC1:GND_11, J3:Center_Contact, R4:P2, R3:P2, R2:P2, R1:P2, C13:P2, C12:P2, C11:P2, C10:P2, C9:P2, C8:P2, C7:P2, C6:P2, C5:P2, C4:P2, C3:P2, C2:P2, C1:P2, J2:PIN2, J3:Outer_Contact, IC2:GND_2, IC2:GND_1, IC1:GND_1, U1:EP, U1:PGND, U1:GND, IC3:EP, IC3:VSS, U3:GND, U2:GND;

net VBUS_5V = J1:VBUS, IC3:EN2, IC3:EN1, IC3:~CE, U3:USB, U3:VREGIN, C9:P1, U2:VBUS, IC3:IN;

net USB_CC1 = J1:CC1, R1:P1;

net USB_CC2 = J1:CC2, R2:P1;

net USB_DP = J1:D+, U3:D+, U2:I/O1;

net USB_DM = J1:D-, U3:D-, U2:I/O2;

net 3V3 = U1:VOUT, R7:P1, IC2:NRST, R3:P1, IC1:EN, C12:P1, C8:P1, C7:P1, C6:P1, C5:P1, C4:P1, C3:P1, C2:P1, C1:P1, U3:VDD, IC2:VCC, IC1:3V3, U1:FB;

net SYS = IC3:OUT_2, IC3:OUT_1, U1:VIN, U1:PS/SYNC, U1:EN, U1:VINA, C10:P1;

net VBAT = IC3:BAT_2, IC3:BAT_1, C11:P1, J2:PIN1;

net SW_L1 = U1:L1, L1:P1;

net SW_L2 = U1:L2, L1:P2;

net LORA_NSS = IC1:IO12, IC2:NSS;

net LORA_SCK = IC1:IO11, IC2:SCK;

net LORA_MOSI = IC1:IO10, IC2:MOSI;

net LORA_MISO = IC1:IO9, IC2:MISO;

net LORA_DIO1 = IC1:IO13, IC2:DIO1;

net LORA_BUSY = IC1:IO14, IC2:BUSY;

net LORA_RF = IC2:ANT, C13:P1;

net UART_TX_TO_ESP_RX = U3:TXD, IC1:RXD0;

net UART_RX_FROM_ESP_TX = U3:RXD, IC1:TXD0;

}

Updated project description

0:09

Updated to: "USB-C and Li-ion powered Meshtastic LoRa radio (ESP32-S3 + SX1262)"

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    Meshie

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    Meshie the cheap meshtastic device... probably

    Properties

    Diagram


    ""Power and Charging"" ""Compute and Connectivity"" ""LoRa Radio"" ""Programming and Debug"" VBUS node_5V SYS 3V3 3V3 BLE Wi-Fi USB Serial SPI + GPIO RF UART BOOT/EN USB-C Connector Li-ion Charger with Power Path Li-ion Battery 3.3V Regulator MCU LORA Phone App Wi-Fi Network Antenna USB-UART or USB native Buttons

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $4.08–$7.02

    Digi-Key

    $14.10–$16.03

    LCSC

    $12.75–$12.89

    Mouser

    $23.79

    TME

    $1.59

    Verical

    $5.69–$15.28

    Controls