Meshtastic Radio Design Inquiry

flux

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.
Read schematic for IC1, IC2, J1 and 6 more.
Running 8 design checks.
Read 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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  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
    jharwinbarrozo
    16.2k
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
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  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
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Meshie

Meshie thumbnail
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