로라 통신 온도센서 설계

flux

0:00

Work done
  • Component placement:
    • U1 (E22-900T22S1B LoRa module)
    • U2 (STM32G030J6M6 MCU)
    • U3 (SHT40-AD1B-R2 sensor)
    • BT1 (Battery Holder Keystone 1076 1xAAA)
    • U4 (TPS613221ADBV boost converter)
    • J1 (SMW250-04P SWD header)
    • J2 (U.FL-R-SMT antenna connector)
  • Power & signal integration:
    • [BT1]→[U4] input, [U4]→3V3 net with decoupling caps C1, C2
    • UART TX/RX between [U2] and [U1]
    • GPIO (AUX, M0, M1) from [U1] to [U2]
    • I²C SDA/SCL between [U2] and [U3] with 4.7 kΩ pull-ups R1, R2 to 3.3 V
    • SWDIO, SWDCLK, VCC, GND routed from [U2] to [J1]
Cannot do
  • Fetch ERC/DRC results
  • Position [U1] and [J2] at board edge for RF optimization
  • Define RF keepout zones and add ground stitching
  • Route 50 Ω microstrip from [U1]:ANT to [J2]
  • Isolate boost converter from RF area
Success criteria
  • ✅ Complete schematic: all specified components placed and connected
  • ✅ Power & signal nets implemented (battery boost, UART, I²C with pull-ups, SWD)
  • ❌ RF layout practices not yet addressed (placement, keepouts, microstrip, isolation)
Next step Proceed to PCB layout: configure stack-up and layout rules, place footprints on the board, and implement RF considerations (edge placement, keepout zones, ground stitching, 50 Ω trace, and converter isolation).
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Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    step

    E22-900T22S/E22-900T22S.3dshapes/WIRELM-SMD_L20.0-W16.0-H3.2-E22-900T22S.step

    E22-900T22S/E22-900T22S Model3D Model
    kicad_mod

    E22-900T22S/E22-900T22S.pretty/WIRELM-SMD_E22-900T22S.kicad_mod

    E22-900T22S/E22-900T22S FootprintFootprint
    E22-900T22S Symbol.svg

    E22-900T22S Symbol.svg

    E22-900T22S SymbolDefault

    E22-900T22S

    E22-900T22S thumbnail
    LoRa Modules E22-900T22S WIRELM-SMD_E22-900T22S LCSC Part Number: C411289 JLCPCB Part Class: Extended Part Manufactured by EBYTE(亿佰特)

    Properties

    EBYTE(亿佰特)

    U

    lcsc.com/datasheet/lcsc_datasheet_2409251704_Chengdu-Ebyte-Elec-Tech-E22-900T22S_C411289.pdf

    E22-900T22S

    C411289

    lcsc.com/product-detail/Wireless-Modules_Chengdu-Ebyte-Elec-Tech-E22-900T22S_C411289.html

    WIRELM-SMD_E22-900T22S

    LoRa Modules

    Extended Part

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $1.48–$1.55

    Digi-Key

    $5.60–$12.10

    LCSC

    $8.95

    Mouser

    $5.11–$7.67

    Verical

    $1.35–$3.11

    Controls