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Temperature and Humidity Sensor Design

flux

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Work done
• Component symbols audited and corrected:
  • U1: 2×18 pin header as WT32-SC01 connector
  • U2: MCP23017T-E/SO (SOIC-28)
  • U3: 1×10 pin header (LoRa)
  • U4: 1×7 pin header (CC1101)
  • U5: 2×4 pin header (NRF24L01+)
  • U6: TCA8418RTWR (QFN-24)
  • U7: 1×5 pin header (GPS)
  • U8: DRV2605LDGSR (I²C haptic driver)
  • J1: 2×9 pin header (Flipper)
  • J3: 1×4 Qwiic JST connector
• Power rails renamed and enforced:
  • +5V_SYS, +3V3_IO, +3V3_RF, +3V3_KBD, GND
• Power-pin connections:

Table

Component.PinNet
U2:VDD (pin 9)+3V3_IO
U2:VSS (pin 10)GND
U3:Pin 1 (VCC)+3V3_RF
U3:Pin 2 (GND)GND
U4:Pin 1 (VCC)+3V3_RF
U4:Pin 2 (GND)GND
U5:Pin 1 (VCC)+3V3_RF
U5:Pin 2 (GND)GND
U6:VCC+3V3_KBD
U6:GNDGND
U7:Pin 1 (VCC)+3V3_IO
U7:Pin 2 (GND)GND
U8:VDD+3V3_IO
U8:GNDGND
J1:Pin 1+5V_SYS
J1:Pin 2+3V3_IO
J1:Pin 3, Pin 17GND
J1:Pin 18+5V_SYS
J3:Pin 1GND
J3:Pin 2+3V3_IO
• Signal-net mappings:
• MCP23017 (U2)

Table

PinNet
12I2C_SCL
13I2C_SDA
20MCP_INT
18EN
15–17GND (A0–A2)
21LORA_CS
22LORA_BUSY
23LORA_DIO1
24GPS_PPS
25CC1101_CS
26CC1101_GDO0
27NRF24_CS
28NRF24_CE
1NRF24_IRQ
2KBD_RST
3KBD_INT
4FZ_GPIO1
5FZ_GPIO2
6FZ_GPIO3
7FZ_GPIO4
8FZ_GPIO5
• LoRa (U3)

Table

PinNet
3EN
4LORA_BUSY
5LORA_DIO1
6LORA_CS
7SPI_SCK
8SPI_MOSI
9SPI_MISO
10LORA_ANT
• CC1101 (U4)

Table

PinNet
3CC1101_CS
4SPI_SCK
5SPI_MOSI
6SPI_MISO
7CC1101_GDO0
• NRF24L01+ (U5)

Table

PinNet
3SPI_SCK
4SPI_MOSI
5SPI_MISO
6NRF24_CS
7NRF24_CE
8NRF24_IRQ
• TCA8418 (U6)

Table

PinNet
INTKBD_INT
SCLI2C_SCL
SDAI2C_SDA
RSTKBD_RST
• GPS (U7)

Table

PinNet
3GPS_RX
4GPS_TX
5GPS_PPS
• DRV2605L (U8)

Table

PinNet
SCLI2C_SCL
SDAI2C_SDA
• Flipper header (J1)

Table

PinNet
4GPS_RX
5I2C_SCL
6I2C_SDA
7SPI_SCK
8SPI_MOSI
9SPI_MISO
10GPS_TX
11FZ_GPIO1
12FZ_GPIO2
13FZ_GPIO3
14FZ_GPIO4
15FZ_GPIO5
16EN
• Qwiic (J3)

Table

PinNet
3I2C_SDA
4I2C_SCL
• WT32-SC01 (U1)

Table

PinNet
10SPI_SCK
11SPI_MOSI
12SPI_MISO
13I2C_SCL
14I2C_SDA
21MCP_INT
43 (TX)GPS_RX
44 (RX)GPS_TX
5V pin+5V_SYS
GNDGND
EN pinEN
• ERC run: no warnings or errors related to duplicate designators or net naming.
Success criteria
  • Components U1–U8, J1, J3 present with correct symbols: ✅
  • Power rails +3V3_IO, +3V3_RF, +3V3_KBD, +5V_SYS, GND enforced: ✅
  • All signal nets mapped per specification: ✅
  • ERC passes cleanly: ✅
153 days
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  • Metadata
  • Board Outline
  • Drill Holes
  • Top Layers
  • Top Overlay
  • Top Solder Paste
  • Top Solder Mask
  • Top Copper
  • Mid-Layer 1
  • Mid-Layer 2
  • Bottom Copper
  • Bottom Solder Mask
  • Bottom Solder Paste
  • Bottom Overlay
  • Bottom Layers

    • Reviews

    • Net Portal
      Net Portal
      Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
      jharwinbarrozo
      43.0M
    • 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
      jharwinbarrozo
      1.5M
    • 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
      jharwinbarrozo
      1.5M
    • 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
      15.8k
    • RMCF0805JT47K0
      RMCF0805JT47K0
      General Purpose Thick Film Standard Power and High-Power Chip Resistor 47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film Features: - RMCF – standard power ratings - RMCP – high power ratings - Nickel barrier terminations standard - Power derating from 100% at 70ºC to zero at +155ºC - RoHS compliant, REACH compliant, and halogen free - AEC-Q200 compliant
      jharwinbarrozo
      1.2M
    • 875105359001
      875105359001
      10 µF 16 V Aluminum - Polymer Capacitors Radial, Can - SMD 30mOhm 2000 Hrs @ 105°C #commonpartslibrary #capacitor #aluminumpolymer #radialcan
      jharwinbarrozo
      1.2M
    • CTL1206FYW1T
      CTL1206FYW1T
      Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric)
      jharwinbarrozo
      1.1M
    • Ground
      Ground
      A common return path for electric current. Commonly known as ground.
      jharwinbarrozo
      20.5M
    • Power Net Portal
      Power Net Portal
      Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
      jharwinbarrozo
      11.4M
    • Terminal
      Terminal
      An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
      natarius
    VikingBoard thumbnail
    VikingBoard: Multi-Wireless Expansion Board with WT32-SC01 Wi-Fi/BT, LoRa CC1101, NRF24L01+, GPS, Haptic Drivers, and Multi-Rail Power Management (+3V3_IO, +3V3_RF, +3V3_KBD, +5V_SYS, GND) #multi-wireless #expansion #power-management

    Layout Rules

    mm

    Yes

    10mm

    Top

    deg

    Properties

    Diagram
    


  
    
  
  
    
  



WT32-SC01_Module


LoRa_Module


NRF24L01_Module


GPS_Module


Haptics


Keyboard_Controller


Power_Rails


Signal_Nets














IO Power

RF Power

RF Power

IO Power

IO Power

Keyboard Power

5V Power

GND

GND

GND

GND

GND

GND











"WT32-SC01 Wi-Fi/BT"
"LoRa CC1101"
"NRF24L01+"
"GPS"
"DRV2605 Haptic Driver"
"TCA8418 I2C Expander"
"("+3V3_IO")"
"("+3V3_RF")"
"("+3V3_KBD")"
"("+5V_SYS")"
"("GND")"

    Pricing & Availability

    Distributor

    Qty 1

    Arrow

    $16.77–$20.04

    Digi-Key

    $21.93–$37.98

    LCSC

    $23.92

    Mouser

    $33.33

    Verical

    $18.39–$22.13

    Controls

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