Project Idea Start

eshan2

eshan2

WhatsApp Image 2026-08-05 at 4.32.47 PM.jpeg

Image

WhatsApp Image 2026-08-05 at 4.32.48 PM.jpeg

Image

flux

That identifies it: it’s a WEMOS D1 R32 V1.0.0, an Arduino Uno-form-factor ESP32 board. I’ll update the carrier design to use its shield-header pinout and mechanical pattern.

flux

The photos confirm your board is a WEMOS D1 R32 V1.0.0, using the Arduino Uno-style shield connector layout—not the current 38-pin ESP32 DevKit footprint.
The existing sensor-carrier schematic remains intact. The following update is still pending because no ACUs are currently available:
  • Replace the ESP32 DevKit interface with D1 R32 shield headers
  • Verify and remap the sensor GPIO connections
  • Apply the Arduino Uno R3 mechanical header pattern
  • Update the specification, firmware, and bring-up files
  • Re-run ERC/connectivity checks
No partial replacement was made, so the current schematic has not been left broken.
Map sensor GPIOs
Find D1 R32 footprint
Show header pinout
Check pin conflicts
Update requirements
J5
J2
J7
U1
J3
R8
Resistance
5.1kΩ
R3
Resistance
1kΩ
R2
Resistance
5.1kΩ
R1
Resistance
5.1kΩ
R7
Resistance
20kΩ
R6
Resistance
10kΩ
R5
Resistance
100kΩ
R4
Resistance
450kΩ
R9
Resistance
100kΩ
F1
C6
Capacitance
120pF
C5
Capacitance
10uF
J1
D3
D1
C4
Capacitance
10uF
C3
Capacitance
4.7uF
C2
Capacitance
100nF
C8
Capacitance
100nF
C1
Capacitance
470uF
C7
Capacitance
100nF
L1
Inductance
470nH
J4
J6
U2
D2

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Block Diagram
Diagram



  
    
  
  
    
  



























UART1

UART2

I2S

ADC1 + divider/clamp

GPIO

software UART













USB-C 5 V power-only
CC sink + fuse + TVS + reverse-current blocking
Protected carrier 5 V
ESP32-WROOM-32 development board VIN/5V
Laptop on dev-board USB
Dev-board regulated 3.3 V
MR60BHA2 header
MR60FDA2 header
MQ-2 module header
INMP441 I2S header
DHT11 header
Optional XIAO ESP32S3 Sense UART header
Common GND
Functional groups
  1. USB-C power input and protection
  2. ESP32 development-board headers and isolated 5 V feed
  3. Radar UART headers
  4. INMP441 I2S microphone header
  5. MQ-2 analog interface
  6. DHT11 digital interface
  7. Optional XIAO software-UART expansion
Reference sourcing plan
  • USB-C power/protection: search validated references; import only if a focused power-only block fits.
  • ESP32 development-board carrier: connector-based from scratch because the dev board is a ready-made module.
  • Sensor/module interfaces: connector-based from scratch where exact modules are unavailable.
  • 3.3 V regulation: use the dev-board rail only if documented current budget is adequate; otherwise add a carrier regulator after budget review.

  • Functional groups

  • Reference sourcing plan

Documents

Assets

Assets are files uploaded to this project which can be used in various ways.

ESP32 Multi-Sensor Carrier thumbnail
Beginner-friendly ESP32 carrier with protected USB-C power and headers for radar, audio, gas, climate, and future UART sensors.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$0.33–$0.80

Digi-Key

$0.00

HQonline

$0.27–$0.33

LCSC

$22.05–$22.52

Mouser

$1.51–$1.94

TME

$0.60–$0.72

Verical

$0.29–$2.53

Controls