Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an ESP32 Devkit V1 microcontroller, two load cells, two HX711 bridge sensor interfaces, a GPS NEO 6M module, and an ADXL345 accelerometer. The circuit is designed to interface with various sensors and modules to collect and process data.

Component List

1. ESP32 Devkit V1

   • Description: A powerful microcontroller with built-in Wi-Fi and Bluetooth capabilities.
   • Pins: 3V3, GND, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, VIN

2. Load Cell - Red/white/black/green

   • Description: A sensor used to measure weight or force.
   • Pins: E+, A-, E-, A+

3. HX711 - Bridge Sensor Interface

   • Description: An interface for bridge sensors like load cells, providing amplification and analog-to-digital conversion.
   • Pins: E+, E-, A-, A+, B-, B+, GND - GROUND, DATA (OUT), SCK - CLOCK (IN), 3.3/3.5V Supply

4. GPS NEO 6M

   • Description: A GPS module used for obtaining location data.
   • Pins: VCC, RX, TX, GND

5. ADXL345

   • Description: A 3-axis accelerometer used for measuring acceleration.
   • Pins: GND, VCC, CS, INT1, INT2, SDO, SDA, SCL

Wiring Details

ESP32 Devkit V1

• 3V3 connected to:

  • ADXL345 (VCC)
  • HX711 (3.3/3.5V Supply)
  • HX711 (3.3/3.5V Supply)
  • GPS NEO 6M (VCC)

• GND connected to:

  • ADXL345 (GND)
  • HX711 (GND - GROUND)
  • HX711 (GND - GROUND)
  • GPS NEO 6M (GND)

• RX2 connected to:

  • GPS NEO 6M (TX)

• TX2 connected to:

  • GPS NEO 6M (RX)

• D5 connected to:

  • HX711 (SCK - CLOCK (IN))

• D18 connected to:

  • HX711 (SCK - CLOCK (IN))

• D19 connected to:

  • HX711 (DATA (OUT))

• D21 connected to:

  • ADXL345 (SDA)

• D22 connected to:

  • ADXL345 (SCL)

• D23 connected to:

  • HX711 (DATA (OUT))

Load Cell - Red/white/black/green

• E+ connected to:

  • HX711 (E+)
  • HX711 (E+)

• A- connected to:

  • HX711 (A-)
  • HX711 (A-)

• E- connected to:

  • HX711 (E-)
  • HX711 (E-)

• A+ connected to:

  • HX711 (A+)
  • HX711 (A+)

HX711 - Bridge Sensor Interface

• 3.3/3.5V Supply connected to:

  • ESP32 Devkit V1 (3V3)

• GND - GROUND connected to:

  • ESP32 Devkit V1 (GND)

• SCK - CLOCK (IN) connected to:

  • ESP32 Devkit V1 (D5)
  • ESP32 Devkit V1 (D18)

• DATA (OUT) connected to:

  • ESP32 Devkit V1 (D19)
  • ESP32 Devkit V1 (D23)

• E+ connected to:

  • Load Cell (E+)
  • Load Cell (E+)

• A- connected to:

  • Load Cell (A-)
  • Load Cell (A-)

• E- connected to:

  • Load Cell (E-)
  • Load Cell (E-)

• A+ connected to:

  • Load Cell (A+)
  • Load Cell (A+)

GPS NEO 6M

• VCC connected to:

  • ESP32 Devkit V1 (3V3)

• GND connected to:

  • ESP32 Devkit V1 (GND)

• TX connected to:

  • ESP32 Devkit V1 (RX2)

• RX connected to:

  • ESP32 Devkit V1 (TX2)

ADXL345

• VCC connected to:

  • ESP32 Devkit V1 (3V3)

• GND connected to:

  • ESP32 Devkit V1 (GND)

• SDA connected to:

  • ESP32 Devkit V1 (D21)

• SCL connected to:

  • ESP32 Devkit V1 (D22)

Code

No code is provided for this circuit.