Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates an ESP8266 NodeMCU microcontroller with an HC-SR04 Ultrasonic Sensor. The ESP8266 NodeMCU is used to control and read data from the ultrasonic sensor, which is used for distance measurement. The document includes a list of components, wiring details, and code (if any) for the microcontroller.

Component List

ESP8266 NodeMCU

• Description: A low-cost Wi-Fi microcontroller with GPIO, ADC, and other features.
• Pins: D0, D1, D2, D3, D4, 3V3, GND, D5, D6, D7, D8, RX, TX, A0, RSV, SD3, SD2, SD1, CMD, SD0, CLK, EN, RST, VIN

HC-SR04 Ultrasonic Sensor

• Description: An ultrasonic sensor used for distance measurement.
• Pins: VCC, TRIG, ECHO, GND

Wiring Details

ESP8266 NodeMCU

• D5: Connected to TRIG of HC-SR04 Ultrasonic Sensor
• D6: Connected to ECHO of HC-SR04 Ultrasonic Sensor
• GND: Connected to GND of HC-SR04 Ultrasonic Sensor
• VIN: Connected to VCC of HC-SR04 Ultrasonic Sensor

HC-SR04 Ultrasonic Sensor

• TRIG: Connected to D5 of ESP8266 NodeMCU
• ECHO: Connected to D6 of ESP8266 NodeMCU
• GND: Connected to GND of ESP8266 NodeMCU
• VCC: Connected to VIN of ESP8266 NodeMCU

Code

No code is provided for this circuit.

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This document provides a comprehensive overview of the circuit, including the components used and their interconnections. The ESP8266 NodeMCU microcontroller is interfaced with the HC-SR04 Ultrasonic Sensor to measure distances, with specific pins connected as detailed above.