ESP8266 ESP-01 DS18B20 Temperature Humidity Sensor Module Wireless Wifi - Image 1
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ESP8266 ESP-01 DS18B20 Temperature Humidity Sensor Module Wireless Wifi

Arduino UNO R3 Screw Terminal Adapter Module Board Proto Shield V1.0 Expansion
ESP8266 DHT22 AM2302 Temperature Humidity Sensor Wireless Module Wifi
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Description

Revamp Your Monitoring with the ESP8266 ESP-01 DS18B20 Wireless Temperature and Humidity Sensor Module

Experience the future of environmental data collection with our cutting-edge ESP8266 ESP-01 DS18B20 Temperature Humidity Sensor Module. Crafted with precision and innovation, this module offers unparalleled performance and seamless wireless connectivity. Here’s why it’s the ideal choice for modern temperature monitoring:

Innovative Design: 100% brand new and meticulously crafted for excellence. The module showcases an exquisite design that matches its high-quality performance.

Advanced Components: Powered by the ESP8266 ESP-01S as the master control and featuring the DS18B20 as the temperature sensor, this module ensures accurate and reliable data capture.

Wireless Connectivity: Seamlessly upload temperature data to your designated server using the ESP8266’s powerful wireless capabilities. Stay connected and informed, no matter where you are.

Versatile Power Supply: Operating voltage ranging from DC 3.7V to 12V, allowing for flexible power options, including compatibility with 3.7V lithium battery power supply.

Wide Temperature Range: Capture data even in extreme environments with the impressive measuring range of -55°C to +125°C. This module excels in providing accurate readings regardless of conditions.

Compact and Efficient: With dimensions of 25mm x 21mm (0.98in x 0.83in), this module’s compact size doesn’t compromise on performance. It’s designed for efficiency without sacrificing accuracy.

Enhanced Connectivity: Equipped with multiple data interface options, including UART, HSPI, I2C, I2S, and more, ensuring seamless communication with various devices.

Sturdy Build: Operate in demanding conditions confidently, thanks to its operating temperature range of -40°C to 125°C. This module is built to withstand challenges and deliver consistent results.

Secure Network Mode: Choose between station, softAP, or SoftAP station wireless network modes. Rest easy knowing that safety is a priority with WPA/WPA2 encryption options.

Package Contents: Your purchase includes 1PC of the ESP8266 ESP-01 Serial WIFI Wireless Transceiver DS18B20 Temperature Sensor Adapter. Please note that this does not include the ESP-01/s WiFi module; you can explore our store for comprehensive solutions.

Elevate your data collection capabilities with the ESP8266 ESP-01 DS18B20 Wireless Temperature and Humidity Sensor Module. Embrace the future of wireless monitoring and make informed decisions backed by accurate, real-time data. Get yours today and experience the difference first hand.

📌 Code Examples & Usage – DS18B20 Temperature Sensor Board for ESP-01 / ESP-01S

📋 Overview

This module is a DS18B20 digital temperature sensor carrier board designed to work with an ESP-01 or ESP-01S Wi-Fi module.

⚠ Important:
This product does NOT include an ESP8266.
You must plug in an ESP-01 or ESP-01S module for the board to function.

Once installed, it becomes a compact Wi-Fi temperature sensor node suitable for IoT projects.

⚙ Key Features

  • Sensor: DS18B20 (digital 1-Wire temperature sensor)

  • Compatible with: ESP-01 / ESP-01S

  • Wi-Fi provided by ESP-01 module

  • Digital temperature output (no ADC required)

  • Arduino IDE compatible

Ideal for:

  • Wi-Fi temperature monitoring

  • Home Assistant / MQTT sensors

  • Equipment temperature logging

  • Greenhouse & enclosure monitoring

⚠ IMPORTANT – Read Before Use

🚨 ESP-01 / ESP-01S NOT INCLUDED

🚨 3.3V ONLY

  • ESP-01 and DS18B20 are not 5V tolerant

  • Use a stable 3.3V supply (≥300mA recommended)

🚨 Limited GPIO

  • ESP-01 has only GPIO0 and GPIO2

  • Sensor data line is typically connected to GPIO2

📌 Power instability is the #1 cause of ESP-01 resets and Wi-Fi dropouts.

🔌 ESP-01 Installation

  1. Align the ESP-01 / ESP-01S with the socket

  2. Insert gently (do not force)

  3. Ensure antenna orientation is clear

❌ Do not hot-plug the ESP-01 while powered

🔌 Power Requirements

Parameter Requirement
Voltage 3.3V
Current Up to 300mA (Wi-Fi bursts)
5V tolerant ❌ No

✅ Recommended:

  • ESP-01 power adapter

  • Buck converter or LDO (≥300mA)

  • Good decoupling (10–100µF nearby)

🛠 Arduino IDE Setup (ESP-01)

1️⃣ Install ESP8266 Board Support

Arduino IDE → File → Preferences
Add to Additional Boards Manager URLs:

https://arduino.esp8266.com/stable/package_esp8266com_index.json

Then:

  • Tools → Board → Boards Manager

  • Install esp8266 by ESP8266 Community

2️⃣ Board Settings

  • Board: Generic ESP8266 Module

  • Flash Mode: DIO

  • Flash Size: 1M (no SPIFFS)

  • CPU Frequency: 80 MHz

  • Upload Speed: 115200

📦 Library Installation

Install these libraries via Arduino Library Manager:

  • OneWire

  • DallasTemperature

🧪 Example – Read DS18B20 Temperature (ESP-01)

On most ESP-01 carrier boards:

  • DS18B20 data pin is wired to GPIO2

#include <ESP8266WiFi.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 2 // GPIO2 on ESP-01

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

void setup() {
Serial.begin(115200);
sensors.begin();
Serial.println("ESP-01 + DS18B20 ready");
}

void loop() {
sensors.requestTemperatures();
float tempC = sensors.getTempCByIndex(0);

if (tempC == DEVICE_DISCONNECTED_C) {
Serial.println("Sensor not detected");
} else {
Serial.print("Temperature: ");
Serial.print(tempC, 2);
Serial.println(" °C");
}

delay(2000);
}

🌐 Example – Wi-Fi Web Page (Temperature Display)

#include <ESP8266WiFi.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 2

const char* ssid = "YOUR_WIFI";
const char* password = "YOUR_PASSWORD";

WiFiServer server(80);
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

void setup() {
Serial.begin(115200);
sensors.begin();

WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) delay(300);

server.begin();
}

void loop() {
WiFiClient client = server.available();
if (!client) return;

sensors.requestTemperatures();
float tempC = sensors.getTempCByIndex(0);

client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println();
client.println("<h2>ESP-01 DS18B20 Temperature</h2>");

if (tempC != DEVICE_DISCONNECTED_C) {
client.print("Temperature: ");
client.print(tempC, 2);
client.println(" &deg;C");
} else {
client.println("Sensor error");
}

client.stop();
delay(2000);
}

🌡 Why DS18B20?

✔ Digital sensor (no calibration drift)
✔ Excellent noise immunity
✔ Works well with long cables
✔ Better reliability than DHT-style sensors

📌 Measures temperature only (no humidity).

🧠 Common Issues & Fixes

Issue Cause Fix
No readings Wrong GPIO Use GPIO2
ESP resets Weak power Better 3.3V supply
Upload fails GPIO0 state Ensure GPIO0 HIGH at run
Sensor missing Loose ESP-01 Reseat module

Additional information

Weight 30 g
Dimensions 260 × 160 × 20 mm

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