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ESP8266 ESP-01S + DS18B20 WiFi Temperature Sensor Module — Smart Home IoT, Arduino
ESP8266 ESP-01S + DS18B20 WiFi Temperature Sensor Module Smart Home IoT, Arduino
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ESP8266 ESP-01S + DS18B20 WiFi Temperature Sensor Module — Smart Home IoT
This module combines the ESP8266 ESP-01S WiFi module with a DS18B20 digital temperature sensor on a single compact board, providing a ready-to-use WiFi-connected temperature sensing solution. The DS18B20 communicates over the 1-Wire protocol and delivers ±0.5°C accurate temperature readings from -55°C to +125°C. Program via Arduino IDE, MicroPython, or NodeMCU firmware for instant integration into smart home, HVAC monitoring, and IoT data logging applications.
Key Specifications
| Parameter | Value |
|---|---|
| WiFi Module | ESP8266 ESP-01S |
| Temperature Sensor | DS18B20 (1-Wire digital) |
| Temperature Range | -55°C to +125°C |
| Temperature Accuracy | ±0.5°C (-10°C to +85°C) |
| Resolution | 9–12 bit (configurable) |
| WiFi Standard | 802.11 b/g/n, 2.4GHz |
| Supply Voltage | 3.3V |
| Interface | UART (for programming), 1-Wire (DS18B20) |
| Flash Memory | 1MB (ESP-01S) |
Why Choose This ESP-01S + DS18B20 Module?
- All-in-one WiFi + sensor — no separate wiring between ESP8266 and DS18B20 needed
- ±0.5°C accuracy — calibrated digital output, no ADC or analog calibration required
- -55°C to +125°C range — suitable for freezer monitoring, HVAC, and outdoor applications
- Arduino IDE compatible — program with familiar Arduino syntax using ESP8266 board package
- Compact form factor — small enough for enclosure-mounted IoT sensor nodes
Compatible With / Supported Platforms
- Arduino IDE: ESP8266 board package + DallasTemperature + OneWire libraries
- MicroPython: onewire and ds18x20 modules (built-in)
- NodeMCU Lua: ds18b20 module
- Home Assistant: ESPHome integration for direct smart home dashboard
- MQTT: Publish temperature to Mosquitto broker for Node-RED or Home Assistant
- Blynk / ThingSpeak: Cloud IoT dashboard integration
Frequently Asked Questions
Q: How do I program the ESP-01S with Arduino IDE?
A: Install the ESP8266 board package in Arduino IDE (Board Manager URL: http://arduino.esp8266.com/stable/package_esp8266com_index.json). Select “Generic ESP8266 Module”, connect via a USB-to-UART adapter (CH340 or CP2102) with GPIO0 pulled LOW for flash mode. Upload your sketch, then release GPIO0 for normal boot.
Q: Can I read the DS18B20 temperature over WiFi without a separate microcontroller?
A: Yes — that is the purpose of this module. The ESP8266 reads the DS18B20 via 1-Wire and sends the data over WiFi to an MQTT broker, HTTP server, or cloud platform. No additional MCU is needed.
Q: What is the difference between ESP-01 and ESP-01S?
A: ESP-01S is the improved version with 1MB flash (vs 512KB on original ESP-01), a blue LED on GPIO2 instead of GPIO1, and lower power consumption. ESP-01S is the recommended version for new projects due to more flash space for OTA updates and larger sketches.
Package Contents
- 1× ESP8266 ESP-01S + DS18B20 WiFi Temperature Sensor Module
- ★Product Description
- ★About us
- ★Custom cable
ESP8266 ESP-01S + DS18B20 WiFi Temperature Sensor Module — Smart Home IoT
This module combines the ESP8266 ESP-01S WiFi module with a DS18B20 digital temperature sensor on a single compact board, providing a ready-to-use WiFi-connected temperature sensing solution. The DS18B20 communicates over the 1-Wire protocol and delivers ±0.5°C accurate temperature readings from -55°C to +125°C. Program via Arduino IDE, MicroPython, or NodeMCU firmware for instant integration into smart home, HVAC monitoring, and IoT data logging applications.
Key Specifications
| Parameter | Value |
|---|---|
| WiFi Module | ESP8266 ESP-01S |
| Temperature Sensor | DS18B20 (1-Wire digital) |
| Temperature Range | -55°C to +125°C |
| Temperature Accuracy | ±0.5°C (-10°C to +85°C) |
| Resolution | 9–12 bit (configurable) |
| WiFi Standard | 802.11 b/g/n, 2.4GHz |
| Supply Voltage | 3.3V |
| Interface | UART (for programming), 1-Wire (DS18B20) |
| Flash Memory | 1MB (ESP-01S) |
Why Choose This ESP-01S + DS18B20 Module?
- All-in-one WiFi + sensor — no separate wiring between ESP8266 and DS18B20 needed
- ±0.5°C accuracy — calibrated digital output, no ADC or analog calibration required
- -55°C to +125°C range — suitable for freezer monitoring, HVAC, and outdoor applications
- Arduino IDE compatible — program with familiar Arduino syntax using ESP8266 board package
- Compact form factor — small enough for enclosure-mounted IoT sensor nodes
Compatible With / Supported Platforms
- Arduino IDE: ESP8266 board package + DallasTemperature + OneWire libraries
- MicroPython: onewire and ds18x20 modules (built-in)
- NodeMCU Lua: ds18b20 module
- Home Assistant: ESPHome integration for direct smart home dashboard
- MQTT: Publish temperature to Mosquitto broker for Node-RED or Home Assistant
- Blynk / ThingSpeak: Cloud IoT dashboard integration
Frequently Asked Questions
Q: How do I program the ESP-01S with Arduino IDE?
A: Install the ESP8266 board package in Arduino IDE (Board Manager URL: http://arduino.esp8266.com/stable/package_esp8266com_index.json). Select “Generic ESP8266 Module”, connect via a USB-to-UART adapter (CH340 or CP2102) with GPIO0 pulled LOW for flash mode. Upload your sketch, then release GPIO0 for normal boot.
Q: Can I read the DS18B20 temperature over WiFi without a separate microcontroller?
A: Yes — that is the purpose of this module. The ESP8266 reads the DS18B20 via 1-Wire and sends the data over WiFi to an MQTT broker, HTTP server, or cloud platform. No additional MCU is needed.
Q: What is the difference between ESP-01 and ESP-01S?
A: ESP-01S is the improved version with 1MB flash (vs 512KB on original ESP-01), a blue LED on GPIO2 instead of GPIO1, and lower power consumption. ESP-01S is the recommended version for new projects due to more flash space for OTA updates and larger sketches.
Package Contents
- 1× ESP8266 ESP-01S + DS18B20 WiFi Temperature Sensor Module
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