Design with MKE-S15 DS18B20 Waterproof Temperature Sensor in Cirkit DesignerThe MKE-S15 DS18B20 is a waterproof digital temperature sensor designed for precise and reliable temperature measurements in a wide range of environments. Encased in a stainless steel probe, it is ideal for applications requiring durability and resistance to moisture, such as outdoor weather monitoring, liquid temperature measurement, and industrial processes.
This sensor communicates using the 1-Wire protocol, allowing multiple sensors to be connected to a single data line. Its compact design and waterproof capabilities make it a versatile choice for both hobbyist and professional projects.
This circuit uses an Arduino UNO to read temperature data from a DS18B20 waterproof temperature sensor and monitor voltage and current using an INA219 sensor. The Arduino is powered by a 3.7V battery and communicates with the INA219 via I2C, while the DS18B20 sensor is connected to a digital pin with a pull-up resistor.
Open Project in Cirkit Designer
This circuit features an ESP8266 NodeMCU microcontroller connected to a DS18B20 temperature sensor. The sensor's data line (DQ) is connected to the D2 pin of the NodeMCU through a 4.7k ohm pull-up resistor, which is a common configuration for one-wire temperature sensors. The sensor is powered by the 3.3V supply from the NodeMCU, and both the sensor and the NodeMCU share a common ground.
Open Project in Cirkit Designer
This circuit is a smart water bottle monitoring system that uses an Arduino UNO to read data from various sensors, including a temperature sensor, TDS sensor, ultrasonic sensor, and reed switch. The data is displayed on an OLED screen and transmitted wirelessly via an ESP8266 module, allowing remote monitoring of water quality, temperature, level, and lid status.
Open Project in Cirkit Designer
This circuit is a weather monitoring system that uses an ESP32 microcontroller to read temperature data from a DS18B20 sensor and pressure data from a BME280 sensor. The data is displayed on a 20x4 I2C LCD panel, and the system can communicate via a SIM800L module. A piezo buzzer is included for audible alerts, and the entire system is powered by a 5V battery.
Open Project in Cirkit DesignerThe MKE-S15 DS18B20 sensor typically has three wires for connection:
| Wire Color | Pin Name | Description |
|---|---|---|
| Red | VCC | Power supply (3.0V to 5.5V) |
| Yellow | DATA | 1-Wire data line for communication |
| Black | GND | Ground connection |
Below is an example of how to connect the MKE-S15 DS18B20 to an Arduino UNO:
The following code demonstrates how to read temperature data from the DS18B20 sensor using the Arduino IDE. This example uses the DallasTemperature and OneWire libraries, which must be installed via the Arduino Library Manager.
#include <OneWire.h>
#include <DallasTemperature.h>
// Pin connected to the DATA line of the DS18B20 sensor
#define ONE_WIRE_BUS 2
// Initialize the OneWire and DallasTemperature libraries
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
void setup() {
Serial.begin(9600); // Start serial communication at 9600 baud
sensors.begin(); // Initialize the DS18B20 sensor
Serial.println("DS18B20 Temperature Sensor Initialized");
}
void loop() {
sensors.requestTemperatures(); // Request temperature readings
float temperatureC = sensors.getTempCByIndex(0); // Get temperature in Celsius
// Check if the reading is valid
if (temperatureC != DEVICE_DISCONNECTED_C) {
Serial.print("Temperature: ");
Serial.print(temperatureC);
Serial.println(" °C");
} else {
Serial.println("Error: Sensor not detected");
}
delay(1000); // Wait 1 second before the next reading
}
No Temperature Reading:
Incorrect Temperature Values:
Sensor Not Detected:
Intermittent Readings:
Q: Can I connect multiple DS18B20 sensors to the same data line?
A: Yes, the 1-Wire protocol supports multiple sensors on a single data line. Each sensor has a unique 64-bit address for identification.
Q: Is the sensor safe for use in food-grade applications?
A: While the stainless steel probe is waterproof, confirm with the manufacturer if it meets food-grade standards for your specific use case.
Q: Can I extend the cable length?
A: Yes, but long cables may require a lower pull-up resistor value (e.g., 2.2kΩ) and shielded cables to reduce noise.
Q: What happens if the sensor is exposed to temperatures beyond its range?
A: Prolonged exposure to extreme temperatures may damage the sensor or result in inaccurate readings. Always operate within the specified range.
This concludes the documentation for the MKE-S15 DS18B20 Waterproof Temperature Sensor.