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Questions tagged [temperature-sensor]

A component which measures heat.

6
votes
2answers
18k views

The use of 4.7kOhm resistor with DS18B20 temperature sensor [closed]

I was using a temperature sensor DS18B20 with Arduino. I've read that you should connect the digital input line and the 5V line with a 4.7kOhm resistor - like in the picture. Can someone explain ...
1
vote
1answer
5k views

DHT11 data in Arduino UNO to Firebase through ESP8266

Hello Good Day to Everyone. I have a project where I need to send DHT11 sensor data to a Firebase database using both Arduino UNO and Esp8266 esp-01 wifi module. Both of them must work together to ...
2
votes
3answers
549 views

Problems coding a 12 pin 7 segment display and grove temperature sensor with Arduino Uno

I am trying to code my 12 pin seven segment display to display the temperature from my grove temperature sensor. I am new to this and I have been struggling, so if anyone could help that would be much ...
1
vote
0answers
1k views

Grove temperature sensor with Arduino Yun

I try to test Grove - Infrared Temperature Sensor on Arduino Yun with the sample code but it does not work. In the console it shows that the object temperature is out of range all the time. However, ...
1
vote
1answer
145 views

How do I select Sensor using chip 74HC138 on Wemos D1 Mini?

I have a project for my graduate degree. It's about Monitoring Temperature and Humidity using Message Queuing Telemetry Transport on Serial NodeJS. To get sensor data to Wemos D1 Mini and NodeJS had ...
1
vote
1answer
142 views

Data loging while browsing a menu on LCD shield

I'm new in arduino and not particularly awaken when it comes to code ;) . I'm developing a device SD logging Temperatures from 2 thermocouple . Hardware works well and I'm now trying to refine use of ...
0
votes
3answers
4k views

DHT11 with Mysql

I need help to record databаse from dht11 sensor to mysql server. this is my code: #include <DHT.h> #include <Ethernet.h> #include <SPI.h> byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, ...
0
votes
1answer
828 views

DS18B20 - Temperature a bit off?

I'm trying to measure the temperature using a DS18B20 sensor. I'm using the DallasTemperature and OneWire Libraries. The sensor is connect in Pin 10 with a 4k7 resistor between VDD and DQ (actually I'...