One Wire Digital Temperature. DS18B20 + Arduino




I know… you are probably thinking “Another Thermometer! How many do you need to cover?” – Well… All of them. But really, they all have something different to offer. For instance this guy, the DS18B20, has a unique serial-number sent with it’s data, so if you needed to have 50 of these on one bus, you could and still know exactly where the reading came from. And… It’s digital serial bus it uses to transmit the date is just one wire.One Wire Digital Temperature. DS18B20 + Arduino




For this tutorial we will be using just one of them, and our code will only support the one. So if you need to read from a few or a lot of these, contact us in the forum and we can help you out. There is also a good amount of code out there for using a bunch of these at once, but no examples of just the one.

Hooking it up

This is by far one of the more simple digital sensors to hookup. Aside from power and ground, it has a single digital signal pin that we will be connecting to digital pin 2 on our arduino. It also requires a 4.7k pull-up resistor between the signal and power pin as shown in the illustration. (I tried the internal pull-ups on the arduino but it did not work)

There is a way this sensor can be hooked up with just 2 wires (no power), but it slows the code down, so I decided not to go that way.

Schematic One Wire Digital Temperature. DS18B20 + Arduino

For more detail: One Wire Digital Temperature. DS18B20 + Arduino

READ  Better LED as light sensor

JLCPCB – Prototype 10 PCBs for $2 + 2 days Lead Time
China’s Largest PCB Prototype Enterprise, 300,000+ Customers & 10,000+ Online Orders Per Day
Inside a huge PCB factory: https://www.youtube.com/watch?v=_XCznQFV-Mw




This Post / Project can also be found using search terms:

  • https://yandex ru/clck/jsredir?from=yandex ru;search;web;;&text=&etext=1824 MlAf4aeW93rFxWl03AexTGyDPworoF6wam6m5cun7Eq5ChOkmtDqsUWpj03IXFfL be03003fb4933f54f1c810d933a3a03f335bf0bf&uuid=&state=_BLhILn4SxNIvvL0W45KSic66uCIg23qh8iRG98qeIXme

Leave a Comment

*
= 3 + 4

(Spamcheck Enabled)

Read previous post:
Placa de desenvolvimento para o ESP8266
nodeLHC – Placa de desenvolvimento para o ESP8266

Durante as oficinas semanais de IoT no LHC, vimos que algumas placas de desenvolvimento utilizando o ESP8266 estavam surgindo, como...

Close
Scroll to top