Arduino Tutorial: How to make an analog Thermometer with Arduino a DS18B20 and an analog Voltmeter

In this Arduino Tutorial we are going to modify this analog Voltmeter and convert into an Analog Thermometer using Arduino and a DS18B20 temperature sensor. Without any further delay, let's get started!

Today we are going to learn how to use this analog voltmeter with Arduino and make it show the temperature instead of the voltage. As you can see, in this modified voltmeter, we can see the temperature in degrees Celsius. The temperature is measured by this digital sensor, a DS18B20 and it is then displayed on the voltmeter. I really like analog dials like this one, because they give a vintage look to the projects. Let's now see how to achieve that result.

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[republicofsandles]

I was on the bus, so watched this video without sound.
As soon as I saw that you were using a voltage meter this video began to make crystal sense.
That was really pragmatic engineering, and it was quite impressive.

[AhCup]

As a noob, I really like this project. It's simple enough to understand yet I feels like I learned something new. Can't wait the video you are going upgrade this project.

[Poult]

I love analog displays for the nostalgia, right back to my childhood when my father used to build stuff. I now mainly use the small OLED displays to mimic analog ones, so customisable but not so nostalgic. Love the idea of the yellow LEDs! Too many people use blue. Not so good really and terrible at night.

[healthcoachchris]

I love the analog meters - old school, like me :)

[crashwg]

Can you compare the current requirement of this method vs other, digital display methods? Perhaps your favorite graphical screens as well as character LCDs.

[MichaelDisney]

I've had an urge to build a mains frequency monitor, using an analogue gauge as an indicator. It was to test the idea that power companies have to make good on a daily frequency tally and make up for frequency drops during peak load times. Thanks for your videos and circuit ideas!

[interlinkknight]

looks like that gauge is linear. All gauges I've found are not linear, meaning that each step of the 255 values move different amount depending if the gauge is on the left or right. did you test if your gauge is trully linear?

[holetoanotheruniverse]

Wow! I have so many ideas for projects we can build with this voltmeter! For example you can use it to display your data from your weather station, like humidity, and pressure! Or you can build a vu-meter out of a voltmeter. Maybe you can even build an analog clock. have to buy a few of these!

[harshitgupta]

Can you make any project relating to gesture controlling using ADXL-335 or any other accelerometers???

[AndriusKamarauskas]

i planning to make wattmeter on my diy pc to show energy use in real time. Inside will be lipo charger and few 12v(high amperage) outputs for other devices

[avejst]

I like analog meters. often they are more easy to "decode" at a distance

[ValseInstrumentalist]

Even though they take more effort to set up, I think I prefer digital displays. There's just something so fun about creating a custom interface and having it appear on a mini OLED or TFT LCD. I recently got a Raspberry Pi e-ink display which continues to be a fun challenge.

[PixelDemon]

Hello Sir,
first of all thanks for your great channel. You are an excellent teacher! Funny enough i received 2 analog Voltmeters yesterday. They are round and i want to build a vintage looking clock with them, one displaying hours and the other one showing the minutes. I have not figured out yet how to calibrate them since they both show about 4.7 volts at full PWM. Do you have any ideas?

Keep up the great work, all the best from Germany!

[napierjohn]

I am just ow learning to code arduino, but your project will help me with one project I have been thinking of. You know you can go to an auto junkyard and get an analog instrument panel from many cars for like $15. I think it would be cool to hook up several sensors and an arduino so I can monitor things using the instrument panel. Have it on my desk.
Thanks for your lesson.

[AnsyCrofts]

One thing about these new-fangled digital meters - if you're measuring current, I love to have my trusty 40-year-old AVO-8 in series, to measure current.
If it drops into (e.g., an interrupt routine), you see it clearly, rather than trying to unscramble the mularkey of a digital meter.

[WhoCaresWinsAgain]

Hi Nick, nice simple project. I can't see the promised link for the photoshop file for the panel meter replacement dial? I made a similar "analog" type project using two meters and a Real Time Clock one meter is o-12 hours the other 0-60 minutes. Looks quite retro in a nice home designed laser cut case. Regards Nick (UK)

[mirkomueller]

I have an idea for another project:
I discovered problems using an arduino driving a 12x12 WS2812 LED Matrix AND (at the same time) trying to use the same arduino for accepting remote control commands. The animations did'nt run smoothly anymore and the remote control codes were not interpreted correctly. So i had to forget about controlling the arduino via remote control. Is there any way to solve this problem maybe by using two (or more) arduino's working somehow together when there is more than one time critic routine that has to be taken care of?

[adrianrawlings]

Great project. I've been looking for something to build as a gift for my son and this perfect. Once the circuit is done there is no limit to the case design. Although could you add the code so it can display minus zero temperatures?

[MrBobWareham]

very nice it looks good I am going to make one with an old dc volt meter, thanks for the video.

[ShyamKumar-bybm]

can you suggest a microcontroller board like UNO which has 5v gpio output with ESP8266 so I can send commands using MQTT