Common Ground - Demonstration - Simply Put

[@uku4171]

Thank you. I still don't understand the physics and theory behind it, but it solved my practical problem

[@chrisguyatt]

Very well put, thank you very much for taking the time to explain this.

[@danialothman]

This was simply put 😄 really helped with visualizing what happens.

[@michaels8297]

beautiful explanation, cant believe this doesnt have thousands of views.

[@HOboXWARRIOR]

Late to the party, but this is exactly what I was looking for, great stuff!

[@TheSudouser]

Thanks so much, this made it much more concrete for me. I am trying to do BJT transistor Characteristics curves with voltage reading sensors but because I didn't have a common ground, it wasn't measuring the correct voltage. I appreciate your explanation!

[@riskytime]

May your electrons be blessed and your ideas thermodynamically instilled with Mother Earth's bountiful energies, thank you friend 🤝

[@AlexP-zx1yo]

I have a problem when I'm using arduino to read from 8 devices powerd individually.i have connected them all but the serial connection still fails on my laptop

[@damny0utoobe]

Perfect explanation of common ground

[@bonger975]

Thank you just understood ground

[@calebmorand4604]

Nice explanation! With a common ground between multiple DC power supplies, what would happen if a short circuit happens on one of the power supplies? Would it effect the other power supplies referenced to the common ground of the setup? Thanks! Also can I reference common ground between multiple DC power supplies of different amperage and voltage?

[@FourthWayRanch]

I've got a function on a microcontroller works by connecting a pin to ground. I want to do that switching with a voice recog module that outputs a 3.3V signal. how can we do it without a relay? transistor maybe?

[@jhg8464]

Being a math nerd I noticed the time is tau or 2 pi

[@danthefrog11]

What if the other power supply is running at a higher voltage than the arduino? Does that change how we create a common ground?

[@HappyHermitt]

If I'm using a separate power supply for a servo controlled by Arduino, do I combine the grounds to create a common ground.??

[@sia3540]

What is maximum voltage to ground rating of a power supply? How do I find it for a power?

[@jasonn5196]

thanks man

[@webdeveloperninja9220]

Makes sense thanks

[@abdus-salam]

what if we connect both positive as common ground?

[@simplyput2796]

That could work, but the problem is that circuits generally behave better (or misbehave less) if any variation (such as power-supply noise) is on the positive side. For your particular application, it might not matter and it could work just fine. But conceptually it's also a little unusual because the highest voltage in your system would be 0V and every actual voltage would be negative (according to the math). Physics doesn't care whether the humans involved consider the voltage positive or negative, but anyone else looking at your circuit diagram might.

[@abdus-salam]

@@simplyput2796 Thanks man

[@Zhak7]

Richard Stallman's brother

[@gilberttanui4376]

Transistor should have common ground as arduino current flows through base to emitter whereas same for collector VCC therefore transistor should share same ground

[@JushuaAbraham-sj2xl]

I was looking for this comment. the emitter is common between the input and output so it must be tied to the same ground .

[@tonysicily2687]

Awesome, you are a genius and an incredible teacher. I have been struggling getting multi power source projects to work, you have REALLY helped So, just to check, 5v is NOT 5v but rather it is 5V relative to Gnd, therefore in a multi power source project you need to to set a “common ref point” ie Common ground

[@johnostholm8820]

Thank you! This helped a lot! :)

[@markharrisllb]

That’s brilliant! I’m building the world's most over engineered lab power unit and I’m having difficulties working out my grounds, this has helped a lot. Your Pokemon poster made me smile, my ex's son has classic ASD and Pokemon is his 'thing'. That alone is worth a big thank you.

[@stevenrogersfineart4224]

Your information is so good I just wish you would eliminate the jump cuts. Stick to a script or just let the videos run. I feel like I've had too many espressos when I watch lol.

[@snugglesjuggler]

6:07 How the heck can a NPN transistor work without not having a common ground for Collector power source and Base power source? Yes I'm a newbie :)

[@trif169]

Noise is not an issue here because it's not 'measuring' with reference to the other power supply it is simply like a relay with 24VDC on the coil and your contacts switching a higher voltage.

[@JushuaAbraham-sj2xl]

I was looking for this comment. the emitter is common between the input and output so it must be tied to the same ground.

[@en_x]

Thank you, this was helpful.

[@josephbarron6899]

In all seriousness this a great simple explanation. Had a customer try to use a Milwaukee battery to change flash patterns on a light controller on a vehicle. Because it wasn’t common the the vehicle ground the pattern didn’t change.

[@AutodidactEngineer]

What happens if you short DC ground to earth? Will it spark?