This is such a helpful video thank you so much. I had a question though, at 5:53 you said the 12V power supply can supply more than the 1A current the Arduino can supply, but the specs on the power supply you used showed the Output as 12V, 1A. So we're not getting more than 1A through the system?? Im confused, did I misunderstand?
If I showed a 1a supply and caused confusion then apologies! I was working with what I have on hand. But the important takeaway is that since the Arduino isn't supplying the power, you are not constrained to a 1A supply.
Great Video! But I'm curious if it's safely that the 12V adapter connect to the Arduino VIN pin. Because the voltage provided by the 12V adapter will be bigger than 12V. This is more than the maximum allowed.
Sorry I'm not sure if I follow. The 12v adapter will provide 12v. You do need to make sure that your Arduino model can accept 12v, but most will happily accept that and more on vin. Read the specs for yours and choose an appropriate supply.
@@yuean6004 that should be fine. The Arduino site lists 7-12V for many models, but the datasheets show a higher voltage tolerance. For example Uno Rev 3 is 20V max, while the Nano is 15V. docs.arduino.cc/resources/datasheets/A000066-datasheet.pdf docs.arduino.cc/resources/datasheets/A000005-datasheet.pdf So there is definitely leeway. And designers of Arduino would definitely expect people to be using power supplies that aren't exactly dead on 12V. Hope that helps!
@@MattInglot Thank you for your reply. I'm actually working on a project. Using a 12V adapter to power both arduino and 12V LED strip. I think using a buck converter and power the arduino on the 5V pin might be a more reliable solution.
Great video! I have a question regarding multiple power supplies: so if I'm using a 11.1V supply to power a solenoid (w/ a mosfet), can I use a 9V battery to power the arduino/electronics via the Vin? The video made it seem like you cannot do this unless the supply for the arduino is exactly 5V
Absolutely but i think you might be confusing vin and 5v pins :) 5v is the one that has to be exactly 5v if you are using it to power the Arduino. You would hook up the 9v battery to vin, which allows the arduinos voltage regulator to regulate it down to 5v. Just make sure to connect the grounds of the battery and the 11.1v supply since you are using two different power sources (unless they are electrically isolated which I'm guessing is not the case here). Also what is the 11.1v supply? That sounds suspiciously like a lipo battery. You could easily use it to power the arduino as well.
Also yes please create a video about battery powered projects and selecting the correct battery for your requirements
Using 2 power supplies was very confusing, this video was exactly what I needed, thank you so much!
@@discreet_boson really glad to hear!
Can you make a loud siren for a burglar alarm using the uno?
This is such a helpful video thank you so much.
I had a question though, at 5:53 you said the 12V power supply can supply more than the 1A current the Arduino can supply, but the specs on the power supply you used showed the Output as 12V, 1A. So we're not getting more than 1A through the system?? Im confused, did I misunderstand?
If I showed a 1a supply and caused confusion then apologies! I was working with what I have on hand. But the important takeaway is that since the Arduino isn't supplying the power, you are not constrained to a 1A supply.
Great Video! But I'm curious if it's safely that the 12V adapter connect to the Arduino VIN pin. Because the voltage provided by the 12V adapter will be bigger than 12V. This is more than the maximum allowed.
Sorry I'm not sure if I follow. The 12v adapter will provide 12v. You do need to make sure that your Arduino model can accept 12v, but most will happily accept that and more on vin. Read the specs for yours and choose an appropriate supply.
@MattInglot I used a multimeter to measure the output voltage of the 12V adapter and found that it was 12.xxV
@@yuean6004 that should be fine. The Arduino site lists 7-12V for many models, but the datasheets show a higher voltage tolerance. For example Uno Rev 3 is 20V max, while the Nano is 15V.
docs.arduino.cc/resources/datasheets/A000066-datasheet.pdf
docs.arduino.cc/resources/datasheets/A000005-datasheet.pdf
So there is definitely leeway. And designers of Arduino would definitely expect people to be using power supplies that aren't exactly dead on 12V. Hope that helps!
@@MattInglot Thank you for your reply. I'm actually working on a project. Using a 12V adapter to power both arduino and 12V LED strip. I think using a buck converter and power the arduino on the 5V pin might be a more reliable solution.
Great video! I have a question regarding multiple power supplies: so if I'm using a 11.1V supply to power a solenoid (w/ a mosfet), can I use a 9V battery to power the arduino/electronics via the Vin? The video made it seem like you cannot do this unless the supply for the arduino is exactly 5V
Absolutely but i think you might be confusing vin and 5v pins :) 5v is the one that has to be exactly 5v if you are using it to power the Arduino. You would hook up the 9v battery to vin, which allows the arduinos voltage regulator to regulate it down to 5v. Just make sure to connect the grounds of the battery and the 11.1v supply since you are using two different power sources (unless they are electrically isolated which I'm guessing is not the case here).
Also what is the 11.1v supply? That sounds suspiciously like a lipo battery. You could easily use it to power the arduino as well.
I have a project and I’m looking for someone to prototype something. Do you do this type of work?
Appreciate it but have my hands full with my own projects. Good luck though!