Supplying Arduino and circuit with power, Question!

Community General Discussions
1

circuit_transmitter_side.jpg (1029184Bytes)

hello guys,

actully till now i never work with external power for arduino other than the PC usb connector. It's time now to give it external power but i need please help if my circuit is getting power the right way :

first a image is attached for the circuit

so i need please to know if i am giving my circuit the right power in the right way ? and for arduino the right power ?

and thanks for all in advance

2

Nope

These are the problems I see;
  • Two tact switches are not connected to anything on one side
  • Two resistors on the left are connected to pwr and gnd, nothing else
  • The pot is connected to 12v, then the ADC
  • The 12v supply rails are shorted directly in the center (x-shaped thing)
  • All LEDs are on the 12v supply  
  • 4th LED from the left is not connected
  • Tact switches need to be turned 90 degrees
  • No grounds shared between 12v circuit and arduino
  • 9v batteries should not be used

Other than that, it looks ok.

3

i guess the problem might be

i guess the problem might be in the drawing because my actual circuit works great, ok so my questions based on the drawing are :

-the x in the middle why is it a shortcut ? because what i wanted is the make the 2 halfs of the bread board be like one line ?

-about no connection between ground and arduino so if i supply the arduino with power other than the circuit i must connect the ground to arduino ?

-about the pot, i can’t connected to 12V (10K pot) and why ? what is ADC (i will look at it but a simple explanation will be usefull if possble please :slight_smile: )?

-the connection on 4th led is not a problem because what i meant is that it’s connected on actual board

- about the 9V battary why it is not necessary ? because here i am supplying power to arduino ather than the 12 V, so this can’t be possible ? you mean i must connect the 12V to the pin of VCC ? is it a better way ?

 

and thanks a lot Chris for your time i really appreciate it and it’s been a lot of help :slight_smile:

 

4

OK

 

  • If you circuit works, then it does not match the picture. If real-life connections don’t match the picture, the picture and the question are worthless.
  • If your set up works, why are you asking if it is right?
  • The outside power rails on most breadboards are connected (yours may not). However, I can see no reason why you would want to reverse polarity right in the middle of the board --you are setting yourself up for mistakes
  • All grounds must be connected together, period
  • What is ADC!!! Really? It is an analog input --and you should know this by now. --If you dont, you should have googled it, or you should have listened the last 5 times we discussed it. 
  • ADC inputs (and digital ones too) can input a maxium of 5 volts (or 3.3v is your chip runs at that voltage). Right now, you have the potential of shoving 12v into your chip and frying it. 
  • 4th LED --Again, if the picture does not match what you are doing, it is worthless to ask questions about it and you are wasting people’s (my) time
  • Power to the arduino is needed to power the board. I did not say you did not need the 9v battery, I said it should not be used. A 9v battery can not put out the current needed. It will probably work to power the brain by itself, but it will not power any accessories. It is simply bad practice to use 9v batteries

For the record, this “what is an ADC” thing really pisses me off. Also, I am equally angry that I wasted my time answering a question about something that is working properly. 

This is starting to get very old, dude, and I am really starting to think you really are a troll and get off on wasting peoples time. 

DO NOT contact me directly again to apologize or try to get better answers. I am running out of patience.

5

no man really i am not

no man really i am not here to waste any bodies time, maybe my way of asking wasn’t right, what i needed to know is about the power thing which means : is supplying power to arduino directly by a 9V (i guess it’s maximum same as PC ?) is right ?

and i needed to know if supplying my circuit with a 12V power is it right ?

by the way about the X in the middle it’s because i am wiring the LEDs ground to the line inside but if u see from the other extremity the + is inside so that’s why i had to reverse it so i put X

6

You didn’t listen to a word we said…

You refuse to google anything, you refuse to listen to any advice, you have wasted my time.

I am done with you. You will not receive my help any more.

Maybe other people are stupid enough to go in circles with you, but I am done.

7

i do use google but many

i do use google but many times i don’t get the answer i really need :S