power testing - are the connectors in the right place?

Other Hardware General Electronics
1

Hello,

Apologies for the newbie question, but I wanted to check that this was the correct wiring for the arduino board shown in the picture below?

The red is on the left and the black is on the right going into the ground - should the read be in the 5v section?

I am testing to see if the transmitter is at fault or if it's something else. So I figured using an arduino board would be a neat way to test this.

Please advise - as I don't want to blow anything up :wink:

Thanks in advance

arduino.JPG
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2

You either power the board from USB, or by a regulated 5.0V supply to the 5V
pin or by a supply of between 7 and 12V to the Vin pin or the power jack. In all cases GND is the
negative.

Feeding more than 5V to the 5V pin is fatal, as is getting the polarity wrong...
(except on the power jack which has a series diode)

3

Thank you for your reply.

Apologies but you'll have to talk to me in noob terms. :slight_smile:

So if I've understood you correctly, is this now correct?

IMG_4081.jpeg
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4

No. VIN is the DC from the barrel jack connecter after it goes thru the reverse polarity protection diode.
5V is the output from the 5V regulator (and 3.3V from the 3.3V regulator).
You can see this on the Uno schematic

(or whichever Arduino you are using, see the Products page).