Hi,
I have just got myself an arduino budget pack and hence didn't get a power adapter (conscious decision as I am in Australia and wanted to get a local one.) I was wondering what the accepted voltages for the board through the DC pin are. Is it a range like 5v - 9v or is it a set 9v?
Cheers
Arduino external power source voltage
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Please be positive and constructive with your questions and comments.
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- Posts: 49
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Re: Arduino external power source voltage
Hello from Brisbane
7~12 volts DC is fine, 2.1mm positive tip.
Have fun with Arduino!
7~12 volts DC is fine, 2.1mm positive tip.
Have fun with Arduino!
- pyta101
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- Joined: Mon Jun 07, 2010 12:25 am
Re: Arduino external power source voltage
Thanks for the help!
A trip to jaycar is in order.
And hello from Tas
A trip to jaycar is in order.
And hello from Tas
- pyta101
- Posts: 13
- Joined: Mon Jun 07, 2010 12:25 am
Re: Arduino external power source voltage
Just a quick question is someone can answer me.
I bought a 9v 800mA max regulated power adaptor but whenever I hook it up the arduino gets power but what I assume is the power regulator gets burning hot within seconds and I am not too keen to leave it running like that. Am I doing something wrong or is there an issue with the adaptor or arduino board?
Cheers
I bought a 9v 800mA max regulated power adaptor but whenever I hook it up the arduino gets power but what I assume is the power regulator gets burning hot within seconds and I am not too keen to leave it running like that. Am I doing something wrong or is there an issue with the adaptor or arduino board?
Cheers
- adafruit_support_bill
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Re: Arduino external power source voltage
Could be a short somewhere. What else is connected to your Arduino?
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- Posts: 49
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Re: Arduino external power source voltage
Do you have a multimeter? If so, check the polarity and voltage at the end of the DC plug. You want centre-positive.pyta101 wrote:Just a quick question is someone can answer me.
I bought a 9v 800mA max regulated power adaptor but whenever I hook it up the arduino gets power but what I assume is the power regulator gets burning hot within seconds and I am not too keen to leave it running like that. Am I doing something wrong or is there an issue with the adaptor or arduino board?
Cheers
Is it from Jaycar? What's the catalogue number?
- pyta101
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- Joined: Mon Jun 07, 2010 12:25 am
Re: Arduino external power source voltage
It had an breadboarded LCD attatched to it, so it could have been a short. Could it have been the led backlight drawing too much current? I dont have a datasheet for the lcd. How much current can the 5v line of the arduino put out?
I have had the arduino plugged into the adaptor for about 10 mins now and it hasnt got hot so at least its nothing wrong with the board?
Cheers
I have had the arduino plugged into the adaptor for about 10 mins now and it hasnt got hot so at least its nothing wrong with the board?
Cheers
- pyta101
- Posts: 13
- Joined: Mon Jun 07, 2010 12:25 am
Re: Arduino external power source voltage
I went with one from DSE, just cause it was a nice and compact plugpack. It has interchangable tips and it is set to the centre positive orientation.tronixstuff wrote:Do you have a multimeter? If so, check the polarity and voltage at the end of the DC plug. You want centre-positive.
Is it from Jaycar? What's the catalogue number?
http://www.dse.com.au/cgi-bin/dse.store ... View/M9933
Cheers
-
- Posts: 49
- Joined: Sat Mar 20, 2010 9:59 am
Re: Arduino external power source voltage
Crud. Most likely a dud plugpack. Take the arduino in with you when you change it over and try it before you leave.pyta101 wrote:I went with one from DSE, just cause it was a nice and compact plugpack. It has interchangable tips and it is set to the centre positive orientation.tronixstuff wrote:Do you have a multimeter? If so, check the polarity and voltage at the end of the DC plug. You want centre-positive.
Is it from Jaycar? What's the catalogue number?
http://www.dse.com.au/cgi-bin/dse.store ... View/M9933
Cheers
j
- adafruit_support_bill
- Posts: 88096
- Joined: Sat Feb 07, 2009 10:11 am
Re: Arduino external power source voltage
The 5v line should be able to supply more than enough to backlight an LCD. It depends somewhat on the source voltage, but with a 9v source I think it will supply 500 mA or so.
Please be positive and constructive with your questions and comments.