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Topic: my adruino board doesn't work with external power  (Read 515 times) previous topic - next topic

neghesa

hi guys . i have a adruino uno board. if i connect it to a 9v battery my board isn't on but when i connect with a usb cable to my laptop it works just fine can someone tell me what the problem might be ?

spycatcher2k

a flat battery, or you have something pulling a lot of power, or you have a broken Arduino (not adruino) - the hint is in the website name!  :o
Mrs Drew
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neghesa

 uhmm my battery i have tested. i have tried my exernal power source on 2 adruinos boards but both of them work only with my usb cable. when i measure at my regulator it is 0 with my battery. but with my usb cable it works. ( in both cases ) and yes indeed it is adruino my bad. at first i thought it is my power jack. but when i measure it it has a voltage

neghesa

a broken adruio the lamp doesn't go on right ?

Arduino_Beginner

I suggest you try some adapter like the one in this picture
http://makerselectronics.com/wp-content/uploads/2016/08/AC-DC-Adapter-12V-1A.jpg
Adapters like this almost in every house so you needn't buy one as most routers uses those adapters, Even music keyboards uses them.

NOTE: The adapter output MUSTN'T be higher than 12V DC !!

neghesa


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