Hi i have a new problem with ethernet shield. i try to update sensor values to iot server. i upload code to arduino and try it in when usb connect it runs very well. But when i try external power source arduino doing nothing. Onyl pin 13 led on and arduino can't run any code.i try different voltage (ex. 6,7.5,9,12) but always do like that. Then if i push to reset button it runs code again. I can't figure what's the problem is?
With the lack of any real detail, one can only assume that not enough power is being delivered to Arduino. This is caused by either:
- The power source is not supplying enough of it
- Arduino isn't receiving it, i.e. a faulty jack
In the light of pin 13's LED, I'm betting it's #1
i thing i found problem but i can't solve it. arduino run program and it stuck from wehn program runs ethernet.begin code and led 13 always on and can not run any code forever. i test all external source and still same (Vin,5v,12v ...etc). Any ideas?
m3talover:
Any ideas?
No more than as clearly outlined in reply #1. Apparently details of your power supply are a secret.