Timeline for Cannot power up Arduino Uno + Ethernet Shield with other than computer USB
Current License: CC BY-SA 3.0
46 events
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| Mar 31, 2020 at 0:57 | answer | added | user65186 | timeline score: 0 | |
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| Mar 27, 2017 at 12:00 | answer | added | Code Gorilla | timeline score: 2 | |
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| Sep 27, 2016 at 11:51 | answer | added | Roberto Lo Giacco | timeline score: 0 | |
| Sep 27, 2016 at 6:08 | comment | added | Julien | @Dims Have you done the voltage measurements ? I think when ethernet powers up the peak current consumption makes the device reset. Try also pressing reset button instead of just plugging the USB. does this give same issue ? For debug, as the problem only occurs without connection to computer we cannot use print. You may try to add some 1s delays and LED blink before and after "critical" function call to see if the code is executed of if the device resets (or write some flags to EEPROM). | |
| Sep 26, 2016 at 17:14 | comment | added | Dims | @Julien can you provide some hints about how to debug in my situation? | |
| Sep 26, 2016 at 6:03 | comment | added | Julien | Between pins GND and 5V on the header. You should have between 4.5 and 5.5 on computer. The interesting measurement is on the not working power sources. I've not seen anything obvious in the source. You will need to learn to debugg ;) | |
| Sep 26, 2016 at 6:02 | comment | added | Dims | @Julien can you check SW, what can be wrong there? | |
| Sep 26, 2016 at 5:50 | comment | added | Dims | @Julien where to measure while connecting to computer? | |
| Sep 25, 2016 at 8:25 | comment | added | Julien | Have you tried to measure voltage on board in different configuration ? This would help choosing between hardware and software problem (although update 4 makes me think about SW) | |
| Sep 24, 2016 at 2:18 | comment | added | Nick Gammon♦ |
It is plugged into Samsung tablet USB power of 2A, so insufficient current is unprobable reason. - I just measured my Uno and Ethernet card operating, and they were drawing about 200 mA of current.
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| Sep 24, 2016 at 2:14 | comment | added | Nick Gammon♦ |
Have anybody ever powering Arduino + Ethernet not from USB? - yes I have one sitting around plugged into a wall-wart and connected to the (ethernet) network. It certainly works in that configuration.
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| S Sep 23, 2016 at 17:12 | history | bounty started | Dims | ||
| S Sep 23, 2016 at 17:12 | history | notice added | Dims | Draw attention | |
| Sep 23, 2016 at 17:11 | history | edited | Dims | CC BY-SA 3.0 |
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| Aug 26, 2016 at 21:38 | history | edited | Dims | CC BY-SA 3.0 |
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| Aug 26, 2016 at 21:18 | history | edited | Dims | CC BY-SA 3.0 |
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| Aug 26, 2016 at 19:51 | history | edited | Dims | CC BY-SA 3.0 |
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| Aug 26, 2016 at 19:49 | comment | added | Dims | @MikaelPatel definitely not. If no Ethernet cable, then only power LED shines. If ETH cable connected, then other green LED bursting. But not the same way as when board works (if connect computer USB). | |
| Aug 26, 2016 at 15:50 | comment | added | Mikael Patel | Is the Ethernet shield status LEDs the same if you disconnect the network cable? | |
| Aug 26, 2016 at 9:20 | history | edited | Dims | CC BY-SA 3.0 |
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| Aug 26, 2016 at 9:09 | history | edited | Dims | CC BY-SA 3.0 |
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| Aug 26, 2016 at 8:44 | comment | added | Dims | Software is just Ethernet sample from here: arduino.cc/en/Tutorial/WebServer It is true that is contains writing to serial. Can this explain my situation? | |
| Aug 26, 2016 at 1:39 | comment | added | Chris Stratton | This is basically unanswerable. Either your software requires communication from a host PC to function, or else some part of the setup is not what it is described to be. | |
| Aug 25, 2016 at 19:15 | history | asked | Dims | CC BY-SA 3.0 |