Timeline for ATmega32U4: no output
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
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| Aug 10, 2014 at 1:47 | comment | added | gummiwipfel | The other components on the board are the buck-boost converter, a dynamic power-path management chip which includes the logic to load a rechargeable battery and the LEDs, as well a LED to signal that there is power. I also measured the current before installing the microcontroller and it was about the same, so I assume the other parts are causing the 200mA. | |
| Aug 10, 2014 at 1:30 | comment | added | RJR | 200mA sounds high. What else is connected? I've never had a ATMega run even warm without drawing any current on its IO ports. | |
| Aug 9, 2014 at 23:21 | comment | added | gummiwipfel | In the second image the surprising part was that there is no logic signal as you would expect from the data-lines of an USB-connector; that's why I got suspicious and tried the test program. The microcontroller warms up a little bit but nothing seems to overheat. There is also a buck-boost regulator on the board and the whole board (without any LED light up) draws about 90mA-200mA when powered with 5V. | |
| Aug 9, 2014 at 23:16 | history | edited | Ricardo | CC BY-SA 3.0 |
added 1 character in body
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| Aug 9, 2014 at 22:52 | history | answered | user50745 | CC BY-SA 3.0 |