Board of Education Power Failure
EmilyP
Posts: 21
Hello,
Today when I switched on my board of education, I noticed a power failure. All sensors were not running and I measured vdd to be 10mV with my o'scope and multimeter (which is the same measurement for when the board is not powered). The board, however, has vin at 5V (this was measured and verified in the same way. Also, the green pwr led is on). The microcontroller is running software fine. I have a ac to dc 5V converter powering my board.
Does anyone have any ideas why all the vdds are duds? My only idea is that power grounded without my knowledge. But this doesn't make too much sense since my microcontroller is still alive and there clearly wasn't a fire. LOL. It doesn't matter too much that my board isn't working because I'm soldering everything anyway but I would like to keep it around for testing.
Emily
Today when I switched on my board of education, I noticed a power failure. All sensors were not running and I measured vdd to be 10mV with my o'scope and multimeter (which is the same measurement for when the board is not powered). The board, however, has vin at 5V (this was measured and verified in the same way. Also, the green pwr led is on). The microcontroller is running software fine. I have a ac to dc 5V converter powering my board.
Does anyone have any ideas why all the vdds are duds? My only idea is that power grounded without my knowledge. But this doesn't make too much sense since my microcontroller is still alive and there clearly wasn't a fire. LOL. It doesn't matter too much that my board isn't working because I'm soldering everything anyway but I would like to keep it around for testing.
Emily
Comments
Dave ·
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Dave Andreae
Parallax Tech Support·
With only 10mV on Vdd the LED won’t light at all. Are you sure you got a correct measurement? Where are you getting the Vin and Vdd measurements from?
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Chris Savage
Parallax Engineering