Tony Mauro

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  1. Thank you for the detailed response, Michael! Do you have a reference document on the voltage specs? Though we don't typically interface to off-CMOD logic, there may have been input signals (e.g. switch inputs) that exceeded 4.0 volts. I do not have any documentation that specifies the recommended operating range and would like to add this to my library for future classes and teachers. Thanks also for the debugging tips, I will probe the VCC3V3 rail to see if there are voltage spikes as you suggest. Best regards, Tony
  2. Thanks for the reply! I'm powering through VU pin 24 at 5V. And yes the failure is the same on all boards.
  3. Hello, I'm from PLTW and have seen several (at least 4) CMOD S6 devices fail this year in my class. I've used over 20 in my classes for the past 2 years and this is the first year that I've seen so many fail. The red led that normally lights when plugged into the USB is out. In probing the device, I measure about 4.5V at the input of IC1 (the 3.3V regulator) but only about .5V at the output (on the VCC3V3 line). Are there any known issues with these boards as it relates to blowing the regulators? Or any other common failures that is occurring where the board is operating fine but then the power led (red led) stops lighting and the device stops working? Is there any way to get these repaired/replaced? Thank you