Open anschweitzer opened 1 year ago
Some comments from @jessicamillar:
It is likely hardware, with a high probability of voltage spike. The first corrective action was to put in a surge protector. We've done that, and I've ordered a better one that will arrive at Phillip's house tomorrow. When we put Pi's in the field before, they were behind a DC converter that was built into our board (we would wire the device into 240, and it measured the voltage internally and also did the switching internally, so it had high voltage and low voltage sides). That converter was high quality and the most expensive thing in our board. It probably did a better job of maintaining healthy low voltages for the electronics than the cheap off-the-shel bricks we are getting. So we are also going to do some more research and take some more care in selecting higher quality converters. So when we said we've put hundreds of Pis in the field before, it was true, but not with cheap converters.
Also, there were three hardware pieces that became non-functional: both EZ-Flows, and also the little hat that sits on top of the PI for i2c conversion. To me this looks like voltage went out of range (10V?), probably hurt everything, and fried some of it.
The "apple" rasperry pi in Freedom Maine went dark on 2023-02-20 at 12:50 GMT. None of its lights were blinking.
Our current favorite theory is that a voltage spike caused this.
Here are logs from that time.
Here's a summary of what we see in the scada logs:
syslog
tails a similar but not identical confusing story: