Why use the Raspberry Power supply checker at all? check amperage?

Having experienced several power related issues while also having installed the above integration, and a binary_sensor.rpi_power_status in the frontend, I am wondering why bother at all? This has never shown anything a safe state (‘off’) and green in the history.

besides that, I was wondering if we can somehow measure the power the Pi is drawing. I needed that info to be sure the attached devices wouldn’t max out the total amount of available 3A of the official Power supply. Since I couldn’t check on the Pi itself, or any of its sensors, I had to learn the hard way an SSD and operational Pi4 HA together can draw more than that, and brick…

Are you trying to measure the RPI on which HA is running?
Obviously it will always be green, then. The moment it would have become red, your RPI/HA dies :wink:

If it’s another PI, why not using a smart plug with Power reading?

So what’s the use of the sensor then…

yeah, I could spend yet another 40E to buy another smart switch and measure the Amps… which would a bit of overkill imho. :slight_smile:

I checked the code and all the sensor do is detect shitty power supplies that do not deliver 5V.
Which, conveniently, is exactly what the integration description says :wink:

It actually does not handle amperage/power at all.

right, thanks! 5v they all deliver I suppose… -->> deleting the integration

for the real time power consumption, I would have to turn to a smart meter probably, and a fast one at that. differences on .1 A are important, and of my current meters, Qubino seems the most adequate here, providing V, A, W and kWh, is that precise and fast

Not all, but it’s something you would check once.
Having an integration for that is completely pointless, I totally agree.

Yek, pricey.
I use cheapo xiaomi or tuya ones, but the need is purely indicative, here.

yeah, but cheap comes with cloud… :wink:
anyways, thanks!

No, comes with zigbee :slight_smile:

I came across this thread by mistake (it was a top result in Google) and was surprised by the concussions that the Raspberry Pi Power Supply Checker is pointless.
The problems that can come from undervoltage on an RPi are well documented and will not necessarily result in a crashed system, but rather in an unstable one.
Even the official power supply could degrade over time and cause issues.
This integration is in fact very useful in debugging an unstable system but personally I would recommend that it is set to alert the user whenever it detects any voltage problems as it can be a first sign of a failing power supply.

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