SmartPower3 for home NAS power monitor

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adriano12221
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SmartPower3 for home NAS power monitor

Post by adriano12221 »

Hi
I'm new here and i wonder if it's possible to use SmartPower 3 for power usage monitor for home nas on odroid H4 Ultra:
4 * 3,5" 10 TB disk (Seagate Exos)
1 * NVME 512 GB disk
In SP3 specs they say that output is 2x50W. If I plug SP3 to nas with specs above, does it not fry when nas starts? HDDs needs on start quite high power.
Thanks in advance

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mctom
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Re: SmartPower3 for home NAS power monitor

Post by mctom »

SP3 does not have hardware overcurrent limiter if I remember correctly, but it is rated at 3A.

I think there are more elegant ways to measure input current than buying a dual channel programmable power supply with a display. There are dedicated modules for DC current measurement.
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Re: SmartPower3 for home NAS power monitor

Post by xnd »

I'm using Shelly Plus 1PM and/or Shelly Plus Plug S for monitoring power - but they are only for AC power, not for DC.
Can someone recommend any elegant (final) solution for measuring DC power which can be easily used? Ideally with some API, like Shelly has.
proud owner of Odroid H3 ( + 48 GB RAM: 16GB+32GB Crucial CT32G4SFD832A & Samsung SSD 980 PRO 1TB M.2; OS: DietPi - Debian 12; idle power consumption: ~ 1.1—2W)

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mctom
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Re: SmartPower3 for home NAS power monitor

Post by mctom »

Here you go - some random module with INA226:
https://kamami.pl/czujniki-pradu/573164 ... na226.html
Costs about $8, can measure voltage, current and calculate power (as if multiplying one by the other was hard).
Communicates via I2C which is available on the H-series GPIO headers.

API? I think reading I2C registers is simpler than finding some random library online and debugging it. ;)
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