Spark 3 Power Consumption

Hardware
1

I’ve looked for this information and cannot find it anywhere. Apologies if it is staring me in the face.

How much power does the Spark 3 consume?

I’m planning my power supply design and want to make sure I get this right.
I plan to power the Spark 3 via the same USB cable that connects it to a Raspberry Pi 4.
I want to power Raspberry Pi with PoE, offering UPS.

On the Spark 3 side, I’m planning on 2 expansion boards, 3 SSR’s and 4 temp probes.
It would be nice to see a break down of power consumption by individual piece for future growth planning.

Thanks in advance.

2

My setup with 2 expansion boards, 4 SSR’s and 4 temp probes is powered from the USB of the Raspberry Pi 3, which is powered by a 12W USB charger. So in total not more than 12W.

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3

The Raspberry Pi PoE hat is capable of delivering 2.5A at 5V (12.5W) <- (this value edited after Timan_Rebel’s post below)
We are getting closer…

4

I’m using a 2,5A charger, so that should work… (2,5A * 5V = 12,5W, right? It has been a while :slight_smile: )

5

Yes, absolutely! Please forgive my math. I refuse to drink coffee on weekends to keep my dependency lower.
Thanks again.

6

The Spark itself will consume about 100mA without anything plugged in.

The SSRs and sensors will consume very little. This should be no problem.

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7

Hi Elco
Is or will it be possible to turn off the display completely on Spark 3 in order to protect the display from a text that will burn into the LCD over time, since all temperature readings are performed in Brewblox?

8

You can lower the brightness in the display widget.

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