What is the power consumption of the Arduino UNO Q?

Official Hardware UNO Family UNO Q
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I'm posting this in the “3rd Party Boards” subcategory because I don't have permission to post this in the correct subcategory.

According to the “From Blink to Think” livestream, the Arduino UNO Q consumes one watt of power. On the other hand, https://docs.arduino.cc/tutorials/uno-q/power-specification/#input-power recommends a USB-C power supply with an output of at least 15 watts. Which power consumption metric is more accurate?

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I have moved the topic

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What I saw was 5V at 3A so max 15W. I believe the Pi 5 is 5V at 5A or 25W so very competitive.

pert 4

I have corrected the problem with the configuration of the UNO Family > UNO Q category that caused that. The category is now configured so that everyone can create topics in it.

I apologize for any inconvenience.

3 Likes
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The confusing part is that although a 25 watt USB-C power supply is recommended for the Raspberry Pi 5, it itself only consumes four watts. At least according to the “Typical bare-board active current consumption” column of https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#typical-power-requirements.

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The specs are always for the worst case. They even had to invent their own special USB-C interface to get from 3A to 5A. The worst case is when the radio is at max.

Would you design a PSU that only worked at less than the worst case?

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Worst case for RPi is when you have an 16GB version with a bunch of powered USB devices connected, an SSD, a camera, and are using the Ethernet. Use of the GPU is probably another factor.

I'd expect the Wifi to be relatively minor (250mA for wifi modules is pretty common, whereas a USB device might draw 500mA or more.)

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Have you read the note and the paragraphs following the table you linked?
It explains why they recommend a 25W power supply.

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Here is the datasheet.
https://docs.arduino.cc/resources/datasheets/ABX00162-datasheet.pdf

EDIT: After doing research it is really different to a UNO R3 and you should check the datasheet.

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I am fairly certain that is the answer the company president gave when asked why 25W at the Pi5 launch.

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Not really:
From the datasheet

image
image985×407 82 KB

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here’s a complete article on the power specs

https://docs.arduino.cc/tutorials/uno-q/power-specification/

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I linked to that same article in my original post. It's lacking these details:

The only power consumption metric that both articles provide is recommendations for the rated current capabilities, when shopping for a 5V USB-C power supply. Only after including a statement made during the “From Blink to Think” livestream, does the discrepancy between vendors become somewhat resolved.

Specifically here: https://youtu.be/uYb8YzdMWbc?t=3722s

All of [the Qualcomm Dragonwing QRB2210’s capabilities] is in one watt of power envelope.

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Some of my power testing here: Arduino Uno Q · Issue #83 · geerlingguy/sbc-reviews · GitHub

In summary:

  • Idle power draw (at wall): 0.5 W
  • Maximum simulated power draw (stress-ng --matrix 0): 1.9 W
  • During Geekbench multicore benchmark: 2.5 W
  • During top500 HPL benchmark: 3.5 W

These measurements were all taken with a 27W USB-C power supply plugged into a ThirdReality Smart Outlet, with WiFi on and accessing the Uno via WiFi. No other peripherals were plugged in at the time.

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Hi, I've been measuring power consumtion with a usbc meter, because I'm very interested in both consumption and heat generation. I can confirm more or less the same numbers. I've a feeling that HW drivers are still not really optimized though, so maybe in some tasks it will hopefully improve in the future (decoding and encoding video as an example)

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What about needed Boot Wattage ?
Can you Boot & Run at 0.5A / 1A / 1.5A / or ?

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I run Uno Q, webcam, dongle, 2 servos and proximity sensor, everything on usb-c cable connected to Xiaomi powerbank (10000 mAh), and it can last for full day, sometimes 2 days on one charge. You need normal 3A cable to dongle for sure, otherwise 2 servos on full speed will reboot Uno. Project here: GitHub - msveshnikov/agi-robot

For some reason, it works stable only with USB-C/USB-C cable between powerbank and dongle. USB/A in powerbank booting Uno in 50% probability, it is not coming to heart animation just rebooting again after logo

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I wonder how hot the mpu gets during that top500 HPL benchmark?

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It is extremely hot, you can't touch it