Power Profiler Kit (board)

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RogerClark
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Power Profiler Kit (board)

Post by RogerClark » Sat Feb 04, 2017 2:20 am

I received the Power Profiler Kit (board) yesterday.
IMG_20170204_130023071.jpg
IMG_20170204_130023071.jpg (249.81 KiB) Viewed 429 times
https://www.nordicsemi.com/eng/Products ... ofiler-Kit

The board is designed to measure current consumption on low power devices, e.g. Bluetooth, but it could also be used to measure power usage on any low power board (up to 70mA), for anyone wanting to optimise their software and hardware for battery operation.

The spec is

• 0-70 mA current measurement range
• Down to 0.2 μA measurement resolution
• 77 kHz sampling rate
• Built-in programmable regulator with a 1.8 V to 3.6 V output range
• Support for external power supply with a 1.8 V to 3.6 V input range
• Measure average current consumption up to 20 seconds
• Desktop application is available in Python allowing customization
• Export measurement data for post-processing


Although its designed to primarily work with Nordic nRF5 development boards, it also supports measurement of power to external boards - which is what I want to use it for.

However, what I didn't realise when I bought it, is that it does not work unless plugged into an Nordic nRF5 dev board, or have a Segger Jlink connected to it, as it doesnt have it own on board USB interface, it relies on JLink for that. Its USB connector is purely for power.

Luckily I have 2 different Nordic nRF5 development boards, so I can use one of them as a host.


I've not had chance to try it yet, as the hosting issue on the forum has soaked up a load of time over the last 2 or 3 days, plus I have the day job to do ;-)

But I may post some logs from my nRF51 SmartBeacon board, and may also try a Black Pill.

I recall Andy wrote a sunrise / sunset timer which used the low power mode of the STM32, so that would be an interesting test of this board.

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BennehBoy
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Re: Power Profiler Kit (board)

Post by BennehBoy » Sat Feb 04, 2017 9:34 am

What are all those pads for?
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RogerClark
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Re: Power Profiler Kit (board)

Post by RogerClark » Sat Feb 04, 2017 9:58 am

Dont know.

I'll find out

zmemw16
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Re: Power Profiler Kit (board)

Post by zmemw16 » Sat Feb 04, 2017 1:41 pm

ic and headers please, no vinegar just salt
yeah i know
stephen

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RogerClark
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Re: Power Profiler Kit (board)

Post by RogerClark » Sat Feb 04, 2017 8:26 pm

Looking at the schematic, I think those unused pads are somehow for Arduino style headers.

The Nordic dev kit boards use Arduino layout headers, and this board is effectively a Arduino "shield"

Though those pads are not through holes, so I don't know quite how they would ever put headers on them. Perhaps there are surface mount headers that would fit.

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Re: Power Profiler Kit (board)

Post by zmemw16 » Sat Feb 04, 2017 10:05 pm


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RogerClark
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Re: Power Profiler Kit (board)

Post by RogerClark » Sun Feb 05, 2017 1:16 am


Thanks

I doubt I'll ever attach headers to it, as I don't normally use Arduino Shields, but its good to know that I could if I wanted to.

I'll generally just be using this board to measure current consumption on low power projects, mainly Bluetooth Low Energy, but also even STM32F103 or STM32L4

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