Products > Test Equipment
Qoitech Otii
Commander_Spock:
i am searching information and real user opinion about the qoitech solution that is described at https://www.qoitech.com/features ?
Is anybody using a Otii arc willing to share opinion about this equipment ?
i understood it is connected to via usb to a pc but is it possible to have an external power supply because the specs shows that it can deliver 5V and 4A and this is way above what a pc usb port can deliver.. do they allow an external power supply to their box ? do they provide it with the box or do they sell it as an option ?
as of now i am reluctant to buy their premium solution as this will be seen as opex and not capex (this is a totally different story to commit money every year rather than to pay only once something)
jeremy:
I don’t have one, but it says on digikey:
Power supply with output voltage range of 0.5 V to 3.75 V when USB powered, up to 5.0 V when powered with optional DC adapter
Fungus:
--- Quote from: jeremy on January 25, 2019, 10:53:54 am ---I don’t have one, but it says on digikey:
Power supply with output voltage range of 0.5 V to 3.75 V when USB powered, up to 5.0 V when powered with optional DC adapter
--- End quote ---
On the web page provided it says "provides up to 5 V output voltage and runs high resolution current measurements with a sample rate up to 4 ksps for the range of 1 μA - 5 A."
I'm guessing the important part is the part I highlighted in bold. This is a specialist power supply for measuring current on low voltage devices that go to sleep a lot.
Is it any good at that? I don't know. The hardware is straightforward to build so I'm guessing it's mostly down to the software. The software has a trial version and sample data so you can look at it. That's the place to start.
Commander_Spock:
yes this is a power supply that is used to better understand the power consomption of IOT while they are running, transmitting something via wifi/bluetooth/lora/sigfox or sleeping
chrfle:
--- Quote from: Commander_Spock on January 25, 2019, 10:35:08 am ---do they provide it with the box or do they sell it as an option ?
--- End quote ---
Hello
External power supply is not included. As many users will never need it we decided it would be better to not include it. See the Qoitech FAQ for recommendations on which external power supply to select if you need one.
For some real user feedback, feel free to browse our forum.
Regards
Christer Fletcher
Software developer @ Qoitech
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