USB power meter/tester thread - YZXStudio, Power-Z and more. Formerly "YZXstudio devices discussion"

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d_t_a
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Since the AVHzY CT-2 is supposed to be equivalent to the Kotomi / Power-Z KT-001, perhaps you can use that as a reference?

download link for AVHzY is here:
http://forum.avhzy.com/forum.php?mod=viewthread&tid=1&extra=page%3D1

JS-Fi
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Hello there!

I been looking for these testers and can’t decide which one would be best for me. To the first question.. With Power-Z KM001 they advert that nice windows app, which makes nice graph. Is that app compatible with also KT001? Or maybe even with other brands than Power-Z, like AVHzY CT-2? Also, if I understood right, none of those mentioned above has bluetooth? So if I want also bluetooth, would my options be YZXstudio 1276 or WEB-U3 SE? And what are their difference?

Thanks for help!

Edit: Does Power-Z KT001 support same firmware as AVHzY CT-2?

dodge_911
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The apps are not compatible, as far as I know.
Regarding the bluetooth : I don't know if the WEB-U3 has that function.
Mine (WEB-U3 MFI) doesn't have it.
And as for the YZXStudio 1276 make sure you order the right one (with BT). I ordered mine without, as the logging it provides is too basic.
I own all of the meters you mention, except the KT-001, that one's still on the way.

To answer your second question :

From the manual :

Hint: The model name can vary from one provider to another. So far, KT001, Kotomi Premium, CT-2, UT100 are provided, they have the same features and share the same manual, PC software and firmware, it is not necessary to concern about that.

:: youtube ::
http://bit.ly/dodgereviewsyt
    :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable tests ::
http://bit.ly/drmicrousb
:: lightning cable tests ::
http://bit.ly/drlightning
 :: type-C cable tests ::
http://bit.ly/drtypec

 

JS-Fi
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Thanks for the info. I think I’ll get KT001 or CT-2 and forget the bluetooth idea.

d_t_a
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I would also agree with dodge_911, regarding Bluetooth functionality — check if that USB meter has a good app to make use of the BT function.

I also have the ZY1276 without BT, since I read that the BT only outputs values (much like a serial data cable) — as YZXStudio does not offer own software (not sure, but if they have, it likely is only a serial logger software) to graph or control the ZY1276.

The RD UM24C with BT, I also got this one, the software is a bit basic — mainly the software (I’m referring to the Windows software, I hadn’t tried the Android app) just shows all screens (in the USB meter, one has to browse thru multiple pages to get all the info) into one screen (in Windows software, all info can be displayed on the screen at once). Plus the software also allows logging the data (I haven’t tried this functionality much though).

But I generally use the ZY1276 and RD UM24C as stand-alone devices (not linked to PC/smartphone). I use the EBD-USB+ USB meter/load tester if I need to test USB devices. EBD-USB+ does not have a screen, it requires Windows software to show the info, but it graphs those data nicely, and also has some useful controls (eg. for testing capacity or for monitoring USB devices, and then recording the data unattended until user-defined thresholds are reached (eg. monitor USB charging until current falls below certain limit; or load test a battery until the voltage falls below certain limit, then stop the test automatically). It’s not Bluetooth though — it has to be connected to the PC via micro-USB cable.

dodge_911
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I'm using almost the same setup here for my YT channel.
UPM's are used standalone, for visual purposes.
For graphing I have the ZKE-TECH EBD-USB's, which I timelapse/screenshot every 10 seconds.

Although, I am thinking of incorporating the UM24C and POWER-Z UPM's windows apps somehow into my workflow, they really do make nice visual representations of the data.
But I'd have to upgrade to a newer windows version, as I'm still running WinXP on my little nettop dedicated to testing.

All methods of logging have their use. YZXStudio was the trendsetter with many functions for a UPM, but they have been surpassed by other manufacturers that offer better software logging solutions.
But that doesn't mean I'm not buying any more YZXStudio UPM's though, they have a great UI and as stated previously, are a great visual aid in my testing.

On another note, you could maybe consider a YZXStudio ZL-1100 combined with the app someone here on BLF made?

:: youtube ::
http://bit.ly/dodgereviewsyt
    :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable tests ::
http://bit.ly/drmicrousb
:: lightning cable tests ::
http://bit.ly/drlightning
 :: type-C cable tests ::
http://bit.ly/drtypec

 

xnode
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What do you think of these?

QC2.0/QC3.0/MTK-PE Trigger USB Tester Induction Quick Charge Voltage Detector Current Capacity Power:
https://www.banggood.com/QC2_0QC3_0MTK-PE-Trigger-USB-Tester-Induction-Q...

JUWEI QC2.0/3.0 Automatic USB Tester Voltage Ammeter Quick Charger Power Bank Voltage Trigger:
https://www.banggood.com/JUWEI-QC2_03_0-Automatic-USB-Tester-Voltage-Amm...

angerdan
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xnode wrote:
What do you think of these?
QC2.0/QC3.0/MTK-PE Trigger USB Tester Induction Quick Charge Voltage Detector Current Capacity Power
JUWEI QC2.0/3.0 Automatic USB Tester Voltage Ammeter Quick Charger Power Bank Voltage Trigger

HKJ did test them one/two year(s) ago:
Test/review of QC3.0/2.0 trigger | BudgetLightForum.com
Test/Review of USB meter: QC2-3-MTK-PE Trigger J7-t | BudgetLightForum.com
dodge_911
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I've been messing around a bit with some newer UPMS, I've got quite the collection now :

I'll be posting 4 UPM vids on my YT channel this coming May...

:: youtube ::
http://bit.ly/dodgereviewsyt
    :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable tests ::
http://bit.ly/drmicrousb
:: lightning cable tests ::
http://bit.ly/drlightning
 :: type-C cable tests ::
http://bit.ly/drtypec

 

angerdan
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Great collection!
Very cool Big Smile

Will you post the results readable too?

dodge_911
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Nah, kids nowadays don't read anymore Wink

:: youtube ::
http://bit.ly/dodgereviewsyt
    :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable tests ::
http://bit.ly/drmicrousb
:: lightning cable tests ::
http://bit.ly/drlightning
 :: type-C cable tests ::
http://bit.ly/drtypec

 

xnode
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dodge_911 wrote:

I’ve been messing around a bit with some newer UPMS, I’ve got quite the collection now


I’ll be posting 4 UPM vids on my YT channel this coming May…

Great, I’ve got two of those. i also have these two:

dodge_911 wrote:

Nah, kids nowadays don’t read anymore Wink

And it’s bad, because things said in videos don’t appear in search engines as text. So many things out there you wouldn’t find until you reach the appropriate video most times by accident.
angerdan
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I watch videos only for entertainment – knowledge need to be consumed through written words for me Wink
Reading is much more easier. Glasses

dodge_911
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xnode wrote:
Great, I’ve got two of those. i also have these two: * Plugable USB-C Voltage and Amperage Meter with Current Flow Direction Indication, Aluminum Construction, and OLED Screen * “Satechi USB-C Power Meter Tester Multimeter for 2016/2017 MacBook Pro, 2015/2016/2017 MacBook, iMac Pro, 2017 iMac, Lenovo Yoga, Dell XPS, HP Specte x360, Samsung S9 Plus, S9, S8 and more”:https://www.amazon.com/Satechi-Tester-Multimeter-MacBook-Samsung/dp/B01M...

I looked at those two for a long time, but couldn’t pull the trigger on a purchase because of their limited functions.


Regarding videos vs written reviews : in both is a wealth of information, I used to not search YouTube when looking for information.
Ever since I did, I found out more on certain topics.

:: youtube ::
http://bit.ly/dodgereviewsyt
    :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable tests ::
http://bit.ly/drmicrousb
:: lightning cable tests ::
http://bit.ly/drlightning
 :: type-C cable tests ::
http://bit.ly/drtypec

 

maukka
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Not in your typical Chinese price class, but here’s an interesting USB (type C) tester / load / capacity meter from Passmark:
https://www.passmark.com/products/usb-power-delivery-tester.htm

Mjlortons overview:

angerdan
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maukka wrote:
Not in your typical Chinese price class, but here’s an interesting USB (type C) tester / load / capacity meter from Passmark:
https://www.passmark.com/products/usb-power-delivery-tester.htm

Great find!
$490 isn’t entry level quality Cool
white7561
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Hi guys. I'm new here. I'm about to buy ZY1276 from AliExpress.. I know the firmware version is 3.35 . On the changelog, on the new 3.36 version. It said something about new hardware. Does it mean that ZY1276 has 2 different hardware revisions? If not. Could I just upgrade the fw later ? Thanks so much :) . I've asked the seller. But he/she knows nothing about what I'm talking about. Oh yeah another question. Is ZY1276 supposed to have Bluetooth support by default or no? Thanks again :)

xnode
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I bought my YZXstudio ZY1270 to Franky Tong, and the support was superb. They provided me the PDF user manual. No idea if he’s still selling or not, try to find another good one:

Starting a new chapter

white7561
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The whole reason I use AliExpress is because it's hard to find seller that ship to Indonesia... Do you know the answer to my questions above? Thanks Smile

xnode
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You can upgrade the firmware of the ZY1276 but you need the ST-Link v2 programmer:

https://usbchargingblog.wordpress.com/2017/12/02/kaayee-usb-multimeter-y...

white7561
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I know. I meant are there more hardware revisions for ZY1276 or is it the only one? Like it has only 1 hardware version? I asked this because on the changelog for version 3.36 it says something about new hardware . Thanks Smile

Oh yeah. Would you show me step by step of how to flash newest ZY1276 using ST-Link V2? I couldn't seem to understand the instructions because it's hard to understand. Thank you Smile

And also what are the differences between ZY1276 with ZY1275 ?

d_t_a
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white7561,

Check out message posts #122 & #133. I wrote a little bit of info on how I flashed my ZY1276 from 3.33N to 3.35H.

~~~~

I checked out the firmware change log (same link as mentioned in my earlier post, but now has new firmware version info).
Going by the firmware change log (in Chinese — use a translator), it does appear to indicate the firmware v3.36 is meant to support a new revision of the ZY1276.
(I’m not sure if this is the “ZY1276P”, which I think I’ve seen somewhere on the web or elsewhere).

~~~~
using online translation, these are the change log for v3.36D (for earlier versions, see my previous post on page 5 of this message thread)

Quote:
V3.36A-180109 internal measurement version. With the new hardware version, the EMARK line can be measured simply by inserting the meter. No PD adapter is required. The PD decoy triggers both positive and negative triggers. Old version fly line method to see the figure.

V3.36B-180205 With the new hardware version, add a white background theme, adjust the font language in the system settings, fix a possible flash zero BUG, optimization to reduce the screen power consumption.

V3.36C-180322 Line resistance interface no-load long press mode2 with load Long press cut mode1 and power down record, optimize the menu cursor position, optimize fast charge trigger back to the main interface, load continuously, optimize the Type-C input transfer USB-A mother output compatibility, increase the time to display to 3 digits.

V3.36D-180402 Fixes and supports LeTV PD2.0 header, optimizes some Samsung AFC trigger stability, optimizes QC4-PPS protocol to trigger the first highest voltage second lowest voltage, and optimizes QC4-PPS maximum power display in automatic mode.

(the translation is a bit cryptic, will check if I can understand and improve the translation manually..)

It does reference a “new hardware version”, which can measure “E-Marker”.
There is an accompanying image in the firmware upgrade file, which seems to mean, to modify (jumper?? — the translation says “fly line”) certain points of the previous-hardware-version ZY1276 so it also supports the E-Marker (at least that’s how I understand it)

~~~~~

regarding Bluetooth: my ZY1276 didn’t come with Bluetooth. However there is an option to change to the backplate with the Bluetooth module (additional purchase)

there is an in-house PC app now (from the same links as mentioned above), it seems basic, though I couldn’t get it to work with my ZL1100 (supposed to work with ZY1276 and ZL1100, at least how I understand it… or maybe only for new revisions?)

~~~~

there is some bit of info for the ZY1276 vs ZY1275 (black). But it seems the main difference is the ZY1275 supports 8A. Also ZY1275 is smaller/slimmer..

white7561
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@d_t_a okay. so is ZY1276 better than ZY1275? in features etc?

white7561
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And also. What do you guys think? ZY1276 is double the price than UM25C in my country. Is ZY1276 worth that double than UM25C? ZY1276 is about 50bucks here… Is it worth comparing the price and usefulness?

dodge_911
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white7561 wrote:
And also. What do you guys think? ZY1276 is double the price than UM25C in my country. Is ZY1276 worth that double than UM25C? ZY1276 is about 50bucks here... Is it worth comparing the price and usefulness?

 

Imho yes, the price difference is justified.

I've done a video on the ZY1276 has a some of functions the UM25C doesn't have.

The protocol autodetect feature is one I use quite a lot.

 

Haven't tested the UMC25 yet, though, so I could be missing some of the functions.

:: youtube ::
http://bit.ly/dodgereviewsyt
    :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable tests ::
http://bit.ly/drmicrousb
:: lightning cable tests ::
http://bit.ly/drlightning
 :: type-C cable tests ::
http://bit.ly/drtypec

 

white7561
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dodge_911 wrote:

white7561 wrote:
And also. What do you guys think? ZY1276 is double the price than UM25C in my country. Is ZY1276 worth that double than UM25C? ZY1276 is about 50bucks here… Is it worth comparing the price and usefulness?

 


Imho yes, the price difference is justified.


I’ve done a video on the ZY1276 has a some of functions the UM25C doesn’t have.


The protocol autodetect feature is one I use quite a lot.


 


Haven’t tested the UMC25 yet, though, so I could be missing some of the functions.

yeah i bought it Smile im just hoping it will be always updated with new protocols.

d_t_a
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One thing I hope could be improved for the ZY1276 is the graph-plotting. Changing the speed requires going to the Settings mode, which means unplugging and replugging the ZY1276 while holding down the button.

I would have liked a quick way to change the graph speed while it’s in the graph-curve display mode (sometimes fast mode will help detect if the current being supplied by the USB power supply is consistent or there are micro-fluctuations in voltage…) Choosing slow mode also useful in certain scenarios. No quick way to toggle between faster and slower graph-curve display (unlike the Power-Z KM001 where it’s easy to change the curve display speed).

white7561
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d_t_a wrote:
One thing I hope could be improved for the ZY1276 is the graph-plotting. Changing the speed requires going to the Settings mode, which means unplugging and replugging the ZY1276 while holding down the button.

I would have liked a quick way to change the graph speed while it’s in the graph-curve display mode (sometimes fast mode will help detect if the current being supplied by the USB power supply is consistent or there are micro-fluctuations in voltage…) Choosing slow mode also useful in certain scenarios. No quick way to toggle between faster and slower graph-curve display (unlike the Power-Z KM001 where it’s easy to change the curve display speed).

eh you could just chat the maker or email him . ask him to include that on the newest update. he just updated it to 3.36E .

bad
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Look at this ZY1280 with usb connectivity for monitoring, like KM001 has.
Also another new product is ZY1278 compact, usb-c only

I’d like to see both reviewed Smile

https://imgur.com/a/CSHJg9h

xnode
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bad wrote:
Look at this ZY1280 with usb connectivity for monitoring, like KM001 has.
Also another new product is ZY1278 compact, usb-c only

I’d like to see both reviewed Smile

https://imgur.com/a/CSHJg9h


New hardware?

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