YZXstudio devices discussion thread (USB power meters and more)

51 posts / 0 new
Last post

Pages

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174
YZXstudio devices discussion thread (USB power meters and more)
Edited by: will34 on 09/09/2016 - 19:02
will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174

Reserved

MRsDNF
MRsDNF's picture
Online
Last seen: 12 min 36 sec ago
Joined: 12/22/2011 - 21:18
Posts: 11146
Location: A light beam away from the missus in the land of Aus.

Thanks for the review will. Interesting reading.

My current and or voltage measurements are only relevent to anything that I measure.

Budget light hobby proudly sponsored by my Mastercard and unknowingly paid for by a hard working wife. 

djozz said "it came with chinese lettering that is chinese to me".

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

dodge_911
Offline
Last seen: 13 hours 16 min ago
Joined: 02/18/2016 - 15:07
Posts: 140

Oh man!
Didn’t know there were more nuts like me doing the same thing as me Big Smile
Great test, makes me want to get the new green YZXStudio meter with bluetooth.

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

 

angerdan
angerdan's picture
Offline
Last seen: 7 hours 16 min ago
Joined: 11/01/2015 - 10:07
Posts: 132

dodge_911 wrote:
the new green YZXStudio meter with bluetooth

Do you have a link?
maukka
maukka's picture
Offline
Last seen: 1 hour 16 min ago
Joined: 12/31/2015 - 04:15
Posts: 670
Location: Finland

angerdan wrote:
dodge_911 wrote:
the new green YZXStudio meter with bluetooth

Do you have a link?

ebay.com

Bluetooth (or serial) is also very handy when plotting stuff. See my review of Nitecore MH20

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174
angerdan wrote:
dodge_911 wrote:
the new green YZXStudio meter with bluetooth
Do you have a link?

Get it from Franky Tong, he’s a very reputable seller in eBay, fast communication and shipping. Shop name 99centhobbies / f-t-2000

This is the newest version with built in Usb cable resistance metering

http://www.ebay.com/ulk/itm/201517862132

dodge_911
Offline
Last seen: 13 hours 16 min ago
Joined: 02/18/2016 - 15:07
Posts: 140

maukka wrote:

Bluetooth (or serial) is also very handy when plotting stuff. See my review of Nitecore MH20

What software did you use to read out the raw data over bluetooth?
:: youtube ::
http://bit.ly/dodgereviewsyt
:: blog ::
http://bit.ly/dodgereviewstmb
  :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable resistance tests ::
http://bit.ly/drmicrousb
:: lightning cable resistance tests ::
http://bit.ly/drlightning
 :: type-C cable resistance tests ::
http://bit.ly/drtypec

 

maukka
maukka's picture
Offline
Last seen: 1 hour 16 min ago
Joined: 12/31/2015 - 04:15
Posts: 670
Location: Finland

dodge_911 wrote:
maukka wrote:

Bluetooth (or serial) is also very handy when plotting stuff. See my review of Nitecore MH20

What software did you use to read out the raw data over bluetooth?

Blueterm 2 then just Excel to plot the graph.
Kloepper Knife Works
Offline
Last seen: 1 year 3 months ago
Joined: 12/07/2014 - 21:28
Posts: 1405
Location: Lincoln, NE

Good review, I like the looks of the meters so I just ordered 2 with Bluetooth. Thanks for sharing!

swaan
Offline
Last seen: 2 weeks 16 hours ago
Joined: 08/15/2015 - 03:34
Posts: 44
Location: Estonia

I thought ZY1270 is the newest one.
http://r.ebay.com/D4hxHX

From what I understand, compared to ZY1266, it has output coding selection and a colour LCD.

HKJ
HKJ's picture
Offline
Last seen: 59 min 8 sec ago
Joined: 05/24/2011 - 12:23
Posts: 5262
Location: Copenhagen, Denmark

swaan wrote:
I thought ZY1270 is the newest one.
http://r.ebay.com/D4hxHX

From what I understand, compared to ZY1266, it has output coding selection and a colour LCD.

I cannot read the Chinese, but the ability to show usb coding has been present in the last couple of models.
Color and USB3 is new.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

swaan
Offline
Last seen: 2 weeks 16 hours ago
Joined: 08/15/2015 - 03:34
Posts: 44
Location: Estonia

HKJ, I believe it is not only showing charger coding (which is also there) but the meter can enforce output coding – you can use a dumb charger but use ZY1270 (or ZY1230) to make it QC2.0, Apple…etc.

HKJ
HKJ's picture
Offline
Last seen: 59 min 8 sec ago
Joined: 05/24/2011 - 12:23
Posts: 5262
Location: Copenhagen, Denmark
swaan wrote:
HKJ, I believe it is not only showing charger coding (which is also there) but the meter can enforce output coding – you can use a dumb charger but use ZY1270 (or ZY1230) to make it QC2.0, Apple…etc.

It is definitely possible to code it into the meter. But there would not be much idea in signalling QC2.0, only Apple 2.1A/Apple 2.4A/Samsung/DCP.
I will wait for a more readable manual.

I do also wonder if the colors are real or just colored areas on the display.

My website with reviews of many chargers and batteries (More than 1000): http://lygte-info.dk/

JamesB
Offline
Last seen: 8 hours 20 min ago
Joined: 08/24/2011 - 14:43
Posts: 663
Location: France
HKJ][quote=swaan wrote:
I do also wonder if the colors are real or just colored areas on the display.

Looking at the different screens it would seem the display is a real color one

swaan
Offline
Last seen: 2 weeks 16 hours ago
Joined: 08/15/2015 - 03:34
Posts: 44
Location: Estonia
JamesB][quote=HKJ wrote:
swaan wrote:
I do also wonder if the colors are real or just colored areas on the display.

“Looking at the different screens it would seem the display is a real color one”:http://www.chongdiantou.com/thread-6535-1-1.html

Now this is funny!

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174

I have spoken with Franky (probably the main overseas distributor for yzx products) and he tells me the Y1270 color oled version is still in its very first FW versions, and that it’s best to wait for a couple upgrades to have bugs sorted out and get a more accurate calibration. Anyways I think one could upgrade it at home with an ST usb programmer, the new FW archives are posted on chongdiantou chinese forum.

Here’s the Y1270 with some more specs on the official store: http://world.taobao.com/item/527344581834.htm?fromSite=main&spm=a312a.77...

I also ordered some interesting yzx products that I will review once they arrive, a YZX 7th gen 4-cell powerbank, the fan-cooled usb dummy load and the new Y1266 meter.

JamesB
Offline
Last seen: 8 hours 20 min ago
Joined: 08/24/2011 - 14:43
Posts: 663
Location: France

99centHobbies ebay store seems quite expensive , YZXstudio stuff is double the price compared to taobao and prices discussed in the chinese forum.

I’ll be totally in for a YZXstudio group buy. Innocent

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174

JamesB wrote:
99centHobbies ebay store seems quite expensive , YZXstudio stuff is double the price compared to taobao and prices discussed in the chinese forum.

I’ll be totally in for a YZXstudio group buy. Innocent

You’re right but communication with him is really easy and quick, he also provides a custom translated user manual and flashes the meters to the latest FW version available before shipping. Some other sellers don’t even know which version they’re shipping…

To buy from taobao you can use mistertao agent, but the only time I used it the item took 3 months to arrive, and they don’t accept paypal.

I could ask him for a possible groupbuy but I think it’s been asked before on EEVblog forum and it didn’t went on. But even at $30 this meter is totally worth it! Here’s the official sales thread: http://www.eevblog.com/forum/buysellwanted/franky’s-sales-thread/

maukka
maukka's picture
Offline
Last seen: 1 hour 16 min ago
Joined: 12/31/2015 - 04:15
Posts: 670
Location: Finland

I can totally vouch for Frankie and the 99centHobbies store. The YZXStudio products arrived in 12 days and he has replied to all of my email questions within a couple of minutes.

swaan
Offline
Last seen: 2 weeks 16 hours ago
Joined: 08/15/2015 - 03:34
Posts: 44
Location: Estonia
will34 wrote:
I also ordered some interesting yzx products that I will review once they arrive, a YZX 7th gen 4-cell powerbank, the fan-cooled usb dummy load and the new Y1266 meter.

Looking forward for those reviews!
I will also order a YZX powerbank soon. Looks like gen8 is coming: http://www.chongdiantou.com/thread-7916-1-1.html
There is however nothing “budget” about YZXstudio products! Smile

swaan
Offline
Last seen: 2 weeks 16 hours ago
Joined: 08/15/2015 - 03:34
Posts: 44
Location: Estonia

I just got my ZY1270 from YZXstudio’s Taobao shop. It is neat and everything but the most interesting thing was that it was shipped by Franky Tong!
I get it – the reason why Taobao is in Chinese is that they don’t want to deal with export hassles. They rather have resellers on Ebay do it.

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174

Hi everyone, since there’s an ongoing talk about the newer versions of the USB power meter and other YZXstudio gadgets I decided to turn this thread into a general discussion about YZXstudio devices. I have removed my powerbank tests which were not very relevant to the usb meter and will start a separate thread for all my existing and upcoming reviews.

So this is will be more or less an “Official” YZXstudio thread for BLF if you’re ok with it, since the users for these devices are limited I thought it is best to keep all the information and talking in one place. I will add an index to the OP pointing to reviews/first impressions/new products in and out of this thread, and since this is not my personal review thread anymore, please feel free to ask or add anything related to this. Smile

What do you think?

Lazy-R-us
Offline
Last seen: 1 hour 8 min ago
Joined: 09/13/2015 - 00:30
Posts: 501
Location: Carolinas, USA

I think it’s a great idea, I have my eye on these, but was worried about the risk of buying it from eBay. Reading the above discussion makes me much more comfortable.

I have a cheapo version on the way from BangGood, if I wind up using it a lot maybe I will upgrade to the xyzstudio version.

Subscribing…

Lazy-R-us

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174

I just received the YZXstudio 7th Gen 4-cell powerbank. The construction of this thing is top notch, and the available settings is astonishing! The most remarkable configurations are:

-Set output voltage for both 5V and QC 9V (-+0.5V)
-Set discharge cutoff voltage, charge termination voltage and current.
-Set battery charge current up to 4.5A (1A+ each)

I’m still trying to figure out some of the calibration features (the UI is in Chinese only), but so far I have correctly calibrated battery capacity and battery full voltage.

4x Sanyo GA as battery source

1× 5V & 1× 9V USB out, microUSB and 4mm input (shares the same plug as the sony PSP).

Empty

Loaded

Close-up of the board, some of the components are never seen in any powerbank before.

I calibrated the internal voltmeter to match my most accurate DMM and the skyRC MC3000. It tops the battery at 4.207V

I haven’t done all of the output testings but I did a quick discharge test at 1.5A and got 94.2% efficiency. This is the highest effieicncy I’ve seen not only in a powerbank, but in ANY DC-DC boost converter.

Battery capacity as measured by MC3000 at 0.5A discharge rate, with D-reduce of 250mA down to 2.5V: 3380mAh, 4 of them makes 50.02Wh. Note that the sanyo GA does not reach the spec’d 3,500mAh in real discharge tests.

Output at 5.15V 1.5A by using the YZX dummy load: 47.12Wh

So far I’m amazed by the performance of this powerbank… to be honest this is one of the finest electronic device I have ever used. Will soon upload more discharge tests.

swaan
Offline
Last seen: 2 weeks 16 hours ago
Joined: 08/15/2015 - 03:34
Posts: 44
Location: Estonia

Haha – I was thinking before that this is probably the most awesome power bank ever made. It looks beautiful too. And expensive, I presume?

They will soon release gen8, which could have english menus but the cells are soldered because it supports ***drum roll*** 12A charging! Big Smile
I will order one as soon as it is available.

BTW – if you have trouble deciphering Chinese you can use Google Translate on your smartphone with camera image as your input!

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174

At $60 and $25 for batteries it is not remotely budget, but it’s worth every cent!

I’m after Gen 8 as well, I like that a specialized DC adapter can be used to charge even faster than Quickcharge 2.0 or 3.0. The fastest charger I have for mine now is a 9V 2.5A car adapter for 22W+ output, even faster than a quickcharge adapter at 9V 1.8A. Both can allow the powerbank to push 4A to the batteries.

I’m using the google translate app, but some settings are translated as “Setting reference full power voltage”, so I really don’t know what that’s for.

I also got the ZL1000 dummy load with the upgraded Bourns multi-turn trimpot, so far it works as expected and runs relatively cool. Supports QC2.0/3.0 with auto coding request. Will upload a review after some more extensive use.

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174

I got the YZXstudio 1270 Color OLED meter with Bluetooth a couple days ago and have been playing with it a bit… Since all the technical aspects have already been covered in HKJ’s review I decided to write a quick guide for importing the raw data from the bluetooth terminal and use them to make a graph in excel.

  1. Enter the settings menu in the meter and set the serial upload rate to anything but zero. My preferred interval is 30sec.
  2. Search and connect the meter to your smartphone, will be listed as SPP-CA.
  3. Download and run Blueterm app, long press the screen to select the device and start logging.
  4. Once done with logging the data, copy the file to your computer and rename the format to *.txt.
    In the file you’ll see the raw data like this:
  5. Open Excel, select “Data” tab and then “From text”
  6. Select your .txt file and then “Comma” as the delimiter
  7. After that you’ll get two lines of data displayed in ten thousandth, so divide by that and set the decimal places you like. Add time axis as well.
    …….
  8. Final step is to create the graph of your liking and you’re done! Note that I placed the AMP value in a secondary axis.

—-

In this graph you can see how this powerbank fails to deliver a healthy voltage half the discharge cycle at a 1.5A rate, dropping from 5V to <4.3 is unacceptable.

The meter doesn’t send other important parameters such as capacity and energy, but you can calculate them using simple formulas. Here’s another example, rate set at 10sec this time.

DaneLaw
Offline
Last seen: 1 year 2 weeks ago
Joined: 04/14/2016 - 19:58
Posts: 2
Location: Copenhagen N.

Are also the owner of this meter and the lcdscreen looks fascinating with 0.1 values
wicked the amount of sellers listing this as usb3.0 and precirurius how an typo (that seems to originate from its version3.0 get evolved to USB3.0 and then just gets a life of it self, and is more the case then none ‘ the amount of sellers listing it as usb3.0, ewen thow its clearly not one of ZXYstudios USB3.0 meters.

the Bluetooth-datalogging in raw format of the 2 values, are there aint any apps that on the fly put them into an graph or manage them in a more pleasing way for the beholder..
I tryed the OWON app for there BT DMM and ewen thow there older BT2.0 APP reconize the SPP_CA (in regards to aint, on the owon bt4.0 app) it clearly wouldnt manage the values.

anybody on top’ of this ballpark and how this raw bluetooth-data is being managed and if there is any app-support to ex. win10/7, mac, android, windows phone that will play along with these raw stream of bluettoth-delivered-values and graph these string / hex values out on the fly, like you see on DMM datalogging software??. (certainly aint my field)

dodge_911
Offline
Last seen: 13 hours 16 min ago
Joined: 02/18/2016 - 15:07
Posts: 140

will34 wrote:
I got the YZXstudio 1270 Color OLED meter with Bluetooth a couple days ago and have been playing with it a bit… Since all the technical aspects have already been covered in HKJ’s review I decided to write a quick guide for importing the raw data from the bluetooth terminal and use them to make a graph in excel.

Thanks for that! It’s usable for any of the YZXStudio meters that have bluetooth too Smile
Now I need to buff up some on my excel (numbers) and math skills to figure out the formulas you used Big Smile
:: youtube ::
http://bit.ly/dodgereviewsyt
:: blog ::
http://bit.ly/dodgereviewstmb
  :: powerbank capacity tests ::
http://bit.ly/drpbcc
:: μusb cable resistance tests ::
http://bit.ly/drmicrousb
:: lightning cable resistance tests ::
http://bit.ly/drlightning
 :: type-C cable resistance tests ::
http://bit.ly/drtypec

 

will34
will34's picture
Offline
Last seen: 1 hour 52 min ago
Joined: 12/18/2012 - 00:12
Posts: 3174
dodge_911 wrote:
will34 wrote:
I got the YZXstudio 1270 Color OLED meter with Bluetooth a couple days ago and have been playing with it a bit… Since all the technical aspects have already been covered in HKJ’s review I decided to write a quick guide for importing the raw data from the bluetooth terminal and use them to make a graph in excel.
Thanks for that! It’s usable for any of the YZXStudio meters that have bluetooth too Smile Now I need to buff up some on my excel (numbers) and math skills to figure out the formulas you used Big Smile

It’s pretty easy… for Capacity (Ah):
First value: C = Current / records per hour
Then:
C1 = C + (Current / records per hour)
C2 = C1 + (Current / records per hour)
And so on… just drag down to replicate the formula for all fields

Records per hour = 3,600/serial upload date

For Energy is the same, instead of current use power.

Once you have the chart done just simply import new data for whatever you’re going to test. There is a very small variation in this calculated value vs the measured value displayed in the meter, but even at 10s refresh rate the variation was only at <1%. At 0.36s refresh rate the tolerance should be near zero, but that’s a lot of values to work with.

Pages