USB power meter/tester thread - YZXStudio, Power-Z, RDTech and more.

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 :slight_smile: . 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 :slight_smile:

I bought my YZXstudio ZY1270 to Franky Tong (f-t-2000 on ebay), 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

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 :)

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

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 :)

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 :)

And also what are the differences between ZY1276 with ZY1275 ?

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)

(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…

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

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 :slight_smile: im just hoping it will be always updated with new protocols.

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 .

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 :slight_smile:

New hardware?

The new ZY1280 appears to be the upgrade from the ZY1276 / ZY1276P(Plus?). The ZY1278 appears to just be the USB-C (only) version of the ZY1276.

Check the official YZXStudio store in TaoBao here:
https://item.taobao.com/item.htm?id=549902607690

using Google Translate to translate the marketing blurb for the new meters:

Hey. Oh so the new model could convert QC type c to PD? nice . Anyway on zy1276 . I have some questions. So I’m trying to use my load dummy. This one needs usb power to run. So. Could I just connect it to the meter while I use the output too for draining? Will the meter reads both outputs usage? So basically. Type c input to ZY1276. Then on output I use both usb a and type c. Say the type a uses 1A and the type c uses 1A. Will the meter reads it correctly? So it shows 2A? Thanks…

also… eh, when upgrading . the instruction says to check the factory reset on program while flashing. does it resets calibration? and if didnt check the reset on while flashing, does it keep the calibration?? i cant calibrate it since i dont have accurate meters / source etc

I’m not sure if using both outputs at the same type USB-A and USB-type-C will work properly… maybe you could tell us what happen when you did it (use a smaller current when testing, if you can configure it)

ill try later on when it arrives. anyway when upgrading . the instruction says check the “reset after flashing” on the program. does it resets calibration? and if i didnt check the “reset after flashing”, does it keep the calibration?? i cant calibrate it since i dont have accurate meters / source etc

thanks

In my case, the voltage readings of my ZY1276 didn’t seem to change (or if it did, it was too small that I hadn’t noticed it) before and after I upgraded its firmware.