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

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.

Please read my PMs thanks :slight_smile:

Guys I have great news. So my ZY1276 just came in the mail. After trying it. I was so confused of the firmware version. Its already on 3.36D . And it appears that I have the new ZY1276P version (I know cuz when it shows the model number when you holding button bfore going to configuration mode) okay. So basically. I should be able to check emarker without PD adapter. No documentation yet. So idk. I’m waiting for my type c cables. Also. I’ve found a closed beta firmware . 3.36E (newer than stable) it removed some Chinese text. And vooc check . For beta testing QC to PD 2!! (He said the memory isn’t enough for new features so he needs to remove some to get some) . Haven’t tried it yet tho. He said something too about not using it with emarked type c cable. Anyway here’s the fw if you wanna test it. ZY1276 only!! I’ve flashed it successfully.

Fw : https://mega.nz/#![](WFkRUSCA)RDdOOFOaqEt8DM_kchLiokDeEIp1mf2m3h95Pq5siLg

File doesn’t exist. Please upload it to mega.nz or similar.

Updated!!

please read my pm thank you :slight_smile:

Any news about the ZY1280 ?

Anyone able to update the ZY1273?
I even can’t change the voltage from 4.0 to 1.8V.

What do you mean sir by changing voltage from 4.0 to 1.8v?

Do you mean calibrating the voltage of the ZY1273 from the Settings menu?

If the ZY1273 uses the same firmware flashing method as the ZY1276, then it needs the STM32 programmer device and proper cable/pogo pins to update.