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

Hey. Oh so the new model could convert QC type c to PD? nice . Anyway on zy1276 . I have some questions. So Iā€™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? Thanksā€¦

alsoā€¦ 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

Iā€™m not sure if using both outputs at the same type USB-A and USB-type-C will work properlyā€¦ 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 ā€œreset after flashingā€ on the program. does it resets calibration? and if i didnt check the ā€œreset after flashingā€, 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 didnā€™t seem to change (or if it did, it was too small that I hadnā€™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. Iā€™m waiting for my type c cables. Also. Iā€™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 isnā€™t enough for new features so he needs to remove some to get some) . Havenā€™t tried it yet tho. He said something too about not using it with emarked type c cable. Anyway hereā€™s the fw if you wanna test it. ZY1276 only!! Iā€™ve flashed it successfully.

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

File doesnā€™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 canā€™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.

Youā€™re right, i meant the voltage setting in the STM32 programmer software.
I do have the pogo pins, but canā€™t connect the ZY1273 to flash the firmware 3.1 on it.

Check it out here https://youtu.be/g3foqpBZyjM :wink:

New model out there?

RD AT34 USB 3.0 Color Display Tester dectector And LD35

Seems like a UM24 with smaller display.

Hereā€™s a list with current RD USB meters:
https://rdtech.de.aliexpress.com/store/923042/search?SearchText=usb&origin=n&SortType=price_desc

If thatā€™s the one itā€™s quite cheap, probably much lower quality than YZXstudio?

AFAIK all RD products are good quality. Maybe not better than YZXStudio but probably with slightly better price/quality ratio.

Not lower quality, but just not as many functions.

The quick charge mode identifier is a little less 'smart', and some other functions just aren't there such as PD trigger etc...