Thank you, yes, I’m about to buy this one, mainly for the graphing capabilities. There are 3 functions I’m looking for, and no small meter has them all (I think the ZY1276 does):
- Protocol identification - RD’s AT34 (it’s like the comprehensive one, but with a color screen), Atorch 12 in 1, a couple of the 3 or 4 line OLED display ones, and the big screen ones like the UM24/ZY1xxx. Some only give D+/D- voltages instead of identifying the protocol, but I think it’s supposed to be good enough since the protocol changes anyway.
- Protocol emulation - a few of RD’s smaller ones in the table I posted above. The AT34 doesn’t. ZY1270, and I think the ZY1276 does a few protocols.
- Graphing - the comprehensive one you posted is the only small meter that does this.
I actually just bought this one 7.38€ |GWUNW BY58U USB 3.0(2.0) OLED 5 bit Spannung Tester Meter voltmeter Strom Amperemeter tester Batterie Kapazität Voltmeter|voltmeter ammeter|ammeter voltmetertester detector - AliExpress
It’s got high precision, D+/D- readings, protocol emulation, only thing I need is the graphing capability.
I’m hesitant to buy the big ones now because I just noticed they’re all exposed. Isn’t it an electrical hazard to have live voltages all over the place, especially when they go up to 30 V?