Hacking the Uni-T UT210E
Good day folks. The time has come for me to get my first clamp meter and I chose the fairly decently priced UT210E. I'm pleased with my overall experience with it so far - it's definitely more than enough for the light usage I'm putting it through. It's not my main meter (I have like 3), so I only wanted it for the clamp feature TBH. It's not my go-to for quick everyday measurements, though I don't see why it can't be.
Anyway, I also read that they're pretty hackable to unlock or modify some features it doesn't come with out of the box, which is right up my alley.
Some of you may know that I brought about this discussion in another post of mine, about measuring the current draw of power windows in my car, but didn't want to digress too far from the original topic, so I opened up a separate thread on this very topic. People have been kind enough to provide resources and even hex codes ready to go, which I might try out as I go (why not - there's some interesting stuff there), however the feature I've been interested in in a meter ever since I got my hands on one as teenager but never seem to get is a proper HOLD function. I want the meter to store the highest value it read and actively update it if I get a spike or surge for instance...you know what I mean. With every one I got so far, the HOLD button just freezes the display regardless of the value and this one is no exception. Some meters seem to get it right, but they're either very expensive or don't measure DC amps. The A and B models of this meter do have such feature for instance, but lack the DC current feature...I reckon it may be possible to implement it.
I had a look at the datasheet for the chip inside, which is a DTM0660 and looking at the schematic on page 17, the MAX/MIN button is connected between pins 23 and 26. I doubt simply connecting them together is enough to activate the function....or is it ?
I reckon the chip doesn't know what to do in that case, so would this require altering the EEPROM or something ? People talk more about unlocking more fancy features like IR communication or increasing the range, but for now I only care about small details like having a bloody MAX function Cheers guys. Thanks for the help.
Anyway, I also read that they're pretty hackable to unlock or modify some features it doesn't come with out of the box, which is right up my alley.
Some of you may know that I brought about this discussion in another post of mine, about measuring the current draw of power windows in my car, but didn't want to digress too far from the original topic, so I opened up a separate thread on this very topic. People have been kind enough to provide resources and even hex codes ready to go, which I might try out as I go (why not - there's some interesting stuff there), however the feature I've been interested in in a meter ever since I got my hands on one as teenager but never seem to get is a proper HOLD function. I want the meter to store the highest value it read and actively update it if I get a spike or surge for instance...you know what I mean. With every one I got so far, the HOLD button just freezes the display regardless of the value and this one is no exception. Some meters seem to get it right, but they're either very expensive or don't measure DC amps. The A and B models of this meter do have such feature for instance, but lack the DC current feature...I reckon it may be possible to implement it.
I had a look at the datasheet for the chip inside, which is a DTM0660 and looking at the schematic on page 17, the MAX/MIN button is connected between pins 23 and 26. I doubt simply connecting them together is enough to activate the function....or is it ?
I reckon the chip doesn't know what to do in that case, so would this require altering the EEPROM or something ? People talk more about unlocking more fancy features like IR communication or increasing the range, but for now I only care about small details like having a bloody MAX function Cheers guys. Thanks for the help.
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