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UNI-T UT61E DMM Backlight mod
UNI-T UT61E DMM Backlight mod
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Old 16th August 2015, 03:55 PM   #21
Nisei is offline Nisei  Netherlands
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I've used a touch sensor module with a TTP223 chip but didn't use the UT61E's chip because I don't like the short time-out.
9V from dial switch -> AMS117 5V voltage regulator -> touch module -> resistor -> LED's
Cost less than a dollar.

https://youtu.be/EHStaKB0BwI
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Old 12th October 2015, 03:51 PM   #22
Turbon is offline Turbon  Sweden
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Got miself one of these for about 50$. Not sure in what state it is though. It would be my 4'th DMM. So maybe one of those voltage and frequency standards would be something to buy...

Regards
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Old 12th October 2015, 05:15 PM   #23
Turbon is offline Turbon  Sweden
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Quote:
Originally Posted by Turbon View Post
Got miself one of these for about 50$. Not sure in what state it is though. It would be my 4'th DMM. So maybe one of those voltage and frequency standards would be something to buy...

Regards
What would one search for?

Found it dmm checker. Now how important is it if it shows 5,25V instead of 5.00V if it continues to be consistent? Add to this if all my dmm's showed the same consistent behaviour ? Add again to this if my dmm's showed measurements in R and I backning this? Where would one find a true reference based by physics and not an argued good source (a more expansiva piece of equipment)? Could such an reference be diy'ed? Would it be worth the effort?

Regards

Last edited by Turbon; 12th October 2015 at 05:40 PM.
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Old 12th October 2015, 06:06 PM   #24
PedroDaGr8 is offline PedroDaGr8  United States
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Dmm check plus is what you want. It is a budget transfer standard. Which is good enough for evaluating the basic functions of a meter.

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Last edited by PedroDaGr8; 12th October 2015 at 06:12 PM.
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Old 17th September 2018, 07:35 PM   #25
THX1138b is offline THX1138b  United States
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I'm putting a backlight into my UT61E DMM, controlled by a cheap TTP223 touch sensor module. I would like to know if my intended location for the module and wiring could affect the accuracy of the meter. I wanted to put the module on the front (there seems to be enough room) to avoid threading my wires from front to back but maybe there's a good reason most mods seem be placed at the back? I will test the accuracy before and after using a DMMCHECK Plus at my local maker space but it would be nice to avoid having to rewire my modification if I can.



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