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
9V from dial switch -> AMS117 5V voltage regulator -> touch module -> resistor -> LED's
Cost less than a dollar.
https://youtu.be/EHStaKB0BwI
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
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:
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.
Sent from my LG-ls990 using Tapatalk
Sent from my LG-ls990 using Tapatalk
Last edited:
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.
- Status
- Not open for further replies.