People I did this project, there is something missing here, is the A0, make sure is conected to X. DONT use Jumpers and make sure if you are using nano that you are feeding the MUX with 5V not with the 3.3V
Great project , fast reading and very useful in daily life of a technician. And yes, ofcourse you should talk more about the logic behind the programming and circuitry.
Hi there I just wanted to say what a brilliant video I've been wanting to billd a test meter and then send the reading over LORA to a remote reader for diagnostic purposes as part of my job. When I get my laptop back up and running again this has made it to the top of the list. Thanks again
Cool project ! Design a spring clamp that holds the resistor and all the electronics so you can squeeze a handle to open a set of contacts and insert a resistor and test it then squeeze and release then do it all again for another resistor would be so much better than fiddling with multimeter leads .
Could you expand the project to have a miliohm as well, not only ohms? If you can do it, I can design a PCB for it, and ppl will be able to order PCBs and build it as a permanent meter to use. And, if you'd have too much time, how about ESP32 dev board to use with CH304A and create a Bluetooth connection with a PC to display scores on the PC/laptop? That would be amazing :). What do you say? Happy with my 2 ideas for the next videos?
I have looked at quite a few of these videos and your auto-ranging ohmmeter looks to be the best so far. Thanks for posting it. I have a question, though. I do not have a 220 µF 16V Capacitor. I do have a 220 µF 10V Capacitor. Will that work (not too clear about allowable capacitor substitutions)?
I have some 74HC4051E's here at home. Also they are only 47 cents at Tayda, vs like over $5 for the 4617 on ebay. Is it okay to use them instead of the Max4617?
This is great to be able to control an ohmmeter like this with arduino. I have some homemade vactrols (LED/LDR) and I do analogWrites (PWM) to them to act as a variable voltage controlled resistors. Since these are homemade I want to test all 255 PWM writes to get the resulting resistance for each. Using this arduino multimeter I can automate this entire process. So I can generate say a comma delimited list of 255 resistances for a given vactrol and then export that into a spreadsheet or database for future reference :)
What if i want to calculate the resitance in the water so I can then calculate the conductivity?If I go with dc the water will go trough electrolysis so I think I need a square wave. Will this work with a square wave instead of dc?
People I did this project, there is something missing here, is the A0, make sure is conected to X. DONT use Jumpers and make sure if you are using nano that you are feeding the MUX with 5V not with the 3.3V
Great project , fast reading and very useful in daily life of a technician. And yes, ofcourse you should talk more about the logic behind the programming and circuitry.
Hi there I just wanted to say what a brilliant video I've been wanting to billd a test meter and then send the reading over LORA to a remote reader for diagnostic purposes as part of my job. When I get my laptop back up and running again this has made it to the top of the list. Thanks again
Thanks Paul! I love the idea of sending the reading off to a remote device.
@@programmingelectronics Hi there it's hopefully like having 30 meter test leads on your meter
I’m gonna build this today!!
Cool! It doesn’t take long to put together and I think it would work fun is a smaller more compact form factor.
Cool project !
Design a spring clamp that holds the resistor and all the electronics so you can squeeze a handle to open a set of contacts and insert a resistor and test it then squeeze and release then do it all again for another resistor would be so much better than fiddling with multimeter leads .
Great idea!!! Thank you! I love the idea of having an enclosure as well.
Great project
Thanks for sharing your idears and code :-)
Thanks a ton!!
Could you expand the project to have a miliohm as well, not only ohms?
If you can do it, I can design a PCB for it, and ppl will be able to order PCBs and build it as a permanent meter to use. And, if you'd have too much time, how about ESP32 dev board to use with CH304A and create a Bluetooth connection with a PC to display scores on the PC/laptop? That would be amazing :).
What do you say? Happy with my 2 ideas for the next videos?
I have looked at quite a few of these videos and your auto-ranging ohmmeter looks to be the best so far. Thanks for posting it. I have a question, though. I do not have a 220 µF 16V Capacitor. I do have a 220 µF 10V Capacitor. Will that work (not too clear about allowable capacitor substitutions)?
I got the shakes every day since the plandemic started.
Another great video Sir. I really need some cool projects to put my mind to rest
Glad I’m not the only one with the shakes :)
Can i use CD74HC4051E instead of MAX4617? Please help me
I have some 74HC4051E's here at home. Also they are only 47 cents at Tayda, vs like over $5 for the 4617 on ebay. Is it okay to use them instead of the Max4617?
Hi there, I just got the same one, it worked?
much better if we try to a regular LCD insted. 😁✌️but great i love this topic.thanks sir.
Thanks for watching! Any reason you're not found of the OLEDs?
Impressed
This is great to be able to control an ohmmeter like this with arduino. I have some homemade vactrols (LED/LDR) and I do analogWrites (PWM) to them to act as a variable voltage controlled resistors. Since these are homemade I want to test all 255 PWM writes to get the resulting resistance for each. Using this arduino multimeter I can automate this entire process. So I can generate say a comma delimited list of 255 resistances for a given vactrol and then export that into a spreadsheet or database for future reference :)
Very cool!!
Amazing 👍
Thanks!
Nice project!
can this project measure in megaohms
What if i want to calculate the resitance in the water so I can then calculate the conductivity?If I go with dc the water will go trough electrolysis so I think I need a square wave. Will this work with a square wave instead of dc?
good!
Thanks for watching!
is it possible to do this with a 3.3v arduino?
Where is the link
it's the second link in the description:
bit.ly/3CD894k
What the gear on clip