💬 Micro (nano) ampere meter (double)

[alexsh1]

I had some spare time and all parts so decided to assemble ampere meter.
Firstly, the sketch has to be changed. The lib Button.h does not exist (it has been renamed). It has to be changed to JC_Button.h. This has to be added to setup {}:

myBtn.begin();

in order for the button to work.

My question is this - reading are jumping like a yo-yo despite having a separate power supply (power bank). After calibration, reading maybe +30% or -30% off needless to say that its drifting dynamically. So constant current of 120uA is read +90 or +150 jumping up and down. Is this the way this meter is supposed to work?

[soroush_habibi]

Can you make a schematic of this circuit please?
I need this project.

[vidalv]

Hello, is there, somewhere, a real complete diagram of this project? This subject is interesting but not clearly documented ... It's a shame! Thank you.

[Enzo65]

Hi, pin A+ and pin B+ are connected together, on the same terminal block?

[metceyn]

@mfalkvidd If you have something related to this project, can you share it? (circuit schema or something)

[mfalkvidd]

@Metin-Can-AYAR sorry, I have nothing.

[Nca78]

@metceyn said in 💬 Micro (nano) ampere meter (double):

@mfalkvidd If you have something related to this project, can you share it? (circuit schema or something)

Hello, I will try to work again on this project in the coming days, I have made one years ago but reused (then broke !) the screen so it's not fonctional now. I will use another screen and make a functional one again as I will need it for some project.

[metceyn]

@Nca78 Thank you for your answer. I'm looking forward.

[metceyn]

@Nca78 Where do i attach the probes? How can i measure?

[metceyn]

Is the result we get ac or dc?

[ligteltelecom]

@Nca78 said in 💬 Micro (nano) ampere meter (double):

@rvendrame sure, I'll do it tomorrow morning as I cannot do it right now. In case I forget, don't hesitate to ring me ;)

Hi to all,

These two resistors are 1K ? (betwen E+ and A+) and (E- and B+) ?
Need I use Diodes to ground ?

[EdCali]

@ligteltelecom said in 💬 Micro (nano) ampere meter (double):

e Diodes to ground ?
There a way you may have a chance to correct me, I have ordered everything I will need to build this project. I need your help to make a Scheme and how to wire part and connect the load, I have to 2 days trying to figuring out but I yet I need to understand it. You are the last user who visited the project. Thank you in advance if you are able to.

[EdCali]

@mfalkvidd HI, There's a way you may help to do a circuit schema I am studying it, but yet I need to understand many thing how to wire it. If are able to. Thanks.

[mfalkvidd]

@EdCali sorry I don’t understand. I don’t know how this device is designed.