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GeoMar

Volt-Ampermetru cu PIC 16F676 & 74HC595 & Digiti LED

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Vreau sa va prezint un proiect de Volt-Ampermetru realizat cu PIC 16F676 & 74HC595 & Digiti LED, proiect preluat de aici http://ur5kby.at.ua/publ/skrinja/iz_moi ... 5/6-1-0-62 si realizat/testat de mine.

Pentru a putea vizualiza si descarca atasamentele trebuie sa aveti obligatoriu cont.

 

Schema acestui Volt-Ampermetru este postata mai jos, asa cum se vede si in schema, "sufletul" acestui Volt-Ampermetrului este un PIC destul de "accesibil" ca pret, PIC 16F676.

 

Posted Image

 

Schema la rezolutie mai mare:

Voltmetru PIC16F676 & 74HC595 & Digiti LED.rar[/attachment]

 

Acestea sunt fisierele PDF scara 1:1 pentru Volt-Ampermetru cu PIC 16F676 & 74HC595 & Digiti LED, Adaptorul pentru digiti LED si alimentatorul V-A metrului.

 

Cablaj & Silk ptr Adaptor digiti & Alimentator.pdf

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Guest marian_ariciuc

un mare UP de la mine! :aplauze

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SUPER proiect !proiectare,realizare,detalii concrete.....parca as dota un redresor auto cu acest modul,avand in vedere pt low cost..... si de la mine un mare UP !

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Colegul GeoMar mare artist ca de obicei, pun si eu un semn aici ca e de importanta majora (cel putin pentru mine) acest topic.

Felicirari pentru realizare si va multumesc ca impartiti realizarile Dvs si cu noi . :da

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FELICITARI!TOATA ADMIRATIA PENTRU PROIECT,DAR SI PENTRU ROLUL DE AVANGARDA -LOCOMOTIVA A FORUMULUI.Avem ce invata dar si de la cine invata!

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Multumesc frumos tuturor pentru apreciere. :aplauze

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Super proiectul, felicitări și mulțumim. Am și eu 676 prin sertar.O întrebare, cu ce rezoluție afișează curentul? Am citit în postare :

Pentru A v-a indica ceva gen 0,269A FARA sarcina la iesirea sursei.

Să înțeleg că afișează cu rezoluție de 1mA ! Din poze nu pare așa.

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Hello.
I made for your PCB.
Component values corresponding file Cablaj_V-A_cu_P.lay
With all good voltmeter
But Ammeter greatly overstates
at startup 0,29A, adjust the correction in ZERO
but now values much too high
on the test ammeter 0,35A, on display 1А
on the test ammeter 1A, on display 2А

on the test ammeter 2A, on display over 3А

what could be the problem?

power LM2904 - 5V, shunt 0,01R from the dead DT-832

firmware vaDCw2L8UAcc.hex, voltage divider 1:20 (91К)

https://www.dropbox.com/s/ezdpknwovlxqr2i/IMG_0047.JPG?dl=0

https://www.dropbox.com/s/y5o2nll8tjmpix2/IMG_0051.JPG?dl=0

https://www.dropbox.com/s/txpcsej5hvuivih/IMG_0055.JPG?dl=0

Edited by Денис Нестеренко

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Hello.
If shunt is 0,01R, then check parts of the resistive divider value to be indicated in the diagram.
After making than I've tested, I have not installed in the source below.
Sorry for English, Google Translate.
Edited by GeoMar

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hhmm , something I think is wrong , Denis, your first display shown the current (amps) but geomar"s show voltage . Am I wrong?

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Hello.
If shunt is 0,01R, then check parts of the resistive divider value to be indicated in the diagram.
After making than I've tested, I have not installed in the source below.
Sorry for English, Google Translate.

 

values voltage divider circuit

https://www.dropbox.com/s/vye9zoszxdd0obj/GeoMar%20PCB%20PCB%20resistive%20divider%20value.gif?dl=0

 

hhmm , something I think is wrong , Denis, your first display shown the current (amps) but geomar"s show voltage . Am I wrong?

All right
the indicators can be interchanged button "H" :)

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values voltage divider circuit

 

...

 

Try changing this resistance, higher, lower see what results you get.
This adjusts the gain if the 0.36 point 1A, first resistance exclude see what results you get.
If it is not positive, try larger than 15k and see the result.
As I wrote, I just tested it, I have not yet installed the power to verify whether the correct measure A.

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Try changing this resistance, higher, lower see what results you get.
This adjusts the gain if the 0.36 point 1A, first resistance exclude see what results you get.
If it is not positive, try larger than 15k and see the result.
As I wrote, I just tested it, I have not yet installed the power to verify whether the correct measure A.

 

Thanks for the advice, I will try

 

p.s. Dear GeoMar, write better in Romanian, so it will be easier to transfer :)

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Domnule GeoMar

Doresc să realizez si eu acest proiect. Mai puteti posta inca o data fisierul hex?

Adresa de unde ati preluat proiectul nu mai este valabila.

Multumesc.

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