"Kalibracia" cinskeho modulu voltmetra blizsie k realite.

[Nato]

Zdravim,
kupil som z ciny maly modul voltmetra na monitorovanie stavu autobaterie pouzivanej na svietenie v garazi. Modul je od reality posunuty cca 0,35v menej, co je pri posudzovani napatia oloveneho akumulatora dost problem. Je nejaka moznost jednoducho upravit vstup takehoto modulu tak, aby sa viac priblizil k realite?

Dakujem za pripadne napady

[Merak]

skús odmerať napätie na vstupnom konektore modulu, aké je tam

[mac26]

a) Mohol by tam byt odporovy delic - ku odporu ku zemi pridas do serie trimer na zdvihnutie napatia
b) Ta dioda tam nieje seriovo na vstupe ako ochrana? Mozno je to napatie mensie prave o ubytok na tej diode.

[Nato]

Nasiel som navod na ebay stranke predajcu. Bod "Two" hovori nieco nezrozumitelne o jemnom doladeni napatia. Najprv teda vyskusam toto a uvidim

Kód: Vybrať všetko

One,
The back of the board with a white high key, press the button for 3 seconds to display 1-U, release the button, press one second display 2-b, release the button, press one second to display 3-c, release the button, press one second to display 4-d;

Two,
Display 1-U pressed the button for 3 seconds will display fine tuning voltage, then release the button and then press and hold, voltage trimming up, stop by then long press down tuning, can be repeatedly adjusted, until the screen flashes automatically save and exit;

Three,
When displaying 2-b can be adjusted in different cell types, 12.0V represents a single section of 12V lead-acid battery, 3.7V to 3.7V on behalf of a single lithium battery, 3.2V to 3.2V single representative of lithium iron phosphate, 1.2V single representative Festival of 1.2V NiMH batteries;

Fourth,
When displaying 3-c, you can adjust the number of battery section, the number of different types of batteries can be adjusted as follows: Section 12V lead-acid batteries 1-8, 3.7V lithium battery section 2-28, 3.2V lithium-ion battery section 3-32, 1.2 section V NiMH battery 10-70.

Fifth,
When displaying the 4-d, you can adjust the display mode, V is the voltage mode,% percentage mode, V% voltage and percentage cycle.

[Merak]

má toto tvoje čudo nejaký gombík? tlačidlo?

[Nato]

má toto tvoje čudo nejaký gombík? tlačidlo?

Ano ma, na fotke samotneho meraka je na plosaku nalavo od vstupneho konektora.

Aleluja, funguje to Testovaci vyradeny akumulator uz skoncil, kalibroval som to na 12V zdroji.

Dakujem ucastnikom za rady

[elmoto]

Vďaka tebe za info o úspešnom nastavení. Pekný meráčik.

[Marek1975]

supni sem prosim ta niekde link na samotny meracik ak ho mas, dakujem

[Nato]

supni sem prosim ta niekde link na samotny meracik ak ho mas, dakujem

Kupil som to tu:

http://www.ebay.com/itm/12v-Acid-lead-b ... 2749.l2649