Wow this really is the best overview of this little DC volt/ammeter. Above and beyond, man. You even measured the dimensions (there are tons of schematics out there but are vague on where they are measuring).

Amazing content. I designed an enclosure that used this module before I ever had a chance to play around with it. When it arrived, I had no idea what I was doing, now I do, and I don't have to 3D print another enclosure!

This is the best explanation of how to wire these I have found thanks it made it super clear keep up the good work

I've watched a few different videos about these little meters and I have to say, yours is the best! Very clearly detailed and explained well. Liked.

Excellent tutorial, it is so amazing to see you selflessly make these videos so that people can learn from it without any doubts. What amuses me more is that you take care of the minute details while explaining as if you are reading the viewers mind. Really wonderful. Thanks a ton for these tutorials. I am from India and I have become a fan of your tutorials.

Dear Sir, I'm writing to you from Belgium and my home language is not English, so plse be indulgent with my grammatical faults. Many thanks for your interesting and well presented video about the installation of your digital 10 Amp meter and in combination with a voltmeter. If you could spend some time to read me, it would be great. I already have since 40 years an analogue -50/0/+50 Amp gauge from Smiths in use. This was already used in different cars. Now it is installed in a VW Golf MK2 GTI 16V of 1988. It is a gauge functioning with a shunt build inside of it. Now the gauge is becoming a little bit tired and it is not anymore as sensitive as before in order to indicate the uses of small amounts of amperages! This gauge is indicating the consumption of the total amp's of the loads used and also if the alternator is strong enough to produce some extra current to the battery in order to compensate the used Amps by the loads, but also to load some extra amp's into the battery, if necessary. I heard that even when the battery is fully loaded, there is still about 0,5 Amps of current loading the battery? Of course the Amp meter is registering the total electricity consumption of the car, but the starting motor, which is consuming too much amp's, (and would destroy the amp meter), is excluded from the circuit. Now come's finally my questions. Please tell me if I'm wrong or not!? Is it possible to use a digital Amp meter together with an analogue Amp meter? Because, how ever I would like to keep my analogue Smiths Amp meter. Is it possible to connect a digital AMP meter with a shunt in parallel to the two connecting points of my Smiths amp meter (one connecting point has two big wires coming together and the other one has only one big wire), or do I have to use separated (smaller) wires coming from the fuse box or battery or from the alternator? I do not think personally that it will be possible to realize this, as when I want to measure the Amp's with my digital portable Amp meter, I first have to disconnect all the big wires from my Smiths Amp meter gauge, as otherwise I can't measure any amp's at all. Also If I disconnect the big wires from the connecting points of my analogue Smiths Amp meter, the car will not start nor provide any electricity anymore, as the circuit is interrupted! It must be in this case a serial connection, because parallel is only for the volts, isn't it? But in all this I don't have any knowledge at all. Can they possibly work together in harmony or not? Do a digital Amp meter needs a shunt above 10 Amps? But an analogue meter is still working with an internal shunt till 60 Amps, or maybe even above it? My digital portable Amp meter can register amperage's till 20 Amps but only for a short time? Nevertheless the shunt inside of the portable Amp meter seems to be as thick in diameter as the one installed inside of my Smiths gauge, with a bigger reading of 50 Amp instead of the 20 Amp? And also what do you think about a digital Amp meter with a hall sensor? Is this a better and easier solution? Is it less accurate than a shunt, or can't he read the consumption of electricity and the load of the alternator together? So dear Sir, I don't know if my logic is totally correct, but I would like to receive some additional help and expertise from you about the connection and possibilities with a separated shunt and his digital meter (with a more precised Amp's reading), and in combination of still using my old analog Smiths gauge? Sorry for beeing so long, with my questions, explanations and comments. Many thanks in advance for giving me (if possible), an answer! Best regards, Christian.

Thank you sir! The ammeter connection was confusing me because of the common negative for both the volt meter and ammeter parts. I didn't realize that you are only able to measure the amps on the negative size of the load when using a single power supply. Great explanation!

One thing you did not mention was how to zero current meter. These meters do not read negative current. I had one of these units which had a bad zero! i.e. It needed about 1 amp to before the meter started to read. If you had 2 Amp then meter read 1.00 Amp i.e. 1 amp zero error. 1. To fix this link the 2 pads just above the main chip where it says ADJ-Z (see 15:42). 2. Apply power to meter for 1 second. 3. Remove link and re-power meter This zeros current meter and meter then measures current correctly. BTW your zero was OK so you did not need to adjust zero.

Nice and informative video thanks for the same to guide people interested in electronics, When you use a common power below 30 volts DC to power the Voltamp meter the thin black wire should not be connected to the negative along with the thick black wire as it will burn and damage the meter at higher current , for using the meter for voltage higher than 28/30 volts a separate power for the meter using the thin red and thin black wires to be used I have a couple of meters 3 digits & 4 digits on my variable bench power supply & also for my auto cutoff battery chargers, very nice meters from Amazon & Ali Express It has an accuracy correction factor of 0.8 to 1% plus 2 digits for voltage, the amps usually is almost correct but can be adjusted with the “ I ADJ “ pot as explained in this nice video All the best to you

Wonderful explanation,this is the best video I have ever seen. Fabulous 👍👍👍

If you are 3D printing, I have found that the cutout needs to be 26.8 x 45.4 (thickness of 2.5mm worked well for me) - I also chamfered the inside cutout by 1mm or so. Hope that helps

very interesting, thanx, I use the same one for (only) measuring voltage in projects , but did not know about the adjustments!

This is the best tutorial on KZfaq ever !

Super cool detailed explanation - I learned a lot! Muchas gracias!

This is a great instructive tutorial very well presented thank you

Thank you for your time and video, help me a lot. I've got the voltage showing but my amps are lit up with 0.00

Excelente tutorial es muy instructivo,seria muy bueno que todos los demás yotuber en sus vídeos de reparación le pusieran la opción de subtitulos.Saludos desde la Isla.

Exactly what I was searching for thanks!

You are a very good presenter.

Thank you for an excellent tutoriel Greitings from Norway

Thanks for educating.

good job sir from philippines.your new subscriber..

I have this same meter and ampere reading wasn't correct... Now i can easily make it correct thank u

Best tutorial sir!

Great vedio

Nice. Thanks for the interesting video. Please continue!

VERY NICE AND CLEAR VIDEO, I HAVE ONE QUESTION ¿WHAT WOULD HAPPEN IF 15 AMP PASSES THROUGH THE INSTRUMENT?

The analog ammeter has failed in my 6/12V 2 amp trickle 6 amp max charger. Do you suppose this would wire right in and work well?

si pudieras hacer un video de como regular lo que marca el display y a quien hacerle caso si a la fuente de alimentacion que marca un voltaje y corriente o hacerle caso a lo que muestra el display del medidor osea quien da las mediciones mas verdaderas?

Epic video as always. Thank you

Did I miss the part where the meter could mesaure any voltage below 3.3V (or, below dimmer point)?

Thanks

Thank you 😊 best tutorial

Very good video, Thank you very much

does anybody know which is the model of the main IC?, does it have SPI or i2c?

Very good explanation keep it up ^ ^ U helped me a lot thx ; )

Great tutorial! if I change the shunt resistor to read up to 20A what value must the resistor be? Thanks

NB - On the ones I use the two black wires are connected together on the PCB. TIP - removing the PCB makes it easier to fit the unit in a panel. If you reverse the current the unit reads zero amps, I have two of these connected back to back in a PV solar setup, one reads current into the battery, the other current out.

Dear i have question please help i use to power it up with invertor battery it may have some time 14.5 volt while one charging so will work or it may be burn?

Thanks ❤❤

Thanks for the video. Mine was a little different with a two lead small red and black, and three thick black,red and yellow. It powered on with the small red and black attached to 12v. I put the big yellow onto the 12v and got a magic puff of smoke. This surprised me as I though if yellow was the voltmeter line it would read 12v else if part of teh ammeter circuit it would not read. I would appreciate anyone telling me how mine worked, what caused the problem, and potentially how I could fix it.

Thanks for this, I had one die, a 4 bit version (4 digits) I wonder what happened i had a lithium cell + tp4056 charge/discharge module on it. I never had issues with this setup then recently it wouldnt power on, after some investigating (i had it wrapped in heat shrink) I noticed the tp4506 module getting supper hot, it was going to blow! i scambled for a set of plier to cut the battery and managed to do it before it blew up in my face... after taking off the heatshrink i noticed the output of the battery on the t4056 module had lots of extra wire comming off it, which got squished up against an IC creating some kind of short I believe. Then i remember i remounted the display with hot glue and that could of brought that wire into contact, clip your wires after you you solder them on i suppose, there is a chance they can find a way and touch something they shouldnt.

Best tutorial 💞

Hi, what happens if you have the ammeter set up to measure the current going out of a 12V battery and then you charge the battery so the current flows in the opposite direction. Will the ammeter drop to 0 or will it show that the current is reversed ?

thank you

informative.....

Excellent tutorial. is there any way to troubleshoot it? I bought a new one and the screen does not work!

بارك الله بيك

Thanks for the Shunt calculation. Were you by any method able to determine what the digital ammeter impedance is. Is this a 100 mA or is it actually a micro A actual reading, I am looking for a meter with 1 mA range to replace an analog meter in a tube tester and need some more info to calculate if I need an additional series resister to match the analog meter resistance. Thanks

How can we set current limit while using this display. Short circuit on buck but it's not being displayed when red wire for load from display and positive from buck is shorted. It seems wrong my since these are technically our outputs, how can we display Current limit while adjusting for CC??

how to adjust ammeter reading. describe tool and procedure more clearly. i see a small flat screwdriver but i am guessing how much to push, use the corner?, please thank you

man i love it. but mine not reading amps do you know how to fix it? thanks

Nice instructional video! I am wondering what is the load your are using in this video?

Hi, I need to check the battery charging amp using a solar panel. Can I use this meter to check how much current the solar is pumping to charge a 12volt battery? Thanks

Very good. Thanx!

صديق جديد الله ينور عليك

Thank you very much. I though the device could be used as panel meter so I supplied 15Volts to it last night and it vent off, burnt. Mine is PZEM-050 with a specification: DC 5.6 - 100v the current is : 0-100A it came from kikuu with 100A shunt resistor. Please is it good for panel meter??? to measure both voltage and current as well as wattage ?? you are now my teacher so i want to know. Have a nice weekend.

Hi. Thanks a lot for making this detailed video. I watched a ton of other videos and none of them helped until I watched this one. One question that I hope you can answer, what would happen if I were to draw more than 10 amps? I have this connected to a 12v power bank which also has a 220w inverter attached to it. Will it survive a 220w load or will it blow?

I was just looking at these, I needed more than 10amps, like 20aor so, for a battery charger/power supply project, I settled for a amp meter only, I will use a separate volt meter, the amp meter, is 100amp, with a shunt, 100a, 75mv , I wish it was all in one, the shunt is a bit large for the project, on the up side, I do have another use for it, if I decide to not use it, I am converting an old lead acid charger, to also have a power supply to charge lithium batteries, up to 24v 6s, or power any thing reasonable, also shut off when battery voltage reaches a programmable voltage, crazy idea, but I need it, and it is in need of repair!!

There are many versions, and can have problems because of badly written firmware. The display refresh can be much slower than advertised such as 800mS instead of 300ms. The voltage and/or current can have bad tracking accuracy despite being zeroed and the gain trimmers adjusted. The ones that have poor current tracking will also jump over the "0.01"amp reading. The meters I got from Banggood have good current accuracy but poor voltage tracking. If I calibrate at 5V, they will display "31.1" when I apply 30V. And I am powering the meters from constant 5V to the thin red wire.

Great video I was confused now I'm going to have another go. My question what happens if the power supply is reversed will it show a negative or will it fail?

9:42 I thought you were NOT supposed to connect the little black wire when the amp black wire is connected.

In product reviws, reveal, on some of this units, can be celebrated, because the calibration components, don't have the necessary range, to do so. Of course there are ways to wotk around that, but I though people should be aware of that before spending their money. Particularly if they don't have the knowledge or skill, to repair something delivered to the defective.

I must have shorted the thin black wire (it got hot) and now the Amperes stay at 000 all the time. Do you have any idea how I could test or fix this ? Thank you.

thanks dude 😁

I dont know why, but the same type meter that I bought can mesure up to 10+ amperes, may be max to 20A. I use it to mesure my solar panel, and it show the curent is 16a.

How can increase current measurement range this circuit?

Great Video! Question, I am using a single power source for my meter but I want to be able to turn off the meter while leaving the line power on. Do I interrupt the yellow wire for a switch? Thanks

Hi . how to make the 10amps up to 15 amps reading? add more shunt

Thank you so much

How to measure current of dc motor from this meter. Motor operates in both direction.

When powering from the same source, you DO NOT need to connect the thin black wire. Try disconnecting it.

It was a very useful video, I have a question about my problem, I would appreciate it if you could answer it. If possible I need the model number of the diode next to the 7133-1.

Your explanatio??is good. One doubt. If the operating voltage is not steady, will it not affect the functioning of the meter ? How about providing a steady voltage with the help of any 78 series (7805, 06 or 09) ?

Nice Sir !

bueno no entendi que quisiste hacer ya que esta editado el video se notaba al medir el shunt y porque midio 48.7 y en el display solo 3.3 no entendí la exposicion del tema.

How do I wire it just as a volt meter without a load no mesure of amp

I have one that doesn't has a shunt resistor, and it doesn't measure current, how can I fix it? I have no shunt resistor around me so what can I do?

Anyway to get this to read negative voltages?

Hi, can u do a video on arduino flowmeter, which has a LCD display. It is also link to a bluetooth, which can be view on mobile phone. I very interested to learn from you how to do it. Thanks

Excellent video, i have a question please help me , i have a yellow cheap multimeter dt830d i want to check measure current between 6 to 8 amps continuously in series while charging the battery is that possible ? please help how to do it also if not possible let me know how much maximum current ampere i will check continuously on that multimeter for hours thank you in advance

sir how can we use same digital voltmeter ammeter for measurement of 50 to 100 A of current using shunt what changes we have to do in meter

Mr shamshiry what happens if we try to measure voltage with reverse polarity?does shows values or meter burns?

Excelente tutorial. Gostaria de saber se este produto mede tensão invertida assim como o multímetro e indica a inversão com algum símbolo no multímetro quando se mede uma tensão negativa ou se equivoca na ligação da polaridade o multímetro indica com um sinal negativo, no meu projeto gostaria de usar um desses em linha com um pack de bateria o que indicaria o quanto de tensão e corrente está saindo e em carga o quanto esta entrando negativamente...Grato...e viva o compartilhamento...

I apologise for being rude, I should have gone to bed, I have a severe Spinal Injury, the pain was killing me, and I got impatient. The Morphine, left me drugged up. I am bedridden with a heart attack then Pneumonia and can't breath. But its no excuse for being rude. I helped people like you did for 20 years. Becoming bedridden alone, for 10 years is not easy. I will go to sleep when the pain gets bad. That was what I should have done. Being cripled destroyes your life, I have all the same equipment, but cant even get out of bed. I hope I have done something to show I am Sorry.

the pchar no god bcos langosh no god the see .yuo good very good... im aerage bagdad

I bought this for ₹130 which is equal to 1.56$😮😂

Nice..

Nice video. I have a question. What is wrong if I have it connected right(like iit is shown in original schematic), but it is not showing the current. It displays just 0,00A

Hi I've got a quastion. Is it possible to use this volt and ampere meter to check voltage and current from 3 different power sources? I'm thinking of using some kind of switch with 3 inputs and 1 output. Please help me

mine always shows only half the ampere. any idea where the error could be?

This type of meter uses a shunt to measure the current in the ground wire. The thin black wire is also ground. You must NOT connect the thin black wire unless you are powering it from a separate isolated supply such as a separate battery. The video is misleading. If you connect the thin black wire it will affect the current reading. Simply disconnect the thin black wire and the Amps reading will be correct.

Thank you for the video very interesting I have this meter but would like to use it to measure a lower amperage I would like to measure 0-5ma is there an easy way to convert the meter please Thanks if you can help Bob in the Uk

Great video. Can this really measure 10A? I heard this blows when passing more than 5Amps.

Could a 100w 2ohm load resistor be use in this same circumstance? For testing purposes I mean? I'm currently designing a 24v 10amp project and only have a 100w 2ohm load resistor at my disposal!

There is no shunt resistor instead there is r18 resistor I have the same voltmeter can I add shunt resistor

How to calibrate to accurate reading in amps. How to adjust at the back

파이팅

I got a question plz tell me if these meter are protected against short circuit in the output or not?can i use it with battery source without relay protection?

Do you know What is 6228A 1948/33 How can I fix it