Oh my! This is what I need right now! I'm designing a project, and this video give me a good idea to solve a problem I couldn't make through. Thank you very much!
- The first example is nice to see how it works, but very bad as a battery metter, because a battery at 10v is dead and with 10v that metter have 4 lights on. Maybe changing the values of the resistances or/and adding another one at the input will work as expected. - The 2nd has a good starting, but needs about 15v to lights up all the leds, and a battery has a max voltage of about 13v. Only has 14.4v as much while is charging. Same as above, but this time maybe the problem are the zener values. For me, the best you can do is the third, because uses 10v as minimal voltage, and the max voltage can be regulated to lights up the green lights when is full charged (about 13v), and the white led while is charging for example (above 13v).
Actually, the battery would NOT be dead at 10V. A dead battery has NO VOLTAGE hence the term "dead". Also, the battery puts out 14.4V not when charging, but when it is being used to start the car. Thus, it does NOT have a maximum voltage of 13V.
@@protoborg At 10V is not dead but is worthless, you can not start the car with that voltage. Also, unless the battery is deep discharge resistant with 10V is dying slowly. Probably you will charge it again but the amount of energy that can store will be less and it get worse with every deep discharge. Why did you say that the battery puts 14.4V at start? As far I know it will have lower voltage no higher.
@@RDCST No it is NOT worthless. The car WILL start as it is not the charge that matters. It is the current flow that matters. Batteries have two different voltage readings. A car battery outputs AT 12V, but it doesn't STORE 12V the entire time. Thus a battery that HAS 10V is NOT useless. Further, modern batteries don't have any such thing as "deep discharge" as they are typically deep cycle batteries for safety and longevity. Deep discharge is not that bad. It doesn't actually start to suffer on the first deep discharge. A car battery is rated at NOMINALLY 12V, but they generally run a bit above that.
The 2nd has a good starting, but needs about 15v to lights up all the leds, and a battery has a max voltage of about 13v. How can i improve the design to lights up all the leds at 12.6V? What would be the value of the components to use?
Does this in anyway work with a Lipo 2S? i wanna Check when both cells are at 3.4v so i have to charge the lipo. I wanna build it because i wanna build a 2S Pack for my Bicycle Lamps.
It should be called a Voltage indicator - not battery indicator. A 12V lead akku is empty when it reaches below 11.8V. To achieve this the first diode must be a Zener-Diode of 11V (or nearby). Multiple diodes also could be used, since each is 'loosing' around 0.7V.
@@protoborg - You are referring to "Zero Volts" as "Dead", but if you read Lead Acid Battery Spec Sheets, you'll see the "Discharge Cut-off Voltage, is "10.5 Volts!" Also, many Vehicle Circuits, require a Specific Minimum Voltage, ABOVE that "Cycle Test Cut-off Voltage, of 10.5V! So, for systems operational requirements, saying 11.8V is equal to "Dead" may well be a reality, "In the System ", even though the batter still has Potential Energy in it! Just not enough to operate various systems or circuit elements!
Hi, The zener diode method results in surprisingly hi resolution for its simplicity. In theory I would consider 12.6V & up green for a rested lead acid car battery . While charging, green up to 13.8v, and then changing back to yellow up to 14.v, then amber at 14.6v, then red at 15v, for example. But that is my theory. might not be practical. You have done a great job I think.
I like your logic! Green for best "Nominal Voltages", changing the color shift towards Red, as you move out to the Extreme Ends, of Discharge or Overcharge!
The best way to detect the Battery Voltage is with the LM3914. If you use this chip correctly, you can adjust the Range of the displayed Voltage. So you can set the Range from 0 to 12V but also from 6 to 12V, or 10 to 12V and so on. But if you want a measuring Device with the smallest own Power-consumption you better use a Moving coil measuring device for the right Voltage with the proper precision Resistor for measuring range adjustment.
Lm3914 is the best because it can be calibrated for whatever voltage you desire. Secondly the bar/dot feature expands the confines of your design in the sense that you could light up the LEDs at higher voltages exclusively from the others
The first baterry level indicator is not really a battery indicator, because batteries don't go to 0 volts. Maybe changing the values of the resistors could solve the problem but i wouldn't use it as a battery level indicator
To all those people who apparently do not understand voltage, when a battery is dead, it has 0V as voltage is the measure of the electromotive force. In other words, if there is no charge, there is no voltage. So, yes, a battery CAN reach 0V.
What happens when you try to charge your 12v battery ? Most chargers charge at 14v... So, that means all the LEDs would be ON solid, yes ? Should you add a 13v and 14v zener to show when charging is occurring ??
Hi friend and congratulations for the project if I want to use the ;rst project for a 4s battery pack then composed of 4 3.7V batteries for a ;nal voltage of 14.4V can I still use the 1K resistors or which resistors should I use? Thank you! 🙏
how can we add Digital DC voltage meter.....in this diagram...to show the progressive charge value in voltages....hope to listen from you....Thanks Bro
Hi, thank you for the circuit. I made one. Same with same value components. Problem is, during bar mode, first red LED is on and keeps still during voltage change. I am not sure it stays on during bar mode. At graph mode first 5 LED is OK slowly lighting till 11,25V but afterwards 0.5V change makes all rest of the LED light up. By mistake I cut 4,7K resistor out of the circuit and it start working correct smooth way between 10-13,6V after calibrating with POT... any idea what is going on and what that 4.7K stands for...
Sir I Made this diagram using IC LM3914, but having Problem, that Some time it Show full Indicator & some time It Show only to Indicator. I not able to locate where is Problem.
hola amigo las resistencia son 18k, 47k, o la de 4.7k esque no se porque no me da resultado todo feo me enciende los led o el integrado lm 3915n-1 es igual lm3914n-1
Very good but by convention the LEDs would be green to red as the voltage increases, unless you wish to emphasize a voltage at some point along the range.
Oh my! This is what I need right now! I'm designing a project, and this video give me a good idea to solve a problem I couldn't make through. Thank you very much!
GOOD TICHING KARTE HO AP 👍👌👍👌👍
I like your images used to illustrate assembly - far better than watching a video of soldering only!
this is just what i have been wanting to build thanks for the video ,now i do not need to reinvent the wheel .
- The first example is nice to see how it works, but very bad as a battery metter, because a battery at 10v is dead and with 10v that metter have 4 lights on. Maybe changing the values of the resistances or/and adding another one at the input will work as expected.
- The 2nd has a good starting, but needs about 15v to lights up all the leds, and a battery has a max voltage of about 13v. Only has 14.4v as much while is charging. Same as above, but this time maybe the problem are the zener values.
For me, the best you can do is the third, because uses 10v as minimal voltage, and the max voltage can be regulated to lights up the green lights when is full charged (about 13v), and the white led while is charging for example (above 13v).
Actually, the battery would NOT be dead at 10V. A dead battery has NO VOLTAGE hence the term "dead". Also, the battery puts out 14.4V not when charging, but when it is being used to start the car. Thus, it does NOT have a maximum voltage of 13V.
@@protoborg At 10V is not dead but is worthless, you can not start the car with that voltage.
Also, unless the battery is deep discharge resistant with 10V is dying slowly.
Probably you will charge it again but the amount of energy that can store will be less and it get worse with every deep discharge.
Why did you say that the battery puts 14.4V at start?
As far I know it will have lower voltage no higher.
@@RDCST No it is NOT worthless. The car WILL start as it is not the charge that matters. It is the current flow that matters. Batteries have two different voltage readings. A car battery outputs AT 12V, but it doesn't STORE 12V the entire time. Thus a battery that HAS 10V is NOT useless. Further, modern batteries don't have any such thing as "deep discharge" as they are typically deep cycle batteries for safety and longevity. Deep discharge is not that bad. It doesn't actually start to suffer on the first deep discharge.
A car battery is rated at NOMINALLY 12V, but they generally run a bit above that.
@@protoborg are you a fucking idiot?
@@user-yw8sr3uj1w You're right. YOU are an idiot.
Excellent component arrangement without wire.
Одно из лучших видео по diy, что я видел.
The 2nd has a good starting, but needs about 15v to lights up all the leds, and a battery has a max voltage of about 13v.
How can i improve the design to lights up all the leds at 12.6V?
What would be the value of the components to use?
Subscribed....nice video...greetings from indonesia
Does this in anyway work with a Lipo 2S? i wanna Check when both cells are at 3.4v so i have to charge the lipo. I wanna build it because i wanna build a 2S Pack for my Bicycle Lamps.
youtuber Indonesia, contoh ini video
penyajian visualnya sangat baik
pantas ditiru kalau ingin maju
As soon as I seen the title, I knew a LM3914 was going to be used. It is such a circuit in one DIP chip. Thumbs up!
can this be done with lm3900n and adjustable up to 17 volts with 5 leds?
Good job my friend keep it up ❤❤❤❤❤
It should be called a Voltage indicator - not battery indicator. A 12V lead akku is empty when it reaches below 11.8V. To achieve this the first diode must be a Zener-Diode of 11V (or nearby). Multiple diodes also could be used, since each is 'loosing' around 0.7V.
How exactly would you get a voltage reading off a dead battery? Think before you speak. A dead battery will give a reading of 0V.
@@protoborg - You are referring to "Zero Volts" as "Dead", but if you read Lead Acid Battery Spec Sheets, you'll see the "Discharge Cut-off Voltage, is "10.5 Volts!"
Also, many Vehicle Circuits, require a Specific Minimum Voltage, ABOVE that "Cycle Test Cut-off Voltage, of 10.5V!
So, for systems operational requirements, saying 11.8V is equal to "Dead" may well be a reality, "In the System ", even though the batter still has Potential Energy in it! Just not enough to operate various systems or circuit elements!
Hi, The zener diode method results in surprisingly hi resolution for its simplicity. In theory I would consider 12.6V & up green for a rested lead acid car battery . While charging, green up to 13.8v, and then changing back to yellow up to 14.v, then amber at 14.6v, then red at 15v, for example. But that is my theory. might not be practical. You have done a great job I think.
I like your logic! Green for best "Nominal Voltages", changing the color shift towards Red, as you move out to the Extreme Ends, of Discharge or Overcharge!
Very good. Congratulations.
Very good. How to use for 12 / 24V batteries with 5 leds? Thank you
The best way to detect the Battery Voltage is with the LM3914. If you use this chip correctly, you can adjust the Range of the displayed Voltage. So you can set the Range from 0 to 12V but also from 6 to 12V, or 10 to 12V and so on.
But if you want a measuring Device with the smallest own Power-consumption you better use a Moving coil measuring device for the right Voltage with the proper precision Resistor for measuring range adjustment.
Lm3914 is the best because it can be calibrated for whatever voltage you desire.
Secondly the bar/dot feature expands the confines of your design in the sense that you could light up the LEDs at higher voltages exclusively from the others
sir the lights are in parlel or serios in method no 2?
Ek hi value ke resister se ya different level indicate karega
03:21 second project the diode 8,2v turned led on in 10.5v why ?
Very nice. Professional. Thank You
Schematics in: 0:26; 1:56; 3:56; 3:58
love u dear
ua-cam.com/video/z8SVXHxCeW4/v-deo.html
Kk12345678
00000000000000000000000000000000000
Great little projects... but on the 2nd one, the dude forgot to account for the voltage drop across the diodes ;)
The first baterry level indicator is not really a battery indicator, because batteries don't go to 0 volts. Maybe changing the values of the resistors could solve the problem but i wouldn't use it as a battery level indicator
YES THEY DO!!! That is what we call a dead battery, you fucking twit!
@@protoborg even dead ones contains small amounts of energy and cause very weak voltage
To all those people who apparently do not understand voltage, when a battery is dead, it has 0V as voltage is the measure of the electromotive force. In other words, if there is no charge, there is no voltage. So, yes, a battery CAN reach 0V.
But when a 12V battery becomes dead, it has about 10,5 volts. Get you some of that
@@joeybanana839 No it doesn't. If it did, it wouldn't be dead.
Nice reply
I like that stop motion..
This can really help with my projects if I need to add a battery pack.
What happens when you try to charge your 12v battery ? Most chargers charge at 14v...
So, that means all the LEDs would be ON solid, yes ?
Should you add a 13v and 14v zener to show when charging is occurring ??
Hello...can we indicate more than 12v like 40 V or 54v or up to 84 V please tell me using same design...what modification required..please tell me
Good job. What's the resistance value of each resistor in second model ...
Very good vedio & very clear & good music 😉
Is there any way to do the simple one with only 3 leds ?
que buena música ,me puso alegre y ver con ganas el video
Hi friend and congratulations for the project if I want to use the ;rst project for a 4s battery pack then composed of 4 3.7V batteries for a ;nal voltage of 14.4V can I still use the 1K resistors or which resistors should I use? Thank you! 🙏
1.2k maybe
what an idea
i like it
keep it up! ❤
Super work sir
It is possible to make the last one with 12 blue leds?
Very nice
como se llama esa placa que usa??
how can we add Digital DC voltage meter.....in this diagram...to show the progressive charge value in voltages....hope to listen from you....Thanks Bro
The background audio of this video is so 80s that I think I am watching an old film.😆
Sirji wich part need to change for 24v 20ah battery and wich is cheaper
greetings, and how is the calculation of the resistances, for the circuit with zener, since I need from 12 to 24 volts, thanks for your answer.
Other comments stated a Zener Diode, has a "Loss" (Voltage Drop) of 0.7 Volts, per Diode: so then it becomes a Math Question!
Hi, thank you for the circuit. I made one. Same with same value components. Problem is, during bar mode, first red LED is on and keeps still during voltage change. I am not sure it stays on during bar mode. At graph mode first 5 LED is OK slowly lighting till 11,25V but afterwards 0.5V change makes all rest of the LED light up. By mistake I cut 4,7K resistor out of the circuit and it start working correct smooth way between 10-13,6V after calibrating with POT... any idea what is going on and what that 4.7K stands for...
Add 1 100uf cap in +-
Nice 👍🙂
Beleza..muinto.bom
Nice, I want a model of a 42 volt battery, what is the value of the resistance?
Nice video, thanks :)
Soooooooo much beautiful project lovlyyyyy work
What's the name on the song used in 3:15? I really like that guitar part
Nice video
For simplicity and effectiveness, the #2 is better.
Muito bom esses circuitos.
Great video. Thanks
Отличное видео .Россия.
Hi please projekt for 24 volt, or whar resistor i need, Thanks
Awesome bro
super
Very niCe
Can u make RPM indikator with LED SMD , for motorbike 125cc ?!?!
Dusre step me aap Kitne kitne kilo om ka rajistense lagaya hai
Thanks for very simple but useful circuit. 👍
BTW, what aplication used to edit your video? 🙄
What resistance you use for a 9 v battery
very nice project!!
Sir I Made this diagram using IC LM3914, but having Problem, that Some time it Show full Indicator & some time It Show only to Indicator. I not able to locate where is Problem.
Макетные платы это конечно удобно.. Но всегда круче развести печатную плату, и отфоторезистить её. Зачем я макеток набрал.. Куда их девать теперь)
Bisa ga dibuat level terendah itu 12-12.4v. itu batas terwajar aki low. Kalau sampai 10v itu dah kebangetan sekali low nua, apalagi sampai 0.
hola amigo las resistencia son 18k, 47k, o la de 4.7k esque no se porque no me da resultado todo feo me enciende los led o el integrado lm 3915n-1 es igual lm3914n-1
Beleza.muinto.bom
What model of camera do you use?
Very good but by convention the LEDs would be green to red as the voltage increases, unless you wish to emphasize a voltage at some point along the range.
It,s work for my truck? Can I use the 3er option in order to check the charge level? 10v to 14 v
Yes,
Good job...nice and simple.
#1 me led bulb kitne volt ke hai
Vaiya ame akta 12volt cherger banai c.kintu ataptar onak grom /hit hoya jassa.akhon ame ki korbo.please help me
Parabéns gostei top
Thank you for sharing. Circuit diagram for 'LM3914 BATTERY LEVEL INDICATOR WITH auto cut off' What is T1 transistor number
transistor number is given below the circuit diagram, use any one of them or you can use any general-purpose PNP transistor.. thanks
@@snnyhacksci.5984 I'm sorry I noticed the picture is written in the lower left corner
do we guess the resistor values or just stick any old thing in, and that music. what, why?
could it be made also for 1.5V volts batteries?
How can I make this simple for a 0-5 volt range , same number of LEDs.
Look at the Datatsheet at Page 2:
www.ti.com/lit/ds/symlink/lm3914.pdf
Very nice sir
Интересно.
Sir one blue colour something u have used what is that is it switch . Sir not the 10 k blue resistor..
Yes, that is a small switch..
Kya esko aise hi Lamba kar sakte hai, means
12, 15,18,21,24,...........volt long series Bana sakte hai, work Karega.
yes
Quantos Amperes suporta?
Which one is best
whooo ... Exelente!!
Dans la partie 2 (12 V BATTERY LEVEL INDICATOR) quel est la valeur des résistances. S.V .P
Tankyu boss
Excelente
nice, its simple, thank you very much
exelente
Mantul...
Ghar m ho inverters ki battry hoti h uske liye kon sa shi rhega
LM3914 based circuit
Lovely video.
muito bom.
I love this music more than your Diy indicator 😁
Valores de zeners y resistencias