State of Charge LED indicator

[cjdelphi]

That's everycircuit for android/ios and chrome for the pc...

it's pretty good for a mobile phone

 

[Martaine2005]

That's everycircuit for android/ios and chrome for the pc...

it's pretty good for a mobile phone

Cheers, going get that right now.
Thank you.

Martin

 

[swu36]

I just quickly made a rough circuit so please don't assume this will work in real life, but with potentiometers you could use this method....

Looks great...This looks like an app?

 

[swu36]

Okay you already answered that...
Also wondering what the U/Q talk was about? I have no idea...

 

[Martaine2005]

Hi swu36,
I can answer that!!!
If you look at your circuit board, you will see 5 black three pinned components.
Beside those components are a letter and number. U1, U2, U3 etc.

They are called reference designators and describe what component should be placed there 'ish'.
Q on a board normally means it's a transistor. U normally means a chip.
C a capacitor and R a resistor etc.
So I didn't think U was a transistor. But it can be depending on the software that printed the board.
That's how I see it.

Martin

 

[swu36]

Hi swu36,
I can answer that!!!
If you look at your circuit board, you will see 5 black three pinned components.
Beside those components are a letter and number. U1, U2, U3 etc.

They are called reference designators and describe what component should be placed there 'ish'.
Q on a board normally means it's a transistor. U normally means a chip.
C a capacitor and R a resistor etc.
So I didn't think U was a transistor. But it can be depending on the software that printed the board.
That's how I see it.

Martin

Thanks! That helped

 

[Arouse1973]

I just quickly made a rough circuit so please don't assume this will work in real life, but with potentiometers you could use this method....

All very nice and all that, but it would be nice to know what the images are, and oh what about the circuit diagram?
Adam

 

[swu36]

I just quickly made a rough circuit so please don't assume this will work in real life, but with potentiometers you could use this method....

So I can see how this would work with however many LEDs, with the number of lit-up LEDs representing the voltage, but how can I get it to display a certain pattern like the one in my gif.?

 

[Martaine2005]

Simple. Drill holes in a circle.

Martin

 

[swu36]

Simple. Drill holes in a circle.

Martin

Not quite sure what you mean...

 

[Martaine2005]

Nor am I..Stella always gets the last word and ruins everything.
A circle with your leds in would give the impression of a clock.
Albeit very slowly!
If you want your leds to chase too, then different circuitry is needed.
Not only different, but repetitive for each drop in voltage.
Possibly meaning the same chaser circuits being triggered for every led as the voltage in the battery drops.
Like 8 circuits for your 8 leds.

Makes sense if you think about your five leds now! each has its own circuit.

Martin

 

[swu36]

Would this be how the circuit cjdelphi drew would work in a 8-LED system? I grounded all the emitters though, not sure if that's alright.

 

[swu36]

Nor am I..Stella always gets the last word and ruins everything.
A circle with your leds in would give the impression of a clock.
Albeit very slowly!
If you want your leds to chase too, then different circuitry is needed.
Not only different, but repetitive for each drop in voltage.
Possibly meaning the same chaser circuits being triggered for every led as the voltage in the battery drops.
Like 8 circuits for your 8 leds.

Makes sense if you think about your five leds now! each has its own circuit.

Martin

Is this where the IC LM3914 comes in? I have zero experience in IC programming and am not sure how that could be done...

 

[Martaine2005]

No programming needed.
Have a little read. The chip does what you want, Here

Martin

 

[swu36]

No programming needed.
Have a little read. The chip does what you want, Here

Martin

Hi Martin, thanks for this! I do see how it can operate under 48V, but not how the voltage-controlled chaser circuit can be realized without any programming?

 

[swu36]

Built this just for fun...it's working-ish...But seriously still don't know about the pattern thing

 

[cjdelphi]

I was dreaming away at 5am lol

(being in Australia sucks)

With every circuit, simply clicking on the resistor then adjusting it's values, but yes that circuit should work fine

 

[cjdelphi]

if you click on a component you can then change things like wavelength / led color..

but point is, by raising lowering voltage the circuit looks fine.. (but... at 50v you really need to aim to have the LED's current max at 20ma)

 

[cjdelphi]

All very nice and all that, but it would be nice to know what the images are, and oh what about the circuit diagram?
Adam

the images are circuits? (confused)
what about the circuit? (just a circuit?)

 

[swu36]

if you click on a component you can then change things like wavelength / led color..

but point is, by raising lowering voltage the circuit looks fine.. (but... at 50v you really need to aim to have the LED's current max at 20ma)

Yeah, but how do I get the circuit to display the pattern using this?