working 5A 5V PSU output voltage 5.5 to 5.7 Voltage at LED 5.7
not working 5A 5V output voltage 5.0 to 5.1 Voltage at LED 5.1
not working 20A 5V output voltage 4.8 to 4.9 Voltage at LED 4.9
Each LED strip is around 1.2 mts long
So I was thinking of supplying 6 Volts
What would be the best way for that
i] Using a voltage regulator IC LM7606 IC per strip as its A is limited to 2A
ii] If I can use a voltage regulator of 6V 10A but I could not find it
iii] Using buck convertor to step down 12V 5A to 6V
iv] Any way to step up 5V 10A to 6V
v] Direct 6V PSU but not available pretty rare
WS2812B LEDs should work even at 4V, you probably have some other problem.
Measure the voltage of the LED-strip itself when you turn it on.
Also, how can your 5V power supply output 5.7V? 15% above nominal...
That depends on your code. If you run them all white at max brightness, 60 LEDs can draw almost 3A. For one color only 1A is enough.
Those LEDs are rated max 5V, you shouldn't drive them at 6V.
Also, since your signal from Esp32 is 3.3V, supply voltage ideally shouldn't be above 4.7V.
1] Go for higher Volts for stable system
According to datasheet WS2812B can take 5.5V (+- 0.5 V) so 5 to 6V.
According to actual readings at LED 5.8V higher is more stable than 4.9V
In same setup Higher Volts PSU works while lower Volts PSU does not
2] Go for lower voltage as signal should be readable
According to reading various blogs articles signal at LED should be V at LED x 0.7
ESP output is 3.3V so max V at LED should be 4.7V
WS2812B LEDs should work even at 4V, you probably have some other problem.
like what?
Measure the voltage of the LED-strip itself when you turn it on.
working 5A 5V PSU output voltage 5.5 to 5.7 Voltage at LED 5.7
not working 5A 5V output voltage 5.0 to 5.1 Voltage at LED 5.1
not working 20A 5V output voltage 4.8 to 4.9 Voltage at LED 4.9
Also, how can your 5V power supply output 5.7V? 15% above nominal...
It has adjustment pot, other 5V 5A PSU can go +-0.3V around 5V but this one goes higher!
That depends on your code. If you run them all white at max brightness, 60 LEDs can draw almost 3A. For one color only 1A is enough.
It has a colour gradient red orange yellow green, code attached above in post #19
Those LEDs are rated max 5V, you shouldn't drive them at 6V.
Agreed but it was the only case where things were working fine.
I will try stepping up signal from 3.3V to 5V using but this did not work for me last time i tried
I have never had any problem with 4-5V, that's why I suspect you have some other issue. And neither heard others had.
How is your wiring for power? Short and thick enough to carry few amps /strip without noticeable voltage drop?
Also, you should add capacitor across every strip power leads.
Just keep the brightness low enough to stay below 1A if that's your limit.
readings are when LEDs are on in gradient colour.
I do not think less Amps is the problem here as 12 LED strips are running fine on 5A 5V
but when I used 20A 5V for 12 LED strips then random LEDs and random colours are seen
Wiring is short under 30 cm and in past I have run multiple servos on those wires without any issues.
I do have a 220uf capacitor on every LED strip circuit diagram in post # 19
I am on a tight schedule any suggestion about possible problem would be helpful.
Thank you.
