Grumpy_Mike:
That means absolutely nothing. I have a totally FUCT ( Further Use Completely Terminated ) neopixel matrix and some LEDs light or flicker when power is applied to it. I know it is FUCTed because I accidentally attached a 12V power supply to it instead of a 5V one. When a part is dead it is not always unresponsive, it sometimes partially works but not enough to be useful.
so i fuct(ed) up the leds. after discussing the matter with one of my teacher he mentioned "the moment an power transistor (2n3055) overheats it wil cross the referred current, 5v in your case. and it could supply up to 19.4v. but you dont know if that happened, since you model still works"
i guess I'll have to cut the whole strip to pieces and test 1 LED at a time. it was only €2.
and ive ordered a new strip, 5m this time.
Grumpy_Mike:
That means absolutely nothing. I have a totally FUCT ( Further Use Completely Terminated ) neopixel matrix and some LEDs light or flicker when power is applied to it. I know it is FUCTed because I accidentally attached a 12V power supply to it instead of a 5V one. When a part is dead it is not always unresponsive, it sometimes partially works but not enough to be useful.
Wawa:
And... you're about to blow up the Nano as well.
There is a "500mA absolute max" diode between the USB supply and 5volt pin.
Powering more than eight (8*60mA) addressable LEDs from that 5volt pin will send that diode to silicon heaven.
What voltage did you use on the input of that linear 5volt supply.
144 LEDs could use 8.5Amp. That's 8.5watt for every volt above 5volt.
= ~60watt with a 12volt input and an all white strip.
A 2N3055 without heatsink might be able to dissipate ~3watt.
Use a 5volt/10Amp switching supply for 144 LEDs.
Leo..
im using an old laptop charger to power the psu, 19.4V and 3.65A, is 70W. so that should be enough. since 1440,0605= is only 43.2 Watt.
after doing some tests i found out the 2n3055 survived it. and yes it needs an heatsink. this is just a proto anyways.(ive got a pc/cpu heatsink for him ready)
and we fried the nano years ago at school, so it hasnt got the Schottky diode to help it protect its 5V.. i only use it in proto's and with fused cables.
but i tested the strip with several psu, but only those 6 leds would light up. so i knew i would damage the arduino. and i used the blink test program. so that would light up only 1 LED.