Hi all, I'm new to this forum and in digital design
I'm looking for tips and techniques to keep the power usage down in a project that uses many leds/indicator lights. I only have a singles usb-connectors power (500 milliamps).
Consider this flashy midi controller thing from Akai:
There must be aprox. 400 rgb leds/single color leds/led indicators powered straight from the usb.
When i look at rgb-leds (neopixels for instance) they seem to be pretty power hungry unsing 0.2-0.6 milliamps each. The smaller ones and indicators use less i figure, but still I wonder:
How is this even possible with only 500mA?
I'm looking for tips and techniques to keep the power usage down in a project that uses many leds/indicator lights. I only have a singles usb-connectors power (500 milliamps).
Consider this flashy midi controller thing from Akai:
There must be aprox. 400 rgb leds/single color leds/led indicators powered straight from the usb.
When i look at rgb-leds (neopixels for instance) they seem to be pretty power hungry unsing 0.2-0.6 milliamps each. The smaller ones and indicators use less i figure, but still I wonder:
How is this even possible with only 500mA?