Hi all, I just finished the “hardware” part of my led display (see pics from my previous posts). Now I wonder if it is a good idea to add some decoupling capacitors in the circuit. Should I only add one and where in the circuit? Also how do I calculate the value of the capacitor(s). I noticed some minor flickering so I thought a decoupling capacitor might solve this. Also are there any other components that are considered good practice in extending the lifespan of the ledstrip?
What LEDs are you using?
Generally I stick a 1000uF across VCC and GND at the beginning of anything longer than 100 pixels. Sometimes even less. But definitely every 100-count.
@Ashley_M_Kirchner_No if I have a huge strip of 480 LEDs are you suggesting a capacitor every 100? (so 4 or 5 total)
The capacitors I have are quite big and would make for an ugly install if I stick them on the back.
@zut: hi I’m using 192 LPD8806 leds powered by a regulated power supply.
@james: I’m also curious about this. There is only very little info about decoupling caps used on ledstrips.
Any idea of how to calculate the value of the capacitor? Or is this not that important… Maybe someone can post some pics or links with more info?
I’ve used a 1000uF 6.3V