i cant figure out what im doing wrong. im running the arduino RGB tutorial sketch on my arduino uno. it works fine with my RGB diode from “the most complete starter kit”.
T-1 3/4 (5mm) FULL COLOR LED LAMP - Part Number: L-154A4SURKQBDZGC
I bought some more RGB diodes from gearbest webstore and they dont work with the same sketch / hardware setup.
Forward Voltage (V) : 1.9 - 2.1V 3.0 - 3.4V
Maximum reverse voltage: VR 5 (v)
Forward For dc current: 20mA
They nearly have the same specs but dont light up. i tested them in another projects and they are working fine so im sure they are not broken.
What am i doing wrong?