I'm using Arduino Uno with a 12V RGB Signal Amplifier and a 12V RGB LED strip. 12VDC is supplied to the amplifier.
However the LED strips does not light up whether the PWN pins are set to either 0
or 255
.
analogWrite(ledPinR, 255);
analogWrite(ledPinG, 255);
analogWrite(ledPinB, 255);
When set to 255
, the OUTPUT R,G,B pins have a voltage of 6.3 V
to 8.6 V
, while the INPUT R,G,B pins are about 4.7 V
.
The OUTPUT pin voltages does not change whether the INPUT pins are at 0V or 5V.
The RGB strips light up when I connect the POWER -
terminal to any of the OUTPUT R,G,B terminals.
What can be done to allow the Arduino to light up the LED strips?