Your image looks to be a TO220 case and if you have it like the drawing I posted it should work. That assumes your polarities are correct. In my image, as drawn, left to right the transistor pins are Base, Collector and Emitter. Your LED strip should have 12 volts (+) applied and you are switching the (-) side using the transistor.
You can move the base resistor to +5 volts and see if the LED strip turns on. That's the idea of driving pin 9 high.
Understood, thanks, I tried connected the base with resistor accross 5V pin and still no luck. By the way, if they do not light up in 10 seconds I turn off my power supply. Does the circuit need time to get saturated or something?
Or you can always go with the relay , although making the LEDs fade would then be problematic.
Thanks, I can't use a relay because eventually I am going to make these LEDs sound reactive so only this cricut can do that.
Thanks for the pics and the closeup of the transistor connections.
With that code running the LEds should be ON all the time.
Do you have a DMM?
If not do you have an LED and say a 1K or 470R resistor?
Did you try moving the pin9 end of the jumper off pin9 and connect it to 5V, so that the base has current flowing from 5V through the 220R?
Thanks, Yes I have a digital multimeter, LED, and yes I do have a 470 ohms resistor also. Are we going to test our circuit with a smaller led?
Yes I did try to move the jumper from pin 9 to the 5V pin, and still no luck. By the way, I turn off the power supply in 10 seconds if the lights don't light up, do I need to give them some time to saturate or something?
UPDATE - Please see next page.