Dimming this ~30V led with PWM, what do I need? I have a street lamp with a led and simple driver in it, I don't know the exact led voltage but the driver (image attached) says 27-36V DC output, MODEL: 50W.
Is there a part I could place between this driver and the led, so I can control dimming by Arduino via PWM ?
The led driver specs (large image below) says: INPUT; AC 85-285V and OUTPUT: DC 27-36V 1500mA, MODEL: 50W
I thought it would work to put this &quot;PWM power module&quot; between the driver output and the led, but (I tested months ago) I remember it started to blink, I think only when decreasing power but not on full power (controlled by PWM with arduino).

Should it work with this module or I am trying something very wrong ?
Are there any other parts that should work for sure in this situation ?

The specs on the PWM module are these:
Voltage: 5 V - 36 V DC;
Power: 400 W;
Current: 30 A;
PWM Voltage: 3.3-20V;
PWM frequency: 0-20kHz ;
It will not be possible for you to PWM dim your LED with that LED driver (power supply).
That is a constant current driver with under/over-voltage protection. It delivers a specific amount of current (1.5A) and varies the voltage to allow that to happen.
If the voltage rises too high or falls too low then there must be a fault, so it shuts the power off. This is usually because there is either a short (LEDs tend to &quot;fail short&quot;) or an open circuit. The former causes the voltage to drop too low and the latter for it to be too high.
When you insert PWM control you alternate between driving the LEDs and an open circuit. If that open circuit persists too long (low duty cycles) the driver will shut off.
You will need to replace the LED driver (the power supply) with one which includes PWM control internally to it.