20W Flood RGB LED driver board (WS2811)

[mharnish]

Tried but no luck. Should I ship these 2 boards to you?

Thanks,
Mark

[mharnish]

Hi Rob, your Inbox is full. Did you receive the 2 boards I sent you last week?

Thanks again for everything!

Mark

[bflugan]

I need some help. I soldered 8 of these and I'm unable to get much of anything out of any of them. I have a 24v Meanwell power supply going into an Alphapix 4 Controller (also have tried an SP105E Magic Controller was able to get a white stuck on but nothing else). I get nothing. I've tested these controllers with other pixels and they work. So, best I can tell, it's down to the boards.

I've metered across V+ and GND and get a steady 23.75-24 VDC. I don't believe I have the ability to check much else on the boards safely.

The IC's and other components seem to be in the correct places.

Attached some images for you to look at. Any ideas?
Bottom.jpg
Top.jpg
Setup.jpg

[toozie21]

Nothing popped out to me in a cursory glance, but one word of warning for you: When using DC voltage, Red is quite often VCC (it was what I noticed and figured might have been your problem). Just a heads up.

I need some help. I soldered 8 of these and I'm unable to get much of anything out of any of them. I have a 24v Meanwell power supply going into an Alphapix 4 Controller (also have tried an SP105E Magic Controller was able to get a white stuck on but nothing else). I get nothing. I've tested these controllers with other pixels and they work. So, best I can tell, it's down to the boards.

I've metered across V+ and GND and get a steady 23.75-24 VDC. I don't believe I have the ability to check much else on the boards safely.

The IC's and other components seem to be in the correct places.

Attached some images for you to look at. Any ideas?
Bottom.jpg
Top.jpg
Setup.jpg

[RobG]

Hmm, looks like C2 and C3 are swapped, 0.1uF on the input would definitely prevent it from working.

[bflugan]

Hmm, looks like C2 and C3 are swapped, 0.1uF on the input would definitely prevent it from working.

You're the man! Switched them and it works. Confident that is the problem with the rest.

[mharnish]

Check to make sure 2N3904 and 78L05 are in correct place.
Try removing some of the solder from T1-T3, too much solder on pads can sometimes cause short to GND plane.
If they still don't work after that, I can fix them for you.

Hi Rob, any luck getting those 20W floods I sent you working? My show goes live on Friday and I was hoping to have them for then. Let me know.

Thanks,
Mark Harnishfeger

[RobG]

20W WS2811 driver board kit is now discontinued.

[RobG]

Say hello to the new 20W WS2811 driver board (it's not a kit anymore.)
The new boards will be fully assembled and tested or require minimal soldering (LED and inductors,) will decide tonight.

IMG_7790.jpgIMG_7791.jpg

[rhildinger]

I can see why you want to go to pre-assembled boards to reduce or eliminate post-sale issues - its a smart move. The only thing that concerns me about your new board is the placement of the surface mount cap and the inductors. Won't their height cause issues with the reflector in the standard 20W fixtures we've been using with these boards?