I’m starting to think consistency isn’t Ray Wu’s strong suit. These are from the same batch.
Good thing USB ports are smart enough to cut power when presented with strange situations. I probably would have killed an LED ring if I’d had this hooked up to my bench supply.
Not just the connectors - but also the layout of rows on the strips - I have two strips of APA102 - one of which is (Ground | Data | Clock | 5v) the other of which is (5v | Data | Clock | Ground) … in both cases, the wire ordering is (Black | Green | Red | Blue) … yes - one of the sets of strips had 5v on the black wire… (o.O) – i’ve taken to cutting/re-wiring my own connectors at the end of each strip to make my life a bit saner
Yikes. I’m glad I saw this. I’ll be more paranoid before I hook my next strip, and not just trust the color scheme. I usually look fairly closely anyways, just to be sure I’ve got the “IN” vs “OUT” correct, but it would be easy to miss swapped GND/V+.
Since I use a lot of salvaged wire for my electronic projects, I’ve gotten in the habit of not assuming the correct color is in the correct place. When I can, and when I remember, I often use colored shrink tube at the connection end of wires to help get things right. For example, I’ll make sure all the signal wire connections for LED strips have a yellow end… or when I salvage power sources (wall warts, laptop bricks) with black/black-white output wires, I’ll add red shrink tube to the end of the positive wire.
Instead of cutting and soldering, you can also pop the wires out of the connector and reassemble them in the way you want.
@Kelvin_Mead They’re JST-SM connectors (sometimes shortened to JST, which is the name of the manufacturer, but they make a lot of different connectors).