Schematics Using 1938 Neopixel/RGB LED's show Incorrect Pin Outs/Labelling

Summary:

KiCAD Schematic drawings such as Standby Altimeter and Airspeed/VVI show the following pinouts for the 1938 Neopixel LED's Pin 1 - DATA_OUT Pin 2 - VSS/GND Pin 3 - VDD +5V Pin 4 - DATA_IN See PCB Snip. Standby Alt Schematic Snip and Standby Altimeter.pdf

Expected Results/How It Should Work:

This would appear to be opposite from the picture shown at the following link https://core-electronics.com.au/neopixel-diffused-5mm-through-hole-led-5-pack.html for ADA-1938 Neopixel LED. If you assume Pin 1 is on the Left side of the picture then all PINS have been transposed, most importantly Power and Ground.

I have not found an actual data sheet for the 1938, even the following link on DigiKey is incorrect, it shows the correct LED but the "Datasheet" link takes you to a WS2812 Surface Mounted LED. https://www.digikey.com.au/en/products/detail/adafruit-industries-llc/1938/6827082?s=N4IgTCBcDaIIwE4DMAOEBdAvkA

Searching for compatible LEDS reveals the APA106 as an alternate. The Pinouts for this device which were tested on an Arduino are as follows: See Datasheet snip. APA106

Pin 1 - DATA_IN Pin 2 - +5V/VDD Pin 3 - VSS/GND Pin 4 - DATA_OUT

Actual Results/How It Does Work:

This would make the PCB drawing incorrect, especially in the context of a Multisided PCB, as the orientation flips when looking from the other side.

The drawing needs to be corrected, probably the KiCad symbol object has the wrong pinouts.
As this is a stand alone Lighting circuit on the PCB it is a simple matter resolve during soldering. (If you make it yourself.) On a PCB the Square Symbol on a device represents Pin 1. however based on the wiring it's opposite.

See Standby Altimeter PCB. If looking from the other side the pins are now in reverse, this should work as its a stand alone circuit on the board. If the LED is mounted as such the wiring through to J1 becomes correct despite Pin 4 or the LED being soldered to Pin1 on the PCB track. J13 - Is correct as DATA_IN and (RED) J1 - is correct as DATA_OUT (YELLOW) Most importantly this also transposes +5V and GND to the correct pins on the LED.

Standby Alt 1938

Screenshots:

See included Pictures

More Information

Add an "X" in the square brackets to check the applicable checkboxs.

jrsteensen / OpenHornet