Any one work with a 'ai-on-the-edge-cam' board?

[Jibun-no-Kage]

Any one work with a 'ai-on-the-edge-cam' board?

I was able to flash MP on it fine, just had to use MP firmware image that had camera and PSRAM support.

But I am having issues with the on-board SMDs, it has 4, and on board labeling says GPIO12, but using neopixel, not working as expected, i.e. no response, no LEDs lighting up?

>>> from neopixel import NeoPixel
>>> from machine import Pin
>>> P = Pin(12, Pin.OUT)
>>> NP = NeoPixel(pin=P, n=4)
>>> NP.fill((255,0,0))
>>> NP.write()

So I tried bpp=4 thinking RGBW versus RGB? No joy

So I tried timing=800 thinking 800 versus 400 timing? No joy

Am I missing something obvious here?

[scruss]

Prokyder's AI-On-The-Edge-Cam?

From the schematic (prokyber/ai-on-the-edge-cam-hw-description), looks like Pin 46 (PER_EN) needs to be high to enable these things. They look like stock WS2812B LEDs otherwise.

[Jibun-no-Kage]

@scruss Thanks man! Been a while since we have crossed paths in the discussions/forum.

The back of the board just references pin 48... which is the on-board 'white' LED, which works as expected, just a Pin.OUT and value 0,1. And the board references pin 12, which to me appears to be 3 hole header for additional external LEDs, so I soldered header and connected a NeoPixel, and tried that, no joy.

When I got the board, the boot code would turn on each LED, 1,2 seemed to always be one, 3,4 turned on as Ethernet was connected, and camera connected. So not sure about pin 46... frankly I did check the schematics in detail, I was using some documentation via Google, guess they were explicitly setting it high? I will give that a shot.

[scruss]

Here's my badly mashed/highlighted version of page two of the schematic. PER_EN (GPIO 46) switches 3.3 V via a pair of MOSFETs, so the LEDs aren't going going to do much unless this is switched high. The LEDS signal is the usual WS2812B data line, which is broken out on Pin 2 of the header. A meter across pins 1 (V) & 3 (GND) of the header should show zero if PER_EN is low.

I use a different syntax for initializing NeoPixels:

NP = NeoPixel(pin=P, 4)

but if what you have works for you, enjoy.

[Jibun-no-Kage]

Yeah... NeoPixel(pin=P, 4) is cool, I tend to assign explicitly, so NeoPixel(pin=4, num=4) for example.