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bigtreetech / BIGTREETECH-SKR-mini-E3

BIGTREETECH SKR-mini-E3 motherboard is a ultra-quiet, low-power, high-quality 3D printing machine control board. It is launched by the 3D printing team of Shenzhen BIGTREE technology co., LTD. This board is specially tailored for Ender 3 printer, perfectly replacing the original Ender3 printer motherboard.
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Feature Request: Get Neopixel working #21

Open Chaotnix opened 4 years ago

Chaotnix commented 4 years ago

I would like to use Neopixels on my Printer.

By default Adafruit Neopixel is in lib_ignore in plattform.io for STM32F1 boards, because of compile errors regarding gpio_set, gpio_clear and time funktions. Also Neopixel has no support for STM32F1 cpu yet.

I tried to copy LPC1768 parts and change to TARGET_STM32F1. This lead me to the same compile errors.

I also tried to use bigtreetech/Adafruit_NeoPixel. This compiles ok, but unfortunately does not work.

Is there anything, we can do to use Neopixels?

mmende commented 4 years ago

I have the same issue but made some progress. One main issue seems to be the DCDC5V v1.0 power module not delivering any output. I plan to use a 24 neopixel ring. As the documentation says here for more than 8 LEDs the jumper should be on the left so that the power is not provided by the board 5V power supply but rather from the DCDC5V v1.0 power module which should be able to supply enough power for up to 30 pixels. However when the jumper is on the left I measure 0 voltage between +5V and ground in this configuration. Fortunately I had a 8 pixel strip lying around to test the on board power supply configuration and tada the NEOPIXEL_STARTUP_TEST was visible and I could control the pixels with the M150 gcode. Unfortunately there seem to be some timing issue for the signal because even though configured correctly for 8 pixels the shown color rarely is on point with the desired color send with the M150 command. The question is now how to get the DCDC5V v1.0 power module working. I just hope the timing issue can/will be fixed in the bigtreetech/Adafruit_NeoPixel library.

For the software part: To be able to compile it besides uncommmenting Adafruit NeoPixel@1.2.5 and adding https://github.com/bigtreetech/Adafruit_NeoPixel I also had to remove Adafruit Neopixel from lib_ignore under the [env:STM32F103RC_bigtree] section otherwise Neopixel.h would be missing. I then enabled NEOPIXEL_LED in Configuration.h and set NEOPIXEL_PIN to PC7 as stated in the pinout.

Veema23 commented 4 years ago

im a bit confused with this neopixel stuff as well, I have everything set up in my configuration files and have compiled the .bin but the rag strip that I have has four wires coming from it and the skr mini e3 only has three pins.what will go where for this to work?

Veema23 commented 4 years ago

Ok never mind I see I was looking at the wrong pinout on the board...