FadeCandy alternative?

[Pucksnok]

Hi. I'm in a huge need for more LED's. Is there any alternative to FadeCandy? Seems it's not available to buy since a year back or something.
Preferably something that doesn't cost me a lot...

https://docs.missionpinball.org/en/stable/hardware/fadecandy/index.html

[cobra18t]

What about an OPP STM32 board? It costs less than a Fadecandy and supports 256 LEDs in a single chain. Not the same as the 64x8 LEDs that the Fadecandy does, but similar. It is a 3.3V device, but as long as you place it close to the first LED, you should be fine. I add a 3.3V->5V level converter to my boards because I want to remove that variable for my customers. You just use B15 as the data line as shown here: https://pinballmakers.com/wiki/index.php?title=OPP#STM32F103
SPI LEDs are also possible, but I forget the CLK pin # at the moment.

[Pucksnok]

Thanks, will do a order as soon the SEK currency is a bit stronger, been waiting for a while so can continue waiting a bit longer. Will order a satellite pcb and some extra processor-cards if something goes wrong with the ones I have.

I now have two STM32 running and as standard it sets it as switch wings, do I have to use any other config to use neoled?
Not really understanding how the "config".py-files are built, I had no problem to set a serial and erase/write but seems I need to learn how the files must be built. Read the docs in the opp source but doesn't seem to cover it.

[Pucksnok]

I guess something like this is correct. Copy paste from different configuration-files.
Wing 0 Neo, rest input

testVers = '00.00.02'


import rs232Intf


# Config inputs as all state inputs

wingCfg = [ [ rs232Intf.WING_NEO, rs232Intf.WING_INP, rs232Intf.WING_INP, rs232Intf.WING_INP ] ]


# Config inputs as all state inputs

inpCfg = [ [ rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, \

             rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, \

             rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, \

             rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, \

             rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, \

             rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, \

             rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, \

             rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE, rs232Intf.CFG_INP_STATE ] ]



# Config color table

# bytesPerPxl (1 byte), numPixels (1 byte, if 0, then 256 pixels), unused (95 bytes) 

colorCfg = [ [ '\x03', '\x08', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', '\xff', \

               '\xff', \es

[Pucksnok]

And while I ask stuff. To update my cobra pin processors is it just to flash a new opp firmware to get them updated? Serial is kept as long I don't erase the stm32, is the config saved as well or do I have to reload them?

[cobra18t]

Here is my OPP config: https://github.com/cobra18t/CobraPin/blob/main/OPP%20Config/CobraPin_Board252_FC_inputs.py

It enables 256 LEDs (yours only enables 8) and defaults them to a dim blue glow for troubleshooting purposes (yours defaults to a red, green, blue, white pattern that is quite bright and power hungry for a test mode)

I always flash new firmware, then reload the serial number and the OPP config just to be sure.

[Pucksnok]

I know I didn't know what I did with the config. Thanks for sharing!!
Will update my Cobrapin boards tonight with new opp firmware, should be easy enough. Again, thank you!

[Pucksnok]

I can now after all the help in here say that STM32F103C8T6 works perfectly for neopixels with everything I thrown at it. I now have two STM32 I tried and after setting a serial ("-ser=xxx") they work perfectly together.
Thanks for all the help.