adafruit industries

Started work with 2.9" e-ink Featherwing, it works very unstable.

Does it suppose to work with arduino at all? if not what kind of controller board you will suggest?

Testing with Adafruit 4.4.4 adafruit EPD library,
Arduino IDE 1.8.19

Controller board:Arduino mega 2560, Uno and Nano. results are almost the same:
EPD board: Greyscale 2.9 E-ink Featherwing

Power 3.3V from arduino

Example "Thinkink_gray4"
// 2.9" Grayscale Featherwing or Breakout:
ThinkInk_290_Grayscale4_T5 display(EPD_DC, EPD_RESET, EPD_CS, SRAM_CS, EPD_BUSY);

Results
With BUSY signal - no activity on the screen at all.

With busy signal port set to -1 :unstable image , blinking, some times shows text but it is and not readable.
Loos like some sync issues, but what issues may be with 5" of direct wires?

Please help to figure out why it does not work.
images are here
https://photos.app.goo.gl/kiHoaMo3mu7TU3Uk9

Any chance get some Adafruit support? it is frustrating...

FeatherWings are designed to be used with Feather main boards. Use with other form factors is untested generally not supported. But you can attempt this if you want, since it is potentially possible. You'll need to consult the pinout information, and possibly the schematic, for the specific FeatherWing and make sure all required pins are connected.