Syncronizing a pair of eyes on Hallowing boards?

[lemgandi]

Alas, I saw your Monster Mask board just a little too late. I am the proud owner of a Hallowing M0 Express ( SKU 3900). I'd like to get another one and sync the eye demos between the two to make a pair of eyes, as in the Monster Mask board. I'm thinking I could use the I2C ports on the Hallowings to keep them in sync with just a 4-wire cable. From my reading of the doc, the Monster Mask and the Hallowing demo share a code base ( https://github.com/adafruit/Adafruit_Le ... er/M4_Eyes ). Looks like all I'd really have to do is hack some stuff into the top of the Loop part of the sketch to send/receive my sync data over I2C. Is that feasible?

[fishycircuits]

https://learn.adafruit.com/synchronized ... hallowings may be what you're looking for.

[travid]

Is there a way to do the synchronizing with the Hallowing M4 like the M4SKEYES? Or have the M0 synchronize human-looking eyes?

[adafruit_support_mike]

The M0 HalloWing can display any kind of eyes you want. The tutorial linked above shows how to change the artwork.

The synchronization trick in the tutorial should also work with the M4 HalloWing.

[travid]

Thanks, Mike
I'm not great at Arduino, but I have it compiled and running on the Hallowing M0. Though when I change the code I either get a white screen or the eyes don't sync.
I think this is where I need to make my changes, but still not sure what to do...

Code: Select all

eyeInfo_t eyeInfo[] = {
#if defined(ADAFRUIT_HALLOWING)
  { 39, -1, 2 }, // SINGLE EYE display-select and wink pins, rotate 180
#elif defined(ARDUINO_SAMD_CIRCUITPLAYGROUND_EXPRESS) || defined(ARDUINO_NRF52840_CIRCUITPLAY)
  { A6, -1, 2 }, // SINGLE EYE display-select and wink pins, rotate 180
#elif defined(ADAFRUIT_TRINKET_M0)
  {  0, -1, 0 }, // SINGLE EYE display-select, no wink, no rotation
#else
  {  9, 0, 0 }, // LEFT EYE display-select and wink pins, no rotation
  { 10, 2, 0 }, // RIGHT EYE display-select and wink pins, no rotation
#endif