(r2) CharlieWing < MecrispCube

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---+ Feather Charlie Wing

Adafruit 15x7 [[https://learn.adafruit.com/adafruit-15x7-7x15-charlieplex-led-matrix-charliewing-featherwing][CharliePlex]] LED Matrix Display.

!IS31FL3731 https://www.issi.com/WW/pdf/31FL3731.pdf

I2C Address 0x74

<pre>
\ buffer for I2C
20 buffer: i2c-buf

\ set I2C address
$74 I2dev

\ select frame 1
$000000FD i2c-buf !
i2c-buf 2 I2Cput

\ switch on first 8 LEDs (first column?)
$0000FF00 i2c-buf !
i2c-buf 2 I2Cput

\ pwm first LED
$00007F24 i2c-buf !
i2c-buf 2 I2Cput

\ pwm second LED
$00007F25 i2c-buf !
i2c-buf 2 I2Cput
</pre>


<img src="%ATTACHURLPATH%/feather_3138_iso_demo.jpg" alt="feather_3138_iso_demo.jpg" width="1024" height="787" />

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
jpg	feather_3138_iso_demo.jpg	r1	manage	758.0 K	2021-04-23 - 20:09	PeterSchmid

Topic revision: r2 - 2021-04-24 - PeterSchmid