Test  Your Cube M4: Board 4

   <= Test  Your Cube M4: Board 3

Eagle CAD: System Bd. 4 Schematic A

Eagle CAD: System Bd. 4 Schematic B

 Final System Test

(Click for a short video)

Expansion Board

Board 4 was designed for expansion/development.

You can run jumpers from Board 1's female SIP connector to Board 4's female DIP connector.

There is also as JST I2C connector on Board 3 that could connect directly to either a breadboard or Board 4's dev area; lots of choices.

System Final Test

As a final test of your M4 Cube, run x_Weather_Inside_M4_h.ino.

If you're running an OLED using the SSD1306 driver chip, you're all set.

If you're running an OLED using the SH1106 driver, you'll need to comment out line 66 with "//" and remove the comment characters (//) from line 65.