A number of changes to try to get to the point where I could use Wokwi for some basic testing of animations

platformio.ini

@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = teensy36
+default_envs = uno
 
 [common]
 
@@ -22,3 +22,14 @@ lib_deps =
 	pixelmatix/SmartMatrix@^4.0.3
 	pfeerick/elapsedMillis@^1.0.6
 	adafruit/Adafruit GFX Library@^1.11.9
+	arduino-libraries/SD@^1.3.0
+
+[env:uno]
+platform = atmelavr
+board = uno
+framework = arduino
+lib_deps = 
+	fastled/FastLED@^3.7.0
+	pfeerick/elapsedMillis@^1.0.6
+	adafruit/Adafruit GFX Library@^1.11.9
+	arduino-libraries/SD@^1.3.0