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-rw-r--r--teensy/README.md14
1 files changed, 14 insertions, 0 deletions
diff --git a/teensy/README.md b/teensy/README.md
index 14a5e4a713..3e4a75b9ed 100644
--- a/teensy/README.md
+++ b/teensy/README.md
@@ -56,3 +56,17 @@ include Makefile
GNUmakefile is not checked into the source code control system, so it will
retain your settings when updating your source tree. You can also add
additional Makefile customizations this way.
+
+### Tips for OSX
+
+Set the ARDUINO environment variable to the location where Arduino with TeensyDuino is installed.
+```bash
+export ARDUINO=~/Downloads/Arduino.app/Contents/Java/
+```
+
+Search /dev/ for USB port name, which will be cu.usbmodem followed by a few numbers. The name of the port maybe different depending on the version of OSX.
+To access the Python prompt type:
+
+```bash
+screen <devicename> 115200
+```