Locate your java home directory by executing in Termal
This will return the full path to your java home directory on your Mac. Change into that directory and then you will be able to run the java keytool from there.
Here is a log of what I ran in Terminal on my Mac:
$ cd /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
When you have video or audio that is not playing back correctly, it can be helpful to check out chrome://media-internals/ which is documented at https://www.chromium.org/audio-video/media-internals
This can give you some information on the playback including errors that may have occurred.
https://github.com/esp8266/Arduino was the most helpful place to start. You need to
- open the Arduino IDE
- Open ‘Preferences’ menu under ‘File’
- Add the url http://arduino.esp8266.com/stable/package_esp8266com_index.json to the ‘Additional Boards Manager URLs’ input box
- click ‘OK’
- open menus ‘Tools’ -> ‘Board’ -> ‘Boards Manager’
- find the esp8266 by searching in search filter input
- Click the esp8266 and click install
You should then be able to connect to and upload sketches to the espduino board.
Sometimes you don’t have access to scripts you are trying to debug. Using the chrome extension flip the script makes it really easy to serve up local versions of files in place of the remote requests.