I installed my Botanicalls in a plant today and hit the test button. To my surprise, it didn’t tweet. Checking the serial port, I discovered the following message:
tweet fail: code 500
The Twitter developer site describes an error code 500 as an internal server error. See the following site:
The problem appeared to be with the website (arduino-tweet.appspot.com) that is used by the Neocat Twitter library. The website was not responding. As of today, everything appears to be fine.