Build your own UK National Rail train departure board
If you're in the UK and always need to keep an eye on the next train time, you will appreciate this project by Bob Tidey.
They've used an inexpensive SPI-based LCD connected to an ESP8266 WiFi-enabled microcontroller to get the relevant data from the National Rail database and display it for convenience.
You need to enter the National Rail CRS code for your station of interest, and the CRS for the station you wish to pass through - then you have your own next train indicator:
Awesome. This is a great combination of organisations giving open access to useful data, and the ease of the Arduino/ESP8266 platform for making interesting devices.
For complete information on this project, head over to the Instructables page.
And if you're interested in doing this yourself, PMD Way can help you with the parts, such as