9292 dutch public transport monitor

I made a simple library that fetches information about the Dutch public transport. This project shows how you can use the library

I wanted to be able to show public transport information on my microcontroller of choice. The code I wrote is written for the ESP32 but also works on the ESP8266. It simply makes an HTTP-request at the 9292 API. The server then returns a JSON string with the information you requested. Then this information can be parsed so that you are left with the information you want, for instance the departure time of a specific train, or the destination of a bus of choice.
The information then can be displayed on a display of your choice.

Project Elements

Journey on big OLED (JPG, 150.17 KB)

Departure times for a journey to the stations mentioned above

Departure times on OLED (JPG, 126.86 KB)

Departure times of the first 3 trains departing from station Utrecht Centraal

enclosure (JPG, 120.41 KB)

enclosure (JPG, 113.95 KB)

display (JPG, 86.82 KB)

enclosure (JPG, 78.06 KB)

Schematics (PNG, 21.76 KB)

Schematics of the project

Project code (ZIP)

The arduino library + example code for the ESP32

Enclosure (ZIP)

STL-files of the enclosure

Updates from the author

Discussion (1 comment)

Build This Project

Bring this design to life with the Elektor PCB Service, powered by Eurocircuits. Upload the project files and order professionally manufactured PCBs or assembled boards through a proven European production platform.

Supporting KiCad, Eagle, Gerber, and ODB++ formats, the service is suitable for everything from prototypes and validation builds to series production and volume manufacturing.

Made in Europe. Fast. Reliable. Professional.

Fabricate This PCB