TrolaESP32

Home bus arrivals on 4*8x8 LED MATRIX display.

ESP32 for Arduino IDE (C++) to get started

Arduino core for the ESP32
ESP32 other help
video that helped me to get going

Arduino Libraries used

MD_MAX72XX for LED_MATRIX
NTPClient to get the time
ArduinoJson to get data from http GET request

API used to get trola arrivals

trola.si documentation

Hardware used

MAX7219 4*8x8 LED Matrix FC-16 Hardware library documentation
EPS32 board

Connections

ESP32	MAX7219 8x8 LED Matrix
VIN	VCC
GND	GND
GPIO12	DIN
GPIO15	CS
GPIO14	CLK

Adapt for your station

client.println("GET https://www.trola.si/[yourStationNumber]/[yourBusNumberOptional]/ HTTP/1.0");

Use trola.si or use documentation to figure your station number and your http request. Try it out in postman also add params so you get json formatted response.

key	Value
Accept	application/json

Paste json result in ArduinoJson Assistant and you will get all the data you need to customize the code for your needs. Then you can use this simple example to understand how it works.

Problems with connecting to the ESP32 in Windows 10

In my case the device was connected. I had the latest windows 10 drivers for the esp32 but I could not upload to the esp32. So I downgraded the driver for windows 7/8/8.1 it has the (default) tag, and that fixed the problem for me.

fulviomanente/TrolaESP32