Some people reported problems with their oled display. First try to use the chat so we can have a look.
If you are sure it is broken, you can finish Practical Assignment 1 with this alternative setup:
The sketch given below is a replacement for the sketch in step 2 of the assignment, which uses the Serial Monitor for output. You start the Serial Monitor (after a successful upload) via Tools > Serial Monitor, or the icon in the top right corner.
Download it here: https://home.et.utwente.nl/slootenvanf/div/arduino/ultrasonic_sensor_serial_monitor.ino
And for step 3 of the assignment, use this: https://home.et.utwente.nl/slootenvanf/div/arduino/ultrasonic_sensor_warning_no_display.ino
If you need a replacement display (because it is sure it is broken), there are 2 possibilities:
If you live in Enschede or can come to Enschede, you can pick up a replacement at Fjodor's home (send him an email to make an appointment)
You order a replacement yourself (and pay for it).
