a bunch learning stuff

When starting with arduino, you may find many things that are interesting to test. There are so many displays and also so many sensors. No way round, that you won't read a sensor and show the readings on any kind of display. My first display wasn't an OLED, it was a so called NOKIA display, which was used in the early mobile phone era. It was basically the screen on every NOKIA mobile and was LCD with no color and a resolution of 84x48 but readable. We also had so many pixel art from this era, that you can find everything (every icon you can think of) you need for your project. Than there is this sensor DHT-11 and DHT-22 which can give you temperature and humidity (the 22 is the better one); and there's this HC-SR06 ultra-sonic distance sensor, the gyro MPU-60x0, the air pressure BMP-085/BMA-18x, the compass HMC5883L, a GPS module of course...what ever can be measured, there's a sensor and a library . Most sensors use the i2c bus, where you have a clock (SCL) and a data (SDL) line and there's almost no limit in sensors and screens (yes, OLEDS and some others are i2c)

simple distance meter using HC-SR06+Nokia 5110+Arduino nano R3 https://github.com/km-coded/Distance_Sensor_Nokia

simple WIFI scanner using arduino nano R3+NRF24L01+ (2.4 GHz transceiver module) https://github.com/km-coded/wifi_scanner

a little badge as an info display with RGB light (R,G,B are controlled seperately)+arduino nano/mini+Nokia 5110 https://github.com/km-coded/rgb_lcd

fun project for simple 8-Bit music, this example comes with the TETRIS main theme https://github.com/km-coded/_8Bit_Tetris_Music

more enhanced thing to scan the i2c bus for sensors (as mentioned above) and screens https://github.com/km-coded/esp32_i2c_scanner

this temperature and humidity sensor/display is based on a little two digit BCD, an ATTINY2313 and the DHT-11 or DHT-22 - it shows both, a few seconds temperatur and than a few seconds humidity https://github.com/km-coded/tinyTempHumBCD