For this arduino project I used a DHT-11 Sensor and an OLED display 128x64 pixel i2c
The repository contains three .ino files for three versions of the project
It prints on display the humidity percentage and cartesian graph
It prints on the display the humidity percentage and cartesian graph and also a bar graph, and maximum and minimum value recorded
It's similar to the other version but the graph it is a candlestick graph, so the graph appears continuous