Connect the data pin of the DHT11 sensor to the digital PIN 3 of Arduino. Connect the GND and VCC of the OLED ... The libraries are Adafruit_GFX.h, Adafruit_SSD1306.h. Their installation procedure is ...

2.DHT.h && DHT_U.h It is used for establishing a connection with the DHT11 sensor through its serial communication protocol with ease. 3.Arduino_LED_Matrix.h Arduino UNO R4 built-in 8x12 LED matrix ...

These are Amazon affiliate links; a small part of your purchase goes to support me without any extra cost to you. Incoming information is a little noisy, but it's being managed by the delta < 1000 ...

Arduino Real Time Alarm Clock DS3231 with TM1638. Arduino Clock with Battery backup (real time clock), Time, Date, Alarm, Temperature, TM1638 seven segment module output and input, Display Sleep mode.