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Check temperature and humidity in an OLED screen any time you want and at the same time collect that data in an IoT platform.
Last week I published a project called Simplest IoT temperature and humidity meter. That is a good project because you can collect and graph temperature and humidity in an IoT platform like Adafruit IO. But what about if I want to know the temperature right now? Well, I had to enter Adafruit IO and see it. Then I thought If I could put a screen and see the temperature without entering Adafruit.
Well, I added an OLED 0.91 inch OLED screen to the previous project and I can see the temperature and humidity in the device screen.

LD1117V33 voltage regulator.
Breakout Board ESP-01S Breadboard Adapter PCB Board.
DHT11 temperature and humidity sensor.
100 nF Capacitor.
Condensador electroltico 10uF x 50 V.
5.6K ohms resistor.
AC 100-240V to DC 5V 2A Power Supply Adapter.
Female DC Power Jack.
Preformed Breadboard Jumper Wire.
Solderless Breadboards.
0.91 Inch I2C SSD1306 OLED Display Module Blue.”

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