How could I connect a 4 pin clock to arduino?
I have the one attached in the photos:
I would like to display the temperature and humidity values measured by a dht22 sensor, like 22(temp value) : 54 (humidity value)
Is this possible?
Yes it is possible, maybe start here for example of how to connect the display and getting it showing some numbers.
I found the datasheet for you:
(Note: It's in Chinese)
It looks like the TM1617 chip on this board has been superseded by the TM1637 chip. Perhaps libraries for the newer chip will work on the old chip.
@iuliana_ast, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project 
See About the Installation & Troubleshooting category.
Hello
Take a view to get some ideas:
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