Program standalone Atmega328 PU using Arduino Uno R4 Minima

Other Hardware 3rd Party Boards
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Hi to everyone,
I'm a beginner with Arduino and electronics in general. I'm trying to program a standalone Atmega328 PU microcontroller, with the purpose of building a simple thermometer by connecting it to an LCD display and a thermistor.
I can't figure out how can I upload the code into the atmega chip using Arduino Uno R4 Minima. Every guide I've found on web are referred to older version of Arduino, where you where able to detach the microcontroller from the board and by uploading as ISP into the atmega chip.
Is there a way to do what I need without buying another board?

Thank you all.

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Do you need something like this:

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Did you try running the Arduino ISP sketch on your Minima? What happened?

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