At the beginning of the epidemic, I bought a Raspberry Pi and played with it for a while. Later, I didn’t find any interesting ways to play it. I just left it aside to gather dust after work. I have been a bit free recently, so I sorted out the LED dot matrix clocks I had played with before. I put it on the desktop and used it. The clock was automatically corrected online, including the date, day of the week, current temperature, sunny and rainy days, and I played a lot of python programming.
The LED dot matrix is driven by MAX7219, Φ3.0 8x8 red dot matrix. At that time, I bought a few modules and connected a few wires for experiments. Now I bought the PCB and frame for nothing, and installed them. It looks comfortable. Say goodbye to eating. Let's use some of the remaining heat.
The connection between the back and the Raspberry Pi adopts a single row of curved pins and a double row of straight plug female structures, which are directly plugged into the double row of pins of the Raspberry Pi.
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