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あとね、配線適当にSPIにしたけど、あれでアッてるのかしらない
https://learn.adafruit.com/nokia-5110-3310-monochrome-lcd/python-wiring
DCがGPIO9じゃなくてGPIO6になってて謎。
Adafruit Learning SystemNokia 5110/3310 Monochrome LCDThis is a quick tutorial for our 84x48 pixel monochrome LCD display. These displays are small, only about 1.5" diameter, but very readable due and comes with a backlight. This display is made of 84x48 individual pixels, so you can use it for graphics, text or bitmaps. These displays are inexpensive, easy to use, require only a few digital I/O pins and are fairly low power as well.