Imports periph.io/x/periph/conn periph.io/x/periph/conn/gpio periph.io/x/periph/conn/i2c periph.io/x/periph/conn/spi periph.io/x/periph/devices periph.io/x/periph/devices/ssd1306/image1bit Standard library imports bytes errors fmt image image/color image/draw