Imports periph.io/x/conn/v3/display periph.io/x/conn/v3/physic periph.io/x/conn/v3/spi periph.io/x/conn/v3/spi/spireg periph.io/x/devices/v3/apa102 periph.io/x/host/v3 Standard library imports errors flag fmt image image/gif image/jpeg image/png io/ioutil log os path/filepath strconv strings time