Imports periph.io/x/periph/conn/i2c/i2creg periph.io/x/periph/conn/gpio/gpioreg periph.io/x/periph/devices/lepton periph.io/x/periph/conn/spi/spireg periph.io/x/periph/host periph.io/x/periph periph.io/x/periph/conn/gpio Standard library imports image/png image image/color errors flag fmt io/ioutil log os