#define fan_width 18
#define fan_height 18
static char fan_bits[] = {
  0x3C, 0xC0, 0x00, 0x3C, 0xC0, 0x00, 0xC3, 0x0F, 0x03, 0xC3, 0x0F, 0x03, 
  0xF0, 0x3F, 0x03, 0xF0, 0x3F, 0x03, 0x3C, 0xF0, 0x00, 0x3C, 0xF0, 0x00, 
  0x3C, 0xF0, 0x00, 0x3C, 0xF0, 0x00, 0x3C, 0xF0, 0x00, 0x3C, 0xF0, 0x00, 
  0xF3, 0x3F, 0x00, 0xF3, 0x3F, 0x00, 0xC3, 0x0F, 0x03, 0xC3, 0x0F, 0x03, 
  0x0C, 0xF0, 0x00, 0x0C, 0xF0, 0x00, };