#define shelf_width 9
#define shelf_height 9
static unsigned char shelf_bits[] = {
   0xfe, 0x00, 0x82, 0x00, 0xba, 0x00, 0x82, 0x00, 0xfe, 0x00, 0x82, 0x00,
   0xba, 0x00, 0x82, 0x00, 0xfe, 0x00 };