#define signal_width 16
#define signal_height 16
#define signal_x_hot 0
#define signal_y_hot 7
static unsigned char signal_bits[] = {
   0x20, 0x00, 0x70, 0x00, 0x70, 0x00, 0xf0, 0x00, 0xd8, 0x00, 0xd8, 0x00,
   0x98, 0xf1, 0x8e, 0x71, 0x8f, 0x19, 0x00, 0x1b, 0x00, 0x1b, 0x00, 0x0e,
   0x00, 0x0e, 0x00, 0x0c, 0x00, 0x04, 0x00, 0x00};
