     // prepare ping message
     fill_buffer(node, 0x01, 0, NULL);
 
-    Serial.print(argv[0]);
-    Serial.print(" 00 ");
-    Serial.println(node, HEX);
+    print("%s 00 %02X\n", argv[0], node);
     return 0;
 }
 

        // recalculate time offset
        time_offset = time - millis();
    }
    Serial.print(argv[0]);
    Serial.print(" 00 ");
    Serial.println(time);
}

static const cmd_t commands[] = {

            memcpy(&buf->data, rcv, len);
            buf->len = len;

            print("!r %02X\n", node);
            break;
        }
    }
