diff --git a/Tutorial.pdf b/4WD_Smart_Car_Board_for_Raspberry_Pi.pdf similarity index 85% rename from Tutorial.pdf rename to 4WD_Smart_Car_Board_for_Raspberry_Pi.pdf index ff58a43..83a005a 100644 Binary files a/Tutorial.pdf and b/4WD_Smart_Car_Board_for_Raspberry_Pi.pdf differ diff --git a/About_Battery.pdf b/About_Battery.pdf new file mode 100644 index 0000000..8cb88bc Binary files /dev/null and b/About_Battery.pdf differ