C Language Tutorial ========================== .. toctree:: :maxdepth: 1 C_preparation 0_led 1_led 2_btn&led 3_led_bar 4_analog&pwm 5_rgb_led 6_buzzer 7_serial_communication 8_ad_converter 9_touch_sensor 10_potentiometer 11_photoresistor 12_thermistor 13_joystick 14_74HC595&led_bar_graph 15_74HC595&7-segment_display 16_relay&motor 17_servo 18_lcd1602 19_ultrasonic_ranging 20_bluetooth 21_read_and_write_the_sdcard 22_play_sd_card_music 23_wifi_working_modes 24_tcpip 25_camera_web_server 26_camera_tcp_server