.. note:: Hello, welcome to the SunFounder Raspberry Pi & Arduino & ESP32 Enthusiasts Community on Facebook! Dive deeper into Raspberry Pi, Arduino, and ESP32 with fellow enthusiasts. **Why Join?** - **Expert Support**: Solve post-sale issues and technical challenges with help from our community and team. - **Learn & Share**: Exchange tips and tutorials to enhance your skills. - **Exclusive Previews**: Get early access to new product announcements and sneak peeks. - **Special Discounts**: Enjoy exclusive discounts on our newest products. - **Festive Promotions and Giveaways**: Take part in giveaways and holiday promotions. 👉 Ready to explore and create with us? Click [|link_sf_facebook|] and join today! Input ============= 2.1 Controllers -------------------- .. toctree:: :maxdepth: 1 2.1.1_button_c 2.1.2_micro_switch_c 2.1.3_touch_switch_module_c 2.1.4_slide_switch_c 2.1.5_tilt_switch_c 2.1.6_rotary_encoder_module_c 2.1.7_potentiometer_c 2.1.8_keypad_c 2.1.9_joystick_c 2.2 Sensors --------------- .. toctree:: :maxdepth: 1 2.2.1_photoresistor_c 2.2.2_thermistor_c 2.2.3_dht-11_c 2.2.4_reed_switch_c 2.2.5_ir_obstacle_avoidance_sensor_c 2.2.6_speed_sensor_module_c 2.2.7_pir_c 2.2.8_ultrasonic_sensor_module_c 2.2.9_mpu6050_module_c 2.2.10_mfrc522_rfid_module_c