ICStation team has made this project about the liquid drop speed measurement system.It uses DC 5V to work. When there is no liquid in the infrared area, the buzzer will alarm and when there is liquid in the infrared area, the buzzer will not alarm. The LCD 1602 can display the drops of liquid every 10 second. You can set the drops of liquid every 10 second for reference.It is a low-cost and simple liquid drop speed measurement system. It is suitable for the areas such as works, hospital.
1)After the initialization of hardware, the LCD1602 will display the pre-set interface.
2)When there is no liquid in the infrared area, the buzzer will alarm and the LCD1602 will display the N on the YN column.
4)You can set the drops of liquid every 10 second by tow buttons.
Code for reference:
Step 1: Components List
9.+5V DC power supply
Step 2: The Schematic Diagram
Step 3: Lead to the Power Supply Line and GND
Step 4: The Connection of LCD1602
Step 5: The Connection of Buzzer Module
Step 6: The Connection of Infrared Receiving Tube
2.Connect the pin 1 of infrared receiving tube to the 220K current-limiting resistance, and then connect to the A3 pin of ICStation UNO R3.Connect the pin2 of the infrared receiving tube to cathode, and pin3 of the infrared receiving tube to the A2 pin of ICStation UNO R3.