Nebojsa Matic, CEO of MIKROE, comments: "This Click™ board is the perfect solution for developing contactless fluid detection applications for IV fluids, oils and other petroleum products, colored fluids, toner fluids, water, etc. The Water Detect 2 Click has multiple output states and can recognize the presence of fluid, the absence of fluid, and the absence of tubing."
The OPB350L250 tube liquid sensor consists of an LED and a phototransistor. The phototransistor reads the light from an LED passing through a transparent tube. This system can distinguish between clear and dark liquid, the absence of liquid, the presence of bubbles in the liquid, and even the absence of a tube. The user must identify the typical current values for each situation, and the relationship between the different states allows for the recognition of the various conditions. The sensor itself is housed in an opaque plastic casing that improves ambient light rejection. The casing fits snugly around the tube, providing a secure and watertight connection. The sensor accepts tubes with a diameter of 6.3 mm, regardless of the liquid flow direction.
Water Detect 2 Click utilizes the Microchip MCP6022 rail-to-rail input/output operational amplifier to amplify the liquid sensor's output. For a visual representation of the liquid sensor's status, this Click board™ features an RGB LED that uses three colors to indicate water detection, no water detection, and the LED being ON. The built-in VREF potentiometer is used for liquid sensor calibration. This allows you to set the threshold for what you want to detect.
The Water Detect 2 Click is compatible with a mikroSDK-compatible library, which includes features that simplify software development.
Click boards follow mikroBUS™, a modular standard for add-on prototyping boards invented by MIKROE, which allows design engineers to easily change peripherals, cutting months of development time. Any Click board can be connected to the microcontroller or microprocessor of a main board. Many leading microcontroller companies, such as Microchip, NXP, Infineon, Dialog, STM, Analog Devices, Renesas, and Toshiba, now include the mikroBUS socket on their development boards.
