Effect Sensor | WCS1800 Current Detector Module | 35A DC Protection

This Hall effect sensor module measures high DC currents. It also offers adjustable over-current protection. It uses a WCS-series Hall effect sensor. This sensor gives a voltage output that matches the current. It also has a digital alert when current goes past a set limit. Features and Benefits - Integrated over-current detection - An onboard comparator triggers a digital output. This happens when current goes over an adjustable limit. It protects your circuit. - Three current range models - Pick the WCS1800 for up to 35A. Choose the WCS1700 for up to 70A. Or get the WCS1600 for up to 100A. - Dual analog and digital outputs - Use the analog output for exact current measurements. Use the digital output for quick protection switching. - Hall effect sensing principle - This provides galvanic isolation. It safely separates your high-current power path from your sensitive microcontroller. Applications - Monitor current in a solar panel or battery charging system. - Add short-circuit and over-current protection to a DIY bench power supply. - Measure the current draw of large DC motors in robotics projects. 🛠️ Tools Required To effectively test your Hall Effect Sensor, you will need a few essential tools. A reliable multimeter capable of measuring voltage and continuity is paramount. For power, a stable 3-5V DC power supply is necessary, aligning with the sensor's supply voltage. Alligator clips or jumper wires are highly recommended for secure connections, particularly when setting up the test circuit on a breadboard or similar prototyping environment. A breadboard itself can be very useful for temporary circuit assembly. 📌 Pinout Identification Accurate pinout identification is critical before connecting your Hall Effect Sensor. While specific pin labels can vary, Hall Effect sensors typically feature three main pins: VCC (for the 3-5V DC supply voltage), GND (ground), and an Output pin. The Output pin will carry the signal indicating current detection. Always refer to any markings on the module itself or accompanying documentation for precise pin assignments. Incorrect wiring can damage the sensor or provide inaccurate readings. 🧪 Method 1: Testing On-Bench (Removed from Circuit) Testing your Hall Effect sensor on a workbench, disconnected from its operational circuit, allows for isolated diagnostics. This method helps confirm the sensor's basic functionality without interference from other system components. For the WCS1800, which has a 35A current range, you will need a controlled current source for a comprehensive test. For simpler checks, a magnet can be used to observe changes in the output if it is a basic magnetic field sensor, though this module detects current. Setup To set up for testing, connect the sensor’s VCC pin to the positive terminal of your 3-5V DC power supply. Connect the GND pin to the negative terminal. For the WCS1800 Current Detector Module, you will then need to pass a known current through the module's current path. Connect your multimeter in voltage mode across the Output pin and GND to monitor the sensor's response. Ensure all connections are secure to prevent intermittent readings. Testing Digital Sensors (Switch / Latch Type) For digital Hall Effect sensors, often functioning as switch or latch types, testing involves observing a clear change in the output voltage. With the sensor powered by 3-5V DC, apply a current through the module. For the WCS1800, which is an adjustable short over-current detector, the output will likely switch states (e.g., from high to low or vice versa) when the current exceeds the set threshold. Use your multimeter to back-probe the output pin and verify this state change.