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The RS-485 Linear Hall Sensor Interface Board is an Arduino-compatible module built around an ATmega328 microcontroller. It combines two Texas Instruments products: a SN65HVD08DR half-duplex RS-485 transceiver with a DRV5053 linear Hall-effect sensor on a single board. This creates a self-contained node that measures magnetic fields and reports data over an industrial RS-485 network.
The RS-485 Linear Hall Sensor Interface Board is an Arduino-compatible module built around an ATmega328 microcontroller. It combines two Texas Instruments products: a SN65HVD08DR half-duplex RS-485 transceiver with a DRV5053 linear Hall-effect sensor on a single board. This creates a self-contained node that measures magnetic fields and reports data over an industrial RS-485 network.
Header connectors break out multiple I/O lines, and the board includes a footprint for an optional 0.96-inch OLED display. This makes it useful as both a sensor node and a general-purpose RS-485 development platform. Figure 1 shows the assembled board.
A simple, practical application is an ON/OFF control system that operates over RS-485. Screw terminals handle the RS-485 A and B twisted-pair connections. All other signal lines break out onto 2.54 mm header connectors for easy interfacing with other boards, sensors, or an Arduino programmer.
The DRV5053 Hall sensor outputs an analog voltage proportional to magnetic field strength and polarity. The onboard ATmega328 reads this voltage on an analog input and transmits the value over the RS-485 bus, allowing the reading to be monitored or acted on remotely. In tests, the sensor produced ADC readings of roughly 6 for the south pole, 220 for centered (no field), and 440 for the north pole.
This is an easy-to-program magnetic rotary position sensor with high-resolution 12-bit analog or PWM output. This contactless system measures the absolute angle of a diametric magnetized on-axis magnet. The project is designed for contactless potentiometer applications and its robust design eliminates the influence of any homogenous external stray magnetic fields. The industry-standard I²C interface supports simple user programming of non-volatile parameters without requiring a dedicated programmer. By default, the output represents a range from 0 to 360 degrees. It is also possible to define a smaller range to the output by programming a zero angle (start position) and a maximum angle (stop position). The AS5600 is also equipped with a smart low-power mode feature to automatically reduce power consumption. An input pin (DIR) selects the polarity of the output with regard to rotation direction. If DIR is connected to the ground, the output value increases with clockwise rotation. If DIR is connected to VDD, the output value increases with counterclockwise rotation.
This is an easy-to-program magnetic rotary position sensor with high-resolution 12-bit analog or PWM output. This contactless system measures the absolute angle of a diametric magnetized on-axis magnet.
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