This listing is for the complete WR-01 set, including the interface unit, anemometer, wind vane, rain gauge, mast, and mounting hardware. The WR-01 and sensor set are also available separately.
Description
The WR-01 pairs economical, reliable, field-proven wind and rain sensors with a simple yet powerful interface. The interface board comes in a rugged, weatherproof enclosure and provides two serial interfaces, a flexible alarm output, and a 0-3.3v analog output. It allows simple interfacing of weather sensors for PLCs, PCs, single-board computers including Raspberry Pi, and embedded devices including Arduino.
Port 1 - RS-485
Serial port 1 provides a 2-wire RS-485 interface, suitable for long cable runs in electrically noisy environments.
Port 2 - TTL/RS-232
Serial port 2 provides a bidirectional 3.3v TTL serial interface for easy interfacing with embedded devices over short cable runs, plus a secondary output that mirrors the TTL TX signal with inverted polarity and a wider voltage swing, making it compatible with RS-232 ports and allowing longer cable runs.
Output Formats
Both ports support Modbus RTU for configuration and access to sensor readings. Sensor readings are provided in multiple units (mm and inches for rain and m/s, MPH, KPH, and knots for wind speed) to simplify integration. Both ports can also be configured to output plain text data at specified intervals in a simple CSV format, in JSON, or in Peet Bros Ultimeter 2000 format. This allows easy parsing on virtually any device without special drivers or libraries - reading and parsing data can be done with a single line of Python code.
Alarm Output
The WR-01's open drain alarm output can be configured to activate when a specified set of conditions are met, without requiring any external controller. This can be used, for example, to disable an irrigation system when rainfall is detected. Multiple parameters can be evaluated using AND and OR operators.
Analog Output
A single 0 to 3.3v analog output can be configured to reflect any measured parameter across any range of values.
Example Code
Examples can be found in the Github repository.
User's Manual
WR-01 User's Manual (PDF)
