Enviro Weather - module with sensors for the weather station with Raspberry Pi Pico W

Description

A set for building a weather station equipped with a controller based on Raspberry Pi Pico W. It consists of a module with a pressure, humidity, temperature and light sensor and an external rainfall sensor with a wind speed and direction meter. The set is controlled by the RP2040 microcontroller board equipped with two ARM Cortex-M0 + cores operating at 133 MHz, 264 KB RAM and 2 MB of external QSPI flash memory. In addition, the board is equipped with the Infineon CYW43439 system, extending the board with wireless connectivity.

The module is based on the BME280 sensor, which allows you to read the atmospheric pressure in the range from 300 to 1100 hPa with an accuracy of ±1 hPa, temperature in the range from -40 to 85 ℃ with an accuracy of ± 1°C and humidity with an accuracy of ± 3%. On the board, the user will also find the LTR-559 light sensor, which allows you to read the illumination intensity from 0.01 to 64,000 lux and detect objects in a short distance (up to 5 cm). In addition, the HAT allows the connection of rain and wind sensors thanks to the added RJ11 connectors and other sensors via the Qwiic/Stemma QT connector.

The weather sensor kit includes wind direction and speed sensors and a rain sensor. They do not contain active electronics and instead use magnetic reed switches and magnets. They require a power connection to function properly. Cables terminated with an RJ11 connector are led out of the measuring modules. The rain sensor is a self-emptying bucket type rain gauge that activates the momentary closure of the circuit when rainfall is detected at 0.2794 mm. The anemometer (wind speed meter) codes the wind speed by generating pulses with each revolution (speed 2.4 km / h generates a pulse once per second). The wind direction is transmitted as the voltage produced by the combination of resistors inside the sensor. The paddle magnet has the potential to close two switches simultaneously, allowing 16 positions to be read.

The device is designed to work well on battery power. The Enviro board has a built-in RTC (real time clock) so you can periodically wake the microcontroller from sleep mode, read (and optionally connect to Wi-Fi), and then sleep again, giving you months of unlimited battery life. The set is dedicated to projects of weather stations. Examples of use along with the instruction manual are available on the project website.

Features

• Raspberry Pi Pico W
• Dual Arm Cortex M0+ operating at up to 133 MHz with 264 KB of SRAM
• 2MB QSPI flash memory supporting XiP
• Powered and programmable via USB micro-B
• 2.4 GHz wireless communication
• BME280 sensor:
• Pressure measurement: from 300 to 1100 hPa
• Temperature measurement: -40 to 85 ℃
• Humidity measuring range: 0 to 100% RH
• I2C interface
• LTR-559 sensor
• Measurement of illuminance from 0.01 to 64,000 lux
• Proximity sensor up to 5 cm
• UV/IR filter
• I2C interface
• Sleep/wake function with RTC
• 1 x POKE button
• Reset button
• JST-PH battery connector
• User LED
• Warning LED for real time clock
• Qwiic / Stemma QT connector
• 2 x RJ11 connectors
• Rainfall measurement at the level of 0.2794 mm
• Direction sensor (reading 16 positions) and wind speed (speed 2.4 km/h generates a pulse once a second)

Kit contains

• Enviro Weather module with Raspberry Pi Pico W
• Wind and rain sensor
• Protective housing
• 2 x AAA battery
• 2 x AA battery
• Micro USB cable
• Velcro for attaching the battery