CWX

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CWX is a STEM based Compact IoT Weather Station. Powered by a single CR123 Lithium battery, or external DC power, this NEW CWX-3-BME280 Board is a Compact Weather Station for IoT H ome Automation, providing: Barometric Pressure Ambient Temperature Humidity Ambient Light Level The New CWX V3 features the following Top Level Improvements: New ESP32-C3 MCU (replacing the ESP8266/ESP12S) Type C USB Interface Improved LDO Current assisting any External Devices On-Board ESP32-C3 D1 UART Interface On-Board EEPROM for Data Logging and Configuration User Button RGB LED Dallas OneWire Interface (for external temperature sensors and probes) I2C External Interface Improved Ambient Light Sensor On-Board 32.768 kHz XTAL for Real Time Clock CWX3 Features Based on the new Espressif ESP32C3 Mini, which has both Wi-Fi and BT, the CWX3 SDK board is provided with onboard Battery Holder or External DC Input. Interface for programming, and development, is thought a standard Type C USB, into the onboard UART and ESP32C3, so making development and use, completely self-contained. Using the provided I2C interface, an OLED display can be plugged directly into the board, if required, for local monitoring and status information. Opensource CWX Firmware is provided on our GitHub, using the standard Platform IO platform. This monitors Barometric Pressure, Temperature, Humidity, Light Level and CO2 Air Quality information, which can then be sent to your Home Automation, or cloud service, via provided MQTT or Domoticz etc., as standard. CWX Specification and Features Sensors Included High Accuracy Barometric Sensor - Bosch BME 280 Module, providing: - Barometric Pressure 300...1100 hPa (millibar) - Accuracy ±0.25% - which is equivalent to 1m at 400m height change - RMS Noise 0.2 Pa - which is equivalent to 1.7 cm - Temperature -40 to 85°C - Temperature coefficient offset ±1.5Pa/K. - which is equivalent to ±12.6cm at 1 °C temperature change - Humidity - 0 to 100 % - Accuracy tolerance ±3% relative humidity - Hysteresis ≤2% relative humidity Ambient Light Sensor SFH2440, providing spectral sensitivity adapted to human eye sensitivity Std. Light A; T = 2856 K Minimum 7 nA/lx Spectral range of sensitivity λ10% typically 400 to 690 nm Wavelength of max sensitivity λS max typically 620 nm MCU Espressif ESP32-C3 Mini - 2.4GHz Wi-Fi (802.11b/g/n) and Bluetooth 5 ESP32-C3-MINI-1-N4 (PCB Antenna) ESP32-C3-MINI-1U-N4 (External Antenna via U. FL cable) On-Board 32.768 kHz XTAL for Real Time Clock Type C Programming / Debug Type C USB Connector CH340K USB UART 2Mbps Transceiver Easy programming. Select ‘ESP32C3 Dev Module’ BAUD rate up to 921600 to speed up Flashing Serial Monitoring Debug and Remote Logging Power Can Be Taken from USB 5V (when Flashing). EEPROM (I2C) AT24C64 64Kbit On-board Data Logging On-board Parameters Firmware setup user parameters and configuration Battery or External DC Operation Powered by: 1 x CR123 Lithium battery External DC such as USB 5V or 4.5 to 15V DC Battery Voltage Monitor ADC provides battery voltage reading External DC Input AMS1117 LDO allowing use of external DC input 4.5V to 15V External Temperature Dallas OneWire Interface for External Temperatures Example Probe Sensor for Greenhouse RGB LED - Status Configured to three GPIO’s for easy Firmware control I2C OLED Connector Configurable 3V3 Pin 1 and 2 polarities PCB 4 Pin Header Connector Buttons Reset User (Program or GP9 Detect) Enclosure Designed to fit into a Waterproof Clear Cover Enclosure Compact Design and Easy to Use Compact PCB 63mm x 51mm 4 x M3 mounting holes Operating Ambient Temperature -10 to +60 °C Optional Conformal Coating – on request. Tags: BME280, ESP32C3, SFH2440, Home Automation, Humidity, IoT, Light, Pressure, Remote Monitoring, SDK, STEM, Temperature, Domoticz, Home Assistant, ThingSpeak, Weather Station, Weather System Further information maybe found on the GitHub pages https://github.com/DitroniX/CWX-Compact-Weather-Station and also https://www.hackster.io/DitroniX/cwx-esp32-c3-portable-compact-weather-station-b04172 Options Clear Top Waterproof Enclosure Show more