Category: IoT Kits

Zambretti Forecaster

The Zambretti Forecaster is a weather forecasting tool in the form of a circular slide rule introduced in 1920.  It claims to accurately predict near-term weather based on barometric pressure, the trend in the pressure (rising, steady, or falling), and wind direction. It relies on the fundamental meteorology of pressure fronts. Watch any TV weather forecast and …

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Sending APRS Analog Telemetry – The basics

The amateur radio Automatic Packet Reporting System (APRS) is typically used for position and weather reporting. It can also handle eight digital and five analog telemetry channels. The IoT KitsĀ© solar-powered weather stations have four APRS analog telemetry channels for LiPo cell voltage, time awake, WiFi signal strength, and light intensity. Four digital channels are used …

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DIY Instrument Shield

An instrument shelter provides a flow of air around weather sensors while protecting them from direct sunlight and rain. Without a shield, the sun can heat the temperature sensor giving a false high-temperature reading. Professional weather stations use a large louvered box called a Stevenson Screen that is built to specific dimensions for standardized weather …

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Solar Radiation Shield under test

The D1M-WX1 and D1S-WX1 solar-powered weather stations heat up in direct sunlight giving an incorrectly high-temperature reading. Early results from testing an Acurite solar radiation shield are very good. The shield is available from several online vendors. Check around for a good price as the same item sells for $10 to $60 from different vendors. …

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Di Mini (ESP8266) Wi-Fi Status Codes

The ESP8266 using the Arduino Core reports Wi-Fi status with the WiFi.status() function. The D1M-WX1 Weather Station attempts to connect to Wi-Fi every 250 milliseconds until the “Connect” status is found. If this does not happen after 15 attempts, it prints the status to the Serial Monitor. Normally, the LED on the ESP8266 flashes five or six …

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