Sleep Mode for the Wemos D1 Mini

The key to using solar power in an Internet of Things project is to put the microcontroller unit into sleep modeafter the sensors are read and the data posted to your IoT server. The NodeMCU and the Wemos D1 WiFi, a larger profile that mimics the Arduino UNO form, reliably woke from deep sleep. So …

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External sensors for weather station

Recently the local Institute of Electrical and Electronic Engineers (IEEE) held two “hands-on” sessions to build an Internet of Things (IoT) weather station. We built it on a breadboard so that the attendees would not have to solder wires. Several of the participants have kept their stations on-line and two have placed the unit outdoors. …

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Solar Power Supply

A solar power supply would be a really neat addition to any Internet of Things project. The ultimate goal would be to have a self-sufficient IoT device that could be remotely reprogrammed¬†with the Over The Air (OTA) feature. A key to using solar power is to reduce the average power requirement of the IoT device. …

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