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June 2, 2019

Integrating RF smoke sensors into Smart Home

Reflecting from the fire in the Office of Ministry of Transportation This is an industrial-grade smoke detector that sounds very noisy and transmits an…

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June 2, 2019

Android sensors to Smart Home

Our Android phone is by default equipped with multiple sensors, e.g., accelerator sensors, magnetic field, photo light detector, noise level sensor, etc. I have…

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June 1, 2019

Low-powered living body detection

A friend asked me to design a low-powered living body detection system for a rural farm in Indonesia. The constraints are no electricity and…

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June 1, 2019

Mailbox checker

As an online shopper, I need to regularly check my mailbox, 5 floors separated from home. It is really annoying to check whether a…

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June 1, 2019

Zwave+ vs. WiFi-based IoT devices

There are at least 4 competing IoT connectivity technologies that have already numerous rolled-out products in the market, i.e., RF-433 MHz, WiFi (ESP8266-based devices),…

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