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    Monitoring Temperature and Humidity with Arduino and MQTT (ESP32)

    by Douglas Tober December 20, 2020

    Background This is a quick tutorial for beginners – using ESP32 & DHT11 to collect sensor data and publish it using MQTT. Mobile and server apps can subscribe to the temperature and humidity data from the DHT11. In a future tutorial, I’ll be showing how…

    Architecture, Raspberry Pi 2
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    MQTT Overview: Simple Protocol for IoT and Messaging

    by Douglas Tober December 18, 2020

    What is MQTT? MQTT is an extremely lightweight protocol that allows for messaging over TCP. It is optimized to handle an insane number of connected clients and increases messaging stability over spotty networks. Although MQTT has been around since 1999, the popularity of the protocol…

    Architecture, Raspberry Pi 1

    How to: Ultrasonic Bench Press and Squat Rep Counter – ESP8266

    by Douglas Tober November 8, 2020

    How can we prove my honesty and simultaneously resolve the issue of losing my rep count? There could be only one solution: create an automatic rep counter device using Arduino…count barbell reps! But, in order to do this, we’d need a few different components to…

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