Showing all posts tagged iot:

Home Automation: Setting up Node-Red under Docker on Synology NAS, with MQTT and Telegram Integration

Previously I installed some sensors around my home, and got them to update their status into an MQTT Message Broker. The Message Broker acts as a central nervous system for the apartment, making the status of sensors available to everything. Knowing status alone is not enough, we must be able to "do" things with the knowledge. We want to be able to transform the status from one form of information to another, to make decisions by combining inputs from different things, and finally, to act ...

Home Automation: Setting up Mosquitto MQTT Broker under Docker on a Synology NAS

Many moons ago I set up a sonoff basic power relay with tasmota firmware and a Mosquitto MQTT Message Broker on a raspberry pi so that I can switch my 3D printer on and off remotely. I've recently added a few more tasmota devices in my apartment for home automation, and wanted a more stable platform for my mosquitto MQTT broker. I've also been playing with Docker on my Synology NAS (installed via the Synology Package Manager), and since that has a redundant storage, a UPS, and is already ru...

Home Automation: Sonoff RFBridge 433Mhz and Tasmota Firmware

I recently install two 433Mhz radio-frequency gadgets at my front door ... a wireless pushbutton and a wireless door sensor. The pushbutton costs USD3.55 from banggood.com. It has a replaceable battery and can be fixed to a wall using screws or double sided tape. When the button is pressed, it broadcasts a unique code on 433Mhz, just like an automatic gate remote control. The door sensor is a combination of a reed switch and magnet, and costs USD5.30 on banggood.com. Like the push button,...

New Toy: WiFi Controlled AC Switch for My 3D Printer - Hacked Itead Sonoff

Short Shorter Story A few weeks back I discovered that the stepper motors on my 3D printer were warm to the touch, even when not in use. I asked on the facebook group and learned that the motors are kept powered to prevent the extruder from being accidentally moved. This doesn't work for me, as since the printer is on a different floor and operated remotely, I like to leave it powered on. But I didn't like the idea of having the motors powered. So I decided to look for a remotely controllabl...