Passive Infrared Sensor (PIR)

Highlights Powered by the alarms PIR No contact with the PIRs actual sense circuits, so no interruptions to the alarm functionality Replicates where I initially used an expensive Z-Wave Fibaro Universal Binary Sensor FGBS-001 / FGBS-321 I initially set out to replace the Z-Wave unit with a similar setup. I placed an optocoupler in series with the trip circuit and calculated the various resistances etc to replace one of the standard End Of Line / Tamper resistors. This worked, but I always felt a little funny about modifying a core security…

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Power Usage Sensor

Highlights Standard MySensors Pulse Meter 3DU5 phototransistor detects meter pulses   WARNING: This build works around high voltage. My Company and I accept no liability whatsoever for your own well being or that of your electrical gear.     /** * The MySensors Arduino library handles the wireless radio link and protocol * between your home built sensors/actuators and HA controller of choice. * The sensors forms a self healing radio network with optional repeaters. Each * repeater and gateway builds a routing tables in EEPROM which keeps track of…

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LIFX

While the LIFX LED bulbs are not part of the MySensors network, they are still part of the Smart Home. LIFX bulbs connect directly to the Wi-Fi network and require no additional hardware. We use the LIFX application for additional effects, but keep simple, default lighting settings as quick actions in OpenHAB. The bulbs are allocated Static IP addresses and physically left on all of the time. They are controlled by OpenHAB with executed shell scripts. In our case, the lounge LIFX bulbs have been retrofitted into what was two…

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MySensors Controller, OpenHAB, RaspberryPi & MQTT

Smart Home Our Smart Home primarily consists of scratch built, MySensors components. “MySensors is an open source hardware and software community focusing on do-it-yourself home automation and Internet of Things” I started off using a single Z-Wave binary component and USB stick, but realised it would be expensive to scale and still not do everything I wanted. MySensors components are build using cheap Arduino computers and standard electronic components. Time & effort is all that is required to piece things together. MySensors Controller While the MySensors MQTT Gateway acts as…

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MQTT Gateway

I choose an MQTT gateway over an Ethernet one so it could be connected to the network anywhere in the house and not be tethered to a specific device. Built using instructions at MySensors. Parts include: Arduino Nano NRF24L01+PA+LNA wireless module W5100 LAN Ethernet Shield When I originally wanted to add MY_SIGNING_SOFT, there wasn’t enough memory available on the Nano for that and the MQTT code. Answer: trick the Nano into thinking it’s an Uno and it frees up more memory. My experiences and more information available in the MySensors…

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Daikin Heat Pump

Highlights Powered by Daikin Direct injection to Daikin IR Receiver (no IR blaster) Direct feedback OpenHAB controlled to activate for heat when below 11 degrees and room has been marked as in use. Opposite will occur when I code for the opposite in summer time here. Heat pump remote can still be used and OpenHAB syncs to its state   WARNING: This build works around high voltage and directly injects into your heat pump. My Company and I accept no liability whatsoever for your own well being or that of…

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TV Backlight

Highlights 5050 RGB LED strip 12V power supply 12V for the LED Strip LM2596 buck to drop the 12v down to 5v for the Arduino (because the node itself is left on all the time, I figured the buck is more efficient) RFP30N06LE Mosfets I originally thought I wouldn’t be a fan of light behind the TV. This was due to a friends mum always  placing an old lamp behind an old CRT. The eyes just never liked it. However, I was blown away instantly by how much better it…

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Garage Door

Hacked Merlin garage door opener. Consisting of MySensors Actuator circuit for controlling open/close and light 2 x Binary Sensor (for Open and Closed status) Powered by the Merlin door opener with LM2596 buck to drop 16v down to 5v Includes home temperature backbone for sensors in the garage, attic, outdoor and in the gas heater cavity (more for single sensor convenience and power source reuse than anything else) Automatically opens the garage when I return home on my scooter via OwnTracks, and notifying OpenHAB via MQTT when I travel through…

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