This project is part of my very own smart-home system built in my home to control devices across my apartment and measure temperature both indoor and outdoor. This system currently consist 6 working units:
- A central unit serving several python-based microservices and running an Angular-based UI on a 7" touchscreen.
- An indoor unit controlling two led-strips over my desk and measuring temperature in my room every 10 minutes.
- An indoor unit controlling an RGB led-strip over my bed.
- An indoor unit controlling my TV replaying the control-messages recorded from my TV-remote.
- An indoor unit to measure temperature in the Kitchen (currently out of service).
- An outdoor unit to measure temperature (currently out of service).
This unit is responsible for one task: to control the RGB led-strip over my bed.
The unit is based on a Particle Photon module with three potmeters as input and three IRLZ44N MOSFET to dim the intensity of the led-strips. The unit uses 12V input to power both the LED-strips and the controller (a small DC-DC step-down converter included). I had designed a custom box for the device and printed out with our 3D printer.
The unit uses a 2.4" TFT display to show current information and also, there is a small switch to switch on/off the display.
The firmware for the controller is developed with Netbeans using the Particle's official firmware repository as base. The communication in the whole system is based on MQTT, thus the firmware uses the hirotakaster's MQTT implementation to communicate with other modules - although I have implemented a wrapper class around the MQTT class to use C++11 features like lambda functions etc, but the previous version was used a plain-old TCP server socket which implementation is still in the Connection class.
The display is controlled using the Adafruit GFX library, but I have implemented a custom class to use custom command in my code.
You should able to build the respository simply issuing a make command, and to upload this image to a Particle unit, you should issue the make program-dfu PARTICLE_DEVELOP=1 PLATFORM=photon USE_SWD_JTAG=n MODULAR=n command.