Blower Control Unit 2, Particle Photon

thingiverse

An update to a previous project, https://www.thingiverse.com/thing:572282. Wanted to make the room controller less intrusive in the room. I updated some hardware and eliminated others. As shown, it all fits into the previous 2 X 4 electrical box and uses a standard modern cover plate. Below the display is a small vent with a mount for a Dallas Temperature sensor which I epoxy in place. The CPU tray included in the download section is set up for a Pro-Mini clone which presses into place. I have also created a tray for a SPARK CORE / Particle Photon. Under the CPU tray between the I2C .96" OLED two-color display is also a .5" X .5" push button switch for selecting options on the OLED. I had to create a "Switch Bridge" for the back of the display because the back of the display is not flat. Components mounted on the back side of the display are of different heights. This caused the display to stick if pressed on the right side. The bridge corrects this. Please note that thickness here is critical, print only in .1 mm layer height. Additionally, another .5" X .5" push button switch is mounted just above the display with a pin hole to access as a reset switch. At the top, just above the reset switch, is a slot for the 433 Mhz receiver. The switches I epoxy in place and use screws hold the CPU tray into place. Additionally, the very top and bottom holes must be tapped using a 6/32 tap for the cover plate. The pictures shown are the first ones, and can use some serious wire management. I do have a plate for the MicroView Display/CPU combo. Message me if interested. The MicroView works very well and is much easier to wire, however with the cost of the MicroView being $40, I chose to stay with the Pro-Mini and update to a two-color OLED. UPDATE: A CPU tray for the Particle Photon has been added to the .stl files. UPDATE: The OLED I use is the DIYMall display (printed on the back of the display). It measures 1.062" by 1.062". I tried what appeared to be the same display directly from China, but found their dimensions are 1.125 by 1.125", which will not fit.