This is a dual HOA switch for motion sensing outdoor lights. I used common (inexpensive) motion sensing lights with some modifications and designed a PCB to fit in a dual gangbox, so the digital HOA, complete with nice LED indicators, can be mounted easily on the house with a customized dual gangbox faceplate. Each light can be controlled by a combination of the two motion sensors, and each light has its own ON time that can be set from the switches on the dual HOA interface.
Tag: Embedded
Wireless Field Switches
My team was asked to build a special purpose wireless transceiver pair for work with heavy equipment testing. I will not get into the details of the project or the design, but I will say that we were responsible for the parts selection, circuit design, software design, PCB (printed circuit board) design, and the prototype testing and troubleshooting.
Movie Prop Helmets
Each helmet has red (clear when off) LEDs in the shape of it’s character’s first initial. These letters pulse on and off when the thinktank device is inactive, and will transition to a fully illuminated state when the thinktank device is in use by the characters.
Above the initials are two rows of green LEDs which will be off when the thinktank is inactive and will “chase” or “sequence” at an increasing rate as the thinktank transitions to its active, or in use, state.
VCRBot
The VCRBot is a way to use a VCR, a video camera, and an inexpensive exterior light with motion detector to record the camera’s viewpoint onto a VHS tape only when something moves within the motion sensor’s field of “vision”.
In short, the VCRBot behaves similar to a person who would press the record button on the VCR and turn on the exterior light when motion was seen and then press the stop button on the VCR and turn off the exterior light when motion had not been seen for a while.