When I first built the Heart rate measurement through fingertip project, the infrared LED and photodiode used for finger photoplethysmography were actually from salvaged parts, and therefore, I could not provide specifications for them in the article. As a result of that it takes quite a bit of time to replicate that project with a different set […]
At the present time, the rate of crime is increasing rapidly because it is a kind of evident from the actual fact that thefts became a matter of routine. Particularly these vehicles may incur huge losses on the part of the amount invested on these vehicles. To overcome this problem, there are numerous technologies are […]
The main concept of this project is to reduce the power theft by using an integrated energy meter such that whenever an energy meter is tampered, it sends an alert message to the concerned authorities through the GSM modem for indicating power theft. Day by day increase in the usage of electricity is leading to […]
Introduction This program is a network power resetter. It controls a solid-state-relay that is in series with 110VAC that supplies power to a satellite internet receiver, various routers, etc. Once every 24 hours it drops power for 10 seconds to allow the receiver and routers to start clean, something that seems to be necessary to […]
Introduction Flying drones have a wide range of applications and are becoming more and more popular. With that in mind, we decided to construct a balloon copter capable of fluid navigation in any direction. At the same time, we wanted our design to be reliable and capable of carrying a substantial amount of weight so […]
Why have an enclosure? The enclosure of a clock doesn’t tell you the time! So I built this PIC clock with no part that doesn’t serve an electrical function. The hanger is the ground. The microcontroller is the 40-pin PIC 16F877. I set it up, then let it run for a few weeks, saw how […]
My layout is shown below. It may not be as intuitive or informative as the layout on a PC display, but contains everything I have found necessary for control of the Mill. (and previously the DRO’s on my other Milling Machine and Lathe.) I should stress here, that this is an overlay – i.e. a […]
In February of 2007 I spent a little while prototyping a board that turns any bicycle wheel into a moving display billboard using a single string of LEDs. The idea was to do something that would be very visible, turn itself on and off automatically, have enough processing power to dynamically generate bike computer style […]
For our final project we implemented a speech recognition eye test that is capable of performing the entire Snellen eye test on its own. It starts by displaying large letters and waits on the user to guess which letter has been displayed. The user speaks his/her guess into the microphone. The speech recognition portion uses […]
This project controls two servo motors – both clockwise and anticlockwise and has variable speed. You can use the Joy Stick to “pan and tilt” a remote camera or provide “left-right-up-down” action for a crane or an animation on your model layout. The project also tests servo motors. The CIRCUIT The circuit is fairly simple. […]
