In this GSR-Monkey (Skin Conductance Measurement System) Martin Sona uses the principle of galvanic skin response to plot some data onto a grid. Two people can be connected and monitored at the same time. I can imagine using this system as a two way lie detector, how often do you get to turn the tables when performing a lie detector test? Via: Hacked Gadgets Comments “The hardware (besides the PC
I made a PWM Fan Controller to cool my external hard drive that got quite warm when it was running for an extended period of time. There are 4 videos documenting the build below. Have a look at the project page for the schematic, code and additional information. The heart of the PWM Fan Controller is a PIC 12F675 microcontroller. This microcontroller is reading the analog output of a LM35
Strobes are an effective way of creating atmosphere. Wizz Engineering designed a huge Strobe Array which used 24 small strobe lights that were controlled using custom DMX stage lighting equipment. “The Strobe Array is a matrix of 8 x 3 small 10W stroboscopes. Each strobe has a relay soldered into it which forces it to flash, and the relays are controlled independently by a MPLI DMX512 interface. Patterns where selected
Our friend Frank from theworkshop.ca has just completed the Dune Buggy Electric Conversion Part 4. We have been following this project right to the stage it is now, as in part 3 of the Dune Bug E build there was lots of fabrication. The machine is really taking shape now! The re-use of existing mechanical parts is great, it demonstrates that there is no need to always run out and
If you need to monitor a fan on a piece of equipment this PC Fan Failure Alarm from PCB Heaven should fit the bill. The RPM monitor line is used to determine what the RPM of the fan is and if it falls below an adjustable threshold the alarm is tripped. Heat buildup due to a faulty fan can do some serious damage in a short time, this simple circuit
Owen sent in his cool Touch Screen Hack for his TI 84 Plus Calculator. He is using an Arduino to read in the data from a Nintendo touch screen, the touch data is then sent to the calculator’s serial port so that it can then graph images based on where the screen is being touched. Did I mention that Owen is 16! I am trying to think what I was
The time will come when you need to have some distance between sections of your project, or you just need a remote way of interfacing to it. Peter Jakab has developed this Infrared or Radio Remote Control Project which should fit the bill. If you have line of sight you can use IR to create the link, if you don’t you can simply use RF. The existing design has a
