Lots of people feel a bit down when we get less natural light in the winter months. SAD lights have been around for awhile and can be purchased from a few places but Luke Skaff decided to build one from scratch. His design allows for a light output that is closer to what you get in real sun. “I made two full spectrum ceramic metal halide light therapy lights
This project allows you to automate the filling of water containers. In this case the need was to stop filling a horse water tank and automatically stop when it has been filled. A few stainless steel clamps are used to sense the water by conduction. The circuit is running off a 9 volt battery, it is powerful enough to activate the 12 volt relay and a voltage divider is
The Eyedrivomatic is a system that lets you Drive a Wheelchair using Eye Tracking Technology. Â “Eyedrivomatic’s software is in two parts, firmware for the arduino in the brain box, and a pc application which I have written in processing. Many eyegaze users will have software on their computer for communication and computer control. Our intention is that the pc software will be accessible through the users own computer control
Pax Instruments Inc is making an open source temperature datalogger. Charles made a great video going over the entire current prototype showing off the tech inside and reasoning behind many of the build and design decisions. The device is using a MCP3424 A/D, it has 18 bits of resolution so your measurements should be nice and accurate. There is also a lot of thermal management that has been done
Have a master lock that you forgot the combination to? Samy Kamkar shows us how to get in with a nice little motorized combo lock cracking device “Combo Breaker is a motorized, battery powered, 3D printed, Arduino-based combination lock cracking device. It is portable, open source, 3D models provided, and exploits a new technique I’ve discovered for cracking combination locks in 8 attempts or less, but in an even
Jeremy Morgan built a Raspberry PI 2 Weather Station. It collects all of the data from the sensors and saves to to the cloud using a Google Drive spreadsheet which is accessed using a JSON file. Via: Electronic Lab “For this project you will need: Raspberry Pi 2 or Model B – (Get one here for $35!) AM2302 Temperature / Humidity Sensor BMP180 Temperature / Barometric Pressure Sensor
This teardown that thegeekgroup did reminds me of technology gone by. There are lots of variations of this. The one I used had a different type of ink ribbon cartridge it was a ink impregnated cloth that would auto recycle so your text would just get fainter and fainter over time. If you want to change the font you just replace the font wheel. I am surprised that there
