After searching for an electronic door lock, and not being satisfied by what he found, Elmue decided to build his own. The design features a powerful battery back up, an easy to use interface, the ability to store up to 64 users, and it mounts inside the door so it’s not visible from outside or exposed to the elements.
This video shows the controller in action at the Rome MakerFaire.
Mick needed a simple and effective instrument to create drum beats without having to manually write them note by note. He wanted something more than most of the DIY MIDI controllers out there that use simple on/off buttons. The answer was to build his own using force sensitive resistors (FSRs).
The controller has 16 buttons using FSRs arranged in a 4×4 matrix. The FSRs can sense the amount of pressure applied to a button and use that information for things such as a velocity of a note, control change value, etc.
Dave built a home heating monitor to collect data on the duty cycle of all the heating zones in his house in hopes better understanding the activity off all the zones in order to reduce oil usage and save a few bucks.
The first version of the project didn’t pan out so well. The controller used didn’t work out so well. In version 2 of the project Dave used Teensys to take data measurements and send the data another controller.
Dave found that storing the data on a webserver is easier than storing it in an embedded device, and displaying the data in HTML on a web page is more flexible that doing it in a Windows app.
Timothy used an orphaned micro speaker, a jiggle-switch motion sensor, and a blue LED to make the improvements. The motion sensor allows for the TARDIS landing sound to be made when the car is touched.