If you like playing with sounds you will love the NoizBox. Listen to the audio clip of it in action. If you want to make your own Seb has provided the schematic, parts list and code for the PIC microcontroller on his site. “The stripboard ‘touchpad’ on the right of the right panel was added to give some fingertip control over the second modulation source depth and frequency. The top
This is a nice simple sound meter indicator. Small enough to build directly onto a perf board and all of the components are quite common which will keep the build cost down. “This project uses an LM3915 bar-graph IC driving two sets of ten LEDs for a 30dB range. The circuit is unique because it has an additional range of 20dB provided by an automatic gain control to allow it
Why buy an off the shelf product if you can make it yourself. That is what some guys at Cornell University decided to do when they needed an RFID reader. RFID Books “For our final project, we designed and built (and exhaustively tested) an RFID-based proximity security system for use with Cornell Identification cards, which have been RFID-embedded since fall of 2003. The idea for this project was sort of
Nick Dawkins has made an interesting spinning LED device. As it spins it can display the time and a picture of the globe. Watch the video. “My device uses 19 LED’s and a 24V motor for the main drive. For an easier build I decided to use a battery to power the PCB and LED’s. If enough interest is shown in this device, I will update the site with full
Want to stick a motor onto your bicycle? Well check out this project. “The current version is what I am calling v1.5, which is the same bike as v1.4 but with some basic changes: a new timing belt drive system with a chain final drive. Basically, the motor drives a belt that spins a secondary shaft or ‘jackshaft’ mounted close on the motor and spinning on ball bearings. This shaft
Here is a way to make your Robosapien smarter, all it takes is a brain implant. Watch the video to see what the enhanced Robosapien can do. Here is the kit you need to do it yourself. “We hacked a Robosapien just because we thought they were so cool. After taking our robot on a couple of field trips, we were ask so many times “How did you do that?”
Build a laser lap counter for your RC car. In part two of the build you can add a number of IRDA sensors to the project to make it even better! “The two channel system shown below includes two lasers, two photo transistors, one inch tubing, one inch round tubing (to mount the lasers) and a microcontroller system to tie it all together. The main control board for this system
