Our ECE 4760 final project was to create a virtual saxophone that uses Direct Digitial Synthesis (DDS) to synthesize the output notes. Pushbuttons are connected to a PVC pipe to mimic the saxophone’s mechanical structure, and a microphone that detects noise is used to determine whether or not the user is blowing into the device. […]
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Get Your Bits Fit FitBit is evolving, from both a hardware and software perspective. In October 2011, the clip itself was upgraded and renamed the FitBit Ultra. The Ultra has the same features as the original FitBit, with one major addition: an altimeter. With the altimeter, Ultra knows how much elevation you lose or gain
So, you’re going to a conference/meetup/nerdfest and you want to do something that sets you apart from normal people. An LCD namebadge powered by an ATtiny2313 is a great way to do that. This is a general purpose LCD display unit powered by a 9V battery and a simple voltage regulator circuit (the same 7805
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