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Full-Text Articles in Computer Engineering
Design Of Hardware To Aid Smartphone-Based Oscilloscope App, Riddock Moran
Design Of Hardware To Aid Smartphone-Based Oscilloscope App, Riddock Moran
Honors Theses
A smartphone-based oscilloscope improves on traditional lab oscilloscopes in accessibility and portability but faces several performance limitations compared to traditional oscilloscopes. Among these, an oscilloscope app that uses the phone’s audio to read voltage signals will have a sampling rate and voltage bottlenecked by the capabilities of the audio codec, which will rarely exceed a rate of 48 kHz and 1 volt, respectively. Additionally, smartphones lack the ability to read line-in audio, allowing only one channel input through the microphone. Direct connections to an audio source may not be possible due to requiring an audio jack connection, and different poles …
A Precise Dispenser Design For Canine Cognition Research, Walker Arce, Jeffrey R. Stevens
A Precise Dispenser Design For Canine Cognition Research, Walker Arce, Jeffrey R. Stevens
Department of Electrical and Computer Engineering: Faculty Publications
Some forms of canine cognition research require a dispenser that can accurately dispense precise quantities of treats. When using off-the-shelf or retrofitted dispensers, there is no guarantee that a precise number of treats will be dispensed. Often, they will over-dispense treats, which may not be acceptable for some tasks. Here we describe a 3D-printed precise treat dispenser with a 59-treat capacity driven by a stepper motor drive and controlled by an integrated Raspberry Pi. The dispenser can be built for less than 200 USD and is fully 3D printable. While off-the-shelf dispensers can result in an error rate of 20–30%, …