A Compact, Wireless, Self-Powered Pushbutton Controller
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
Sun, wind and water flow as energy supply for small stationary data acquisition platforms
Computers and Electronics in Agriculture
HydroSense: infrastructure-mediated single-point sensing of whole-home water activity
Proceedings of the 11th international conference on Ubiquitous computing
The peppermill: a human-powered user interface device
Proceedings of the fourth international conference on Tangible, embedded, and embodied interaction
A wirelessly-powered platform for sensing and computation
UbiComp'06 Proceedings of the 8th international conference on Ubiquitous Computing
How smart is your smartcard?: measuring travel behaviours, perceptions, and incentives
Proceedings of the 13th international conference on Ubiquitous computing
Designing everyday technologies with human-power and interactive microgeneration
Proceedings of the Designing Interactive Systems Conference
A longitudinal study of vibration-based water flow sensing
ACM Transactions on Sensor Networks (TOSN)
Mapping hidden water pipelines using a mobile sensor droplet
ACM Transactions on Sensor Networks (TOSN)
DoubleDip: leveraging thermoelectric harvesting for low power monitoring of sporadic water use
Proceedings of the 10th ACM Conference on Embedded Network Sensor Systems
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We present WATTR, a novel self-powered water activity sensor that utilizes residential water pressure impulses as both a powering and sensing source. Consisting of a power harvesting circuit, piezoelectric sensor, ultra-low-power 16-bit microcontroller, 16-bit analog-to-digital converter (ADC), and a 433 MHz wireless transmitter, WATTR is capable of sampling home water pressure at 33 Hz and transmitting over 3 m when any water fixture in the home is opened or closed. WATTR provides an alternative sensing solution to the power intensive Bluetooth-based sensor used in the HydroSense project by Froehlich et al. [2] for single-point whole-home water usage. We demonstrate WATTR as a viable self-powered sensor capable of monitoring and transmitting water usage data without the use of a battery. Unlike other water-based power harvesters, WATTR does not waste water to power itself. We discuss the design, implementation, and experimental verification of the WATTR device.