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The Wake-on-Shake is intended to allow you to design a project which will remain inert for long periods of time (possibly up to several years, depending on the battery type used to power the project) until someone bumps, touches, or moves it. Its extremely low power consumption (<2uA @ 3.7V) means that, in most cases, aging related self-discharge of the battery is the limiting factor of the deployed lifespan.

Operation of the device is simple: connect a power supply (2.0-5.5V) to the input side, a circuit to the output side, and you're done! By default, the board will activate the load when it experiences a mild bump or tilt; the load will be powered for 5 seconds after that. Using a serial data connection, the sensitivity can be increased or decreased, as can the delay time.

Additionally, the “WAKE” pin allows the load to control when its power is discontinued. By pulling the wake signal positive (to at least 2.7V), the load will remain energized until it releases the pin. While it is possible to connect the load to the on-board serial port, allowing the load to access the ADXL362 and EEPROM storage of the ATTiny2313A, caution must be exercised when doing this to avoid sourcing current to the load through the serial port data lines on the ATTiny2313A, which could damage the ATTiny2313A as well as causing excessive off-state power dissipation.

Pages in this wiki

• Connection Reference
• Electrical Specifications
• Communication Settings
• Command Reference
• EEPROM Memory Space Reference