Minute timer

par ledoo20
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Minute timer is a simple circuit that audible signal informs the end of the specified time. The device is managed by a microcontroller, and the device is powered by two AA batteries 1.2 V or 1.5 V. The timer is activated by simply entering the desired time interval using the key, and the time remaining until expiration, can be read from a bi color flashing LED.

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HW/SW electronic design, PCB layout, simulations, Microchip, MPLAB, battery management, power electronics, CAN, RS232 ... [login to view URL]

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