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Submitted By		DonMcRon

Total Votes		10

Current Rating		1.93

Title		solar powered mole repeller

Abstract		Maybe you know the solar powered mole repeller you can by for small money at the next discounter. They consist of a housing, a solar cell, 2 accumulator cells (in sum 2.4V), a small PCB with a discrete timer electronic and a buzzer. The buzzer is driven by the timer electronic and generates a short sound followed by a long break. Unfortunately, most of these low cost repellers do not work: the discrete implementation of the long time constant is very sensitive to leakage currents (moisture!). Furthermore the sound and its following break are periodic and my mole has accustomed himself to the repeller. Therefore I improved my repeller: 1) I replaced the the discrete timer with a MSP430F2011. Time base is the internal 32kHz oscillator which can not be affected by moisture on the PCB. 2)

Project Files & Documentation		32959736-f787-4443-ad83-ff5dbe4fac32.zip

*Creativity		5 is highest; 1 is lowest

*Design Efficiency		5 is highest; 1 is lowest

*Technical Complexity		5 is highest; 1 is lowest