Few years ago we control the lights in the garden with a automatic-timer-switch, very nice but when the evening gets longer or shorter we had to adapt the timer each week. In that time I came in contact with programming microprocessors so my first project was born. The first garden timer was a simple 1 output. The timing was controlled by the PIC and every month I had to change the minutes. So back to the table and design the second garden timer able to control 3 relays – left, mid and right side of the garden. It provided also 4 modes: – always off – always on – from dusk to dawn – from dusk to timer and the timing was dedicated to a RTC DS1307.
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