More goings on

Up early, off for a walk, collected some more stones, returned home a couple of hours later and had a late breakfast. It was Thursday. It began well enough, bright and sunny but the clouds began to drift in and drop their load of rain. It got colder as forecast but it wasn’t too bad. E went to do the weekly shopping before noon, the second time in two weeks. She traditionally goes shopping in the afternoon but I fancy she has decided earlier is better. I think it is too as it leaves the rest of the day for her to do other things. I could go shopping with her but as she takes along her mom my presence wouldn’t be appreciated, I would spoil their routine. As it happens I don’t much like shopping for food so it suits me fine to stay away. I was able to concentrate on my little project. Having collected the necessary components I needed to build the interface unit for controlling the light in the garage I discovered I had a more suitable relay for the job. Initially I thought I had only one which operates on a 12 volt DC (direct current) supply which necessitates the use of a rectifier but I found I had one that operates on a 12 volt AC supply so I didn’t require the rectifier. This made the task far easier as I only required two components in the unit……

You can see the relay on the left inside the box and the transformer to the right. I rigged it up for testing by plugging it into a wall socket as it will be done when installed in the garage. I connected the reed switch (shown lying on the lid) in order to test the circuit. As the magnet was brought close to the reed switch the relay was activated. The integral switch in the relay will be used to switch on the light. The whole unit will only power up when the outside photo cell senses it is dark. The next phase is to install the wiring to the photo cell. Next I have to fix the reed switch in such a position to allow an existing magnet on the door to operate it when the door is opened and to install the wiring to the switch itself. Finally I have to purchase an LED floodlight then install the wiring to the control unit. As time permits I will get those things done.

Shirley Anne

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