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Recent content by TonyS
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Garage Door controller reverse function
Many years ago I brought a Sears (US) one to Europe. That had a synchronous motor with a perforated disc that chopped the light to a photo transistor. The motor ran at constant speed until the limit switches were reached. When it slowed down, because of an obstruction, a comparator circuit that...- TonyS
- Post #2
- Forum: General Electronics Discussion
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Transmit audio to a receiver on a mast to scare birds
I have tried to use an LDR with a solar mole scarer that worked off 3V but found it too difficult. The advantage of the solar powered charger was that there was space inside the sealed package to incorporate a few components. The 6V device has 4 D cells which take all the space. I find the... -
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Transmit audio to a receiver on a mast to scare birds
This is a picture of the top of the mast of a sailboat. The devices you show are for pigeons or larger birds - where they are effective on flat surfaces. The problem we have is with starlings who can sit on thin vertical wire. There is also the problem of getting up the mast to do anything. You... -
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Transmit audio to a receiver on a mast to scare birds
Thanks for your reply. I have also thought of your idea. However, there are a number of points. 1. Dawn and dusk change continuously. This is only a solution if it can be left for weeks at a time to operate. 2. I don't know how to design a timer that would be programmable for 2 periods of... -
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Transmit audio to a receiver on a mast to scare birds
Hi, I am new to this forum but need some help. On our marina we have a problem with birds perching on the top of masts and making their mess on the deck below. I have had success with a mole scarer that emits a 500Hz pulse (buzz) for a few seconds every minute. It is hoisted to the top of the...
