Optical Rat Trap Trigger - دانلود رایگان
دانلود رایگان تعداد صفحه : 3Optical Rat Trap Trigger A simple circuit to make a better rat trap This circu
دانلود رایگان
| Optical Rat Trap TriggerOptical Rat Trap Trigger A simple circuit to make a better rat trap This circuit can be used to trigger a trap when a rat or other animal interrupts a beam of infrared light. You can use this to build your own trap, or to modify an existing one. I used it to modify a wire cage type of live rat trap. The advantages over a simple mechanical trigger are: much less prone to false triggering from vibration or from animals climbing on the outside of the trap less prone to non-triggering because the animal doesnt have to press or move anything live traps are less likely to injure the animal because it is less likely to false trigger when the animal is not all the way inside provides an audible indication when the trap has been sprung The disadvantages are: requires batteries and uses them continuously when armed Rats like to chew the wires. This particular design has no protection from ambient light, so it will not work in daylight or unusually bright artificial light. This could be improved by modulating the IR and matching filtering at the receiving end, and by some optics to make the sensor more directional. But the goal here was to create a very simple solution that was adequate for the intended use. Even in the brightest room in my house, it works fine. It fails outside in daylight, but thats not where I intend to use it. I used a four pack of NiCd C cells which delivers about 4.8V and has about 1500mAH capacity. These keep the trap functional for more than a week on a single charge. NiMH AA cells would be smaller and have about 1/3 greater capacity, but I used the C cells because I already had them and their size is no problem for my دریافت فایل جهت کپی مطلب از ctrl+A استفاده نمایید نماید |