Timeline for Connect PIR Motion Sensor to Air Pump
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
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| Feb 1, 2012 at 17:08 | comment | added | Peter Barnett | Okay - so if I'm understanding correctly, I will not need a relay because the air pump will have enough power through the mains adaptor? I'm not quite sure where the PNP inverter comes into play. How exactly is the inverter to be used? Basically I want the motion sensor to switch the air pump on whenever activated. There is no specific time length - I would just like it to switch on while there is movement and switch right off when it is still. Thanks again for the help! | |
| Feb 1, 2012 at 13:53 | comment | added | MikeJ-UK | @Peter Barnett - The details on the pump don't mention it's current requirements but I have a similar (HiGear) model which comes with a 1A mains adaptor so Russell's solution is more than adequate without the relay (with a PNP inverter as he mentions). You might need a pulse-stretcher if you need the pump to stay on for any length of time though. | |
| Feb 1, 2012 at 13:35 | comment | added | Peter Barnett | Okay thanks Russell and MikeJ for the input so far! Just to clarify, I'd need the PIR sensor, a relay and the pump device? I also wanted to note that I could possibly use a battery-powered air pump. Not sure if that would help or hinder. Any links to relay devices or anything else would be terrific! | |
| Feb 1, 2012 at 13:07 | comment | added | Russell McMahon♦ | @MikeJ-UK - Thanks. So if a relay is used a NC contact will work. If motor is driven directly it needs a jellybean transistor inverter. | |
| Feb 1, 2012 at 12:50 | vote | accept | Peter Barnett | ||
| Feb 1, 2012 at 12:36 | comment | added | MikeJ-UK | The Amazon page in the OP's link says that the PIR's output is open-collector! | |
| Feb 1, 2012 at 12:26 | history | answered | Russell McMahon♦ | CC BY-SA 3.0 |