IR Sensor with Buzzer

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rp.ir.buzzer Participant Join Date: Sep 2013 Posts: 1	IR Sensor with Buzzer 09/13/2013 11:13 PM
	Hello, I do not have much electronics idea. (but) I want to build an IR sensor with a buzzer. I browsed the net and found these two products which match my needs. need/requirement: buzzer should sound if distance to object is less than 20cm. 103db level sound should be ok. products i found: 1. sharp distance sensor: http://www.phidgets.com/products.php?category=2&product_id=3520_0 2. 3-28VDC PIEZO BEEPER: http://www.allelectronics.com/make-a-store/item/ES-10/XL-MINI-PIEZO-SIREN/1.html I am not sure how to put it together. can anyone advice please? any step by step guide available? thank you. Rajeev
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	Pathfinder Tags: buzzer IR sensor

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SolarEagle Guru Join Date: Mar 2007 Location: by the beach in Florida Posts: 33392 Good Answers: 1817	#1 Re: IR sensor with buzzer 09/14/2013 12:18 AM
	You need a micro-controller like an Arduino to program the signal to buzzer....You could just hack a garage parking sensor seems cheaper/easier... __________________ All living things seek to control their own destiny....this is the purpose of life
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user-deleted-1105 Guru Join Date: May 2007 Location: Harlow England Posts: 16512 Good Answers: 670	#2 Re: IR sensor with buzzer 09/14/2013 2:55 AM
	I do not have much electronics idea. Then start with a battery, some switches and a buzzer! As you learn more you can do more, but to jump in with overcomplicated stuff which you don't understand will be a frustrating waste of time and money. Trust me, it's just taken me several weeks of extreme frustration and anxiety to get working with a new microcontroller, despite 40 years in the business.Del __________________ health warning: These posts may contain traces of nut.
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#3 In reply to #2 Re: IR sensor with buzzer 09/14/2013 4:21 AM
	That's one of those things where 40 days in the business is easier than 40 years. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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09/14/2013 11:15 AM

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JRaef Guru Join Date: Sep 2006 Location: California, USA, where the Godless live next door to God. Posts: 4665 Good Answers: 804	#5 Re: IR Sensor with Buzzer 09/14/2013 3:14 PM
	You don't need all that complexity. Just get a proximity sensor that has a manually adjustable distance and a Normally Closed output, one that runs of 12VDC would be easy to find and will easily match to a 12VDC buzzer. Wire goes from 12VDC battery + terminal, to sensor + terminal, out of sensor switch to buzzer + terminal, out of buzzer - terminal back to battery - terminal. Some sensors may need the battery - wire run as well to power it. __________________ All I every really wanted to be, was... A LUMBERJACK!.
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Electroman Guru Join Date: Jul 2006 Location: Dunstable, England Posts: 2821 Good Answers: 45	#6 Re: IR Sensor with Buzzer 09/15/2013 6:22 AM
	What's all this talk of microprocessors? Keep it simple - as JReaf said (I think) All you need is a ready made sensor with adjustable limits and a buzzer, plus a power supply of course!! Most of us on here remember the 'old days' when a transistor was new fangled compared to the good old vacuum tubes (valves). Now a days you buy the completed sensor and buzzer and set it up to do what you want. Simples! __________________ A little knowledge is a dangerous thing - Googling is far worse!
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user-deleted-1105 Guru Join Date: May 2007 Location: Harlow England Posts: 16512 Good Answers: 670	#8 In reply to #6 Re: IR Sensor with Buzzer 09/15/2013 10:33 AM
	Long time no see Electroman, good to see you Del __________________ health warning: These posts may contain traces of nut.
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Electroman Guru Join Date: Jul 2006 Location: Dunstable, England Posts: 2821 Good Answers: 45	#9 In reply to #8 Re: IR Sensor with Buzzer 09/15/2013 11:35 AM
	Oh I've been around, lurking in the background Most of the posts have comments on by the time I see them though LOL __________________ A little knowledge is a dangerous thing - Googling is far worse!
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Pj3ns3n Power-User Join Date: Apr 2008 Location: UK Posts: 246 Good Answers: 6	#7 Re: IR Sensor with Buzzer 09/15/2013 10:16 AM
	I agree with some of the comments. I can buy a battery operated infrared light for £5 then simply swap the light for a buzzer, job done. If it needs more power replace the light with a reed relay and 470 ohm resistor to switch on something heavier. I hacked one of these to operate a camera. Easy __________________ Peter Jensen
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Shyam Guru Join Date: Aug 2006 Location: AM-51, Deen Dayal Nagar, Gwalior, Madhya Pradesh, MP 474001, India Posts: 3418 Good Answers: 32	#10 Re: IR Sensor with Buzzer 09/21/2013 11:19 PM
	The very first thing you need to understand that there is this background light. AC modulated transmission and demodulated receiver removes this DC or slow varying light background. There are many TV IR receiver in the range of 40kHz modulated frequency. Transmitters are simply LED driver with gated oscillator. You need reasonably high focused light output so narrow angle LED and photo-transistor with lens is ideal. you can transmit logic level 1 / 0 signals so activating alarm is very simple like YES and NO. Microcontroller is not required for activating alarm but if you use one then perhaps you can use its timer to set alarm for desired time duration and with memory to record information or transmit serially or take multiple sequential actions. __________________ Prof. (Dr.) Shyam, Managing Director for Sensors Technology Private Limited. Gwalior, MP474001, India.
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user-deleted-1105 Guru Join Date: May 2007 Location: Harlow England Posts: 16512 Good Answers: 670	#11 Re: IR Sensor with Buzzer 09/22/2013 5:48 AM
	On our landing we have an IR lamp that comes on if you get up in the night for a wazz. It makes a nice click so there is obviously a relay in there. They are cheap as heck. But one of those and shield/baffle the detector to give the range and angle of sensitivity you require. Replace the lamp with a mains buzzer/lamp/anything you like. Cheap simple... Or just by the sensor Like this one which has an output to drive a mains load. Del __________________ health warning: These posts may contain traces of nut.
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