icstation sale 0329
Home > DIY Module > Function DIY > DIY Kits Infrared Sensor Alarm Electronic Circuit Suite

DIY Kits Infrared Sensor Alarm Electronic Circuit Suite

13808
5 9
$3.35 $2.35
Contact us for wholesale price
Time Remaining:
- OR - - OR - Add to Wish List
Descrption: 
  This circuit design can realize the buzzer sounds when the hand is close to the infrared emission tube and the infrared receiving tube, the LED light is on, the sound is stopped immediately after the hand is removed, the LED light is extinguished, and the sensitivity is very high.
 
 The circuit design idea comes from the life scene where the bank automatically opens and closes the door. When people enter the bank, the door automatically opens and the door closes automatically. Or the faucet from a high-end restaurant such as KFC, when the hand is placed under the faucet, the water automatically flows out, and the water automatically closes after leaving.
 
  There are many life scenarios in this circuit application, which is a circuit that circuit designers must master. The infrared sensing circuit is mainly used to learn the working principle and usage method of the infrared transmitting tube and the infrared receiving tube, and at the same time grasp the practical application of the general-purpose operational amplifier LM358 as an arithmetic comparator.
 
  After the circuit is successfully manufactured, it must be debugged to achieve the corresponding effect. Only after understanding the working principle of the infrared sensing circuit can the relevant parameters be debugged.
 
Parameter:
Work voltage:DC 5V
 
Characteristics: 
  It is processed by 1.5mm high-quality electric wood board, the pad is enlarged, the wire is thicker, and the component layout is beautiful. It is specially designed for the training, and it is easy to withstand repeated and repeated desoldering, which can improve the use efficiency and high cost performance.
 
Principle: 
  The 5V power supply is connected, the infrared emission tube D1 is turned on, and the infrared light is emitted (the eyes are invisible). If the light is not blocked by the hand at this time, the infrared receiving tube D2 does not receive the infrared light, and the infrared receiving tube D2 Still in the reverse cutoff state. The voltage at the negative terminal of the infrared receiving tube D2 is still high and sent to the 3 pin of the LM358.
 
  The voltage of pin 2 of LM358 depends on adjustable resistor R3. As long as the adjustable resistor R3 is adjusted to the appropriate time (measuring the voltage of pin 2 of LM358 with a multimeter is about 2.5V), the voltage of pin 3 of LM358 can be guaranteed to be greater than The voltage of pin 2 of LM358, according to the working principle of the comparator, when V+ > V-, the 1 pin of LM358 will output a high level, and will be sent to the base of PNP type transistors V1 and V2 through current limiting resistor R4. , causing the transistors V1, V2 to be turned off, the buzzer Y1 does not sound, and the light-emitting diode D3 is extinguished.
 
  When the hand is close to the infrared emission tube D1, the infrared light is blocked and reflected to the infrared receiving tube D2, and the infrared receiving tube D2 receives the infrared light and is turned on immediately, so that the voltage of the negative electrode of the infrared receiving tube D2 drops rapidly. Send it to the 3 feet of the LM358.
 
  The voltage of pin 3 of LM358 drops to less than the voltage of pin 2. According to the working principle of the comparator, when V+ < V-, pin 1 of LM358 will output low level and send it to PNP type transistor through current limiting resistor R4. The bases of V1 and V2 cause the transistors V1 and V2 to turn on the buzzer Y1 and the LED D3 to illuminate.
 
  Through the above debugging, when the hand moves to the upper side of the infrared transmitting tube D1 and the infrared receiving tube D2, the buzzer sounds and the light emitting diode lights up. When the hand leaves the infrared transmitting tube D1 and the infrared receiving tube D2, the buzzer stops sounding, and the light emitting diode is extinguished, which produces an effect of sensing the hand.
There are currently no product reviews.

First we should say that ICStation doesn't accept any form of pay on delivery.Items used to be shipped after receiving the order info and payment.

1) Paypal Payment

PayPal is a secure and trusted payment processing service that allows you to shop online. PayPal can be used at icstation.com to purchase items by Credit Card (Visa, MasterCard, Discover, and American Express), Debit Card , or E-check (i.e. using your regular Bank Account). 



We are PayPal Verified 

 

2) West Union


 

We know that some of you do not have the Paypal account. 

But please take it easy. You can use West Union payment method.
Learn more at West Union at www.westernunion.com.
 
For the receiver info, please contact us at orders@icstation-team.com.
 
3) Bank Transfer / Wire Transfer / T/T
 

Bank Transfer / Wire Transfer / T/T payment methods are accepted for orders which the total price is up to US$500. The bank will charge about US$60 for the transfer fee if we do the payment in these ways. 

For other payment method, please contact us at orders@icstation-team.com for more details.

1. Yanwen / YunExpress / 4PX / China Post Airmail Service

(1) Due to the high risk of package lost recently, we have to stop using the free shipping way these days. Hope for your kind understanding! And the $5 is for tracking number and delivery insurance ^0^ Enjoy order from us. 

Free Shipping for all orders over $20 ^0^ (with free tracking number and delivery insurance fee)

(2) Shipping time 
Shipping time is 7-20 business days to most of countries; please view below table for exactly shipping time to your location. 

7-15 working days to: Most of Asia countries
10-16 working days to: USA , Canada , Australia , UK , Most of Europe countries
13-20 working days to: Germany , Russia
18-25 working days to: France , Italy , Spain , South Africa
20-45 working days to: Brazil , Most of South America countries

2. DHL/FedEx Express

(1)Shipping Fee: Free for the order which meet the following requirements
Total price of the order >= 200USD or Total weight of the order >= 2.2KG

When the order meets to one of the above requirement, it will be shipped for FREE via EMS/DHL/UPS Express to below country. 
Asia: Japan , South Korea , Mongolia . Malaysia , Singapore , Thailand , Vietnam , Cambodia , Indonesia , Philippines 
Oceania: Australia , New Zealand , Papua New Guinea 
Europe& America: Belgium, Britain, Denmark, Finland, Greece, Ireland, Italy, Luxembourg, Malta, Norway, Portugal, Switzerland, Germany, Sweden, France, Spain, USA, Austria, Canada
Note: Shipping Fee to other countries, please contact orders@icstation-team.com

(2) Shipping Time & Delivery Time

Shipping time: 1-3 days
Delivery time: 5-10 working days (about 1-2 weeks) to most of countries. 

Because the package would be returned to the sender if it had not been signed by the receiver , please pay attention to the arriving time of the package. 

Note:

1) APO and PO Box Addresses

We strongly recommend that you provide a physical address for order delivery. 
Because that DHL and FedEx are unable to deliver items to APO or PO BOX addresses. 
 
2) Contact Phone Number
Receivers' contact phone number is required by express shipping agency for the package delivery. Please provide us with your latest phone number.


3. Note
1) Delivery Time of mixed orders with items in different Shipping Status should be calculated using the longest estimate times listed. 
2) Chinese Holiday Reminder: During annual Chinese holidays, services from certain suppliers and carriers may be affected, and delivery for orders placed around the following times may be delayed by 3 - 7 days: Chinese New Year; Chinese National Day,etc. 
3) Once your order is shipped, you will receive an email notification from icstation.com
4) Track the order which with tracking number via below links:

YunExpress / Yanwen / China Post: www.17track.net/en
FedEx: www.fedex.com

 

Customers who bought this product also purchased

8-Channel USB Output Buck Converter 8USB DC-DC Step Down Power Supply Charging Module 5V 5A
$9.51
$13.59
30
10PCS USB Power Wire 100cm 5V USB Cable
$6.99
$9.99
30
10W High-Power Wireless Charging Transmitter Module PCBA Circuit Board Wireless Charger Sensing Distance 8mm
$3.59
$5.99
40
3-27V 1.5A Single Button Bistable Switch Module Flip Flop Latch Falling Edge Trigger Switch KY002
$2.02
$2.89
30
8M Recordable Sound Play Module MP3 WAV Music Voice Player With Volume Adjustment Lithium Battery Charging Circuit For DIY Music Gift Box Greeting Card
$6.29
$8.99
30
Colorful LED Tower Display Rhythm Lamp Light with Infrared Remote Control Electronic DIY Kits Brain-training Toy Gifts
$18.19
$25.99
30
5V 8W Mini Portable USB Powered Electric Powered Soldering Iron Pen Tip Touch Switch with Stand
$5.94
$8.49
31
500pcs 5mm White Green Blue Red Yellow LED Kits Component Kit Light Emitting Diode
$8.25
$11.79

Sold Out

30
Motherboard Circuit Board Component PLCC IC Chip Extractor Puller Clip Removal Tool
$1.81
$2.59
30
DIY Kit Simple Breathing Lamp Red/Green/Yellow Customize LED Dot Matrix Display Module
$6.99
$9.99
30
Intelligent Offline Voice Control Module Voice Recognition Chip  SU-03T
$3.91
$5.59
30
D2-6 Bluetooth Remote Control Smart Car Intelligent Robot Tracking Car Obstacle Avoidance Motor DIY Kits Tracking Smart Car
$8.39
$13.99
40

Your Recent History

DIY Kits Infrared Sensor Alarm Electronic Circuit Suite
$2.35
$3.35
30