http://www.mikrodenetleyici.com/forum XML içerik linki; mikrodenetleyici.com Forumlar : Son 10 Gönderilenler Thu, 11 Mar 2010 00:36:32 +0000 Tue, 09 Mar 2010 03:48:31 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 8.05 30 www.mikrodenetleyici.com/forum/RSS_topic_feed.asp http://www.mikrodenetleyici.com/forum/forum_images/banner4.gif http://www.mikrodenetleyici.com/forum http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1277&PID=4314#4314 Yazar: éGobaba
Konu: 8-Bit Transmitter Receiver
Gönderim Zamanı: 09 Mart 2010 Saat 03:48

emeğine sağlık..]]> Tue, 09 Mar 2010 03:48:31 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1277&PID=4314#4314 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4313#4313 Yazar: Qtahyam
Konu: pic de isim yazma
Gönderim Zamanı: 06 Mart 2010 Saat 12:40

haklısın sadece soru soruyorlar]]> Sat, 06 Mar 2010 12:40:21 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4313#4313 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1277&PID=4312#4312 Yazar: Qtahyam
Konu: 8-Bit Transmitter Receiver
Gönderim Zamanı: 06 Mart 2010 Saat 12:32

8-Bit Transmitter Receiver
The TWS-434 and RWS-434 are extremely small, and are excellent for applications requiring short-range RF remote controls. The transmitter module is only 1/3 the size of a standard postage stamp, and can easily be placed inside a small plastic enclosure.

TWS-434: The transmitter output is up to 8mW at 433.92MHz with a range of approximately 400 foot (open area) outdoors. Indoors, the range is approximately 200 foot, and will go through most walls.....

The TWS-434 transmitter accepts both linear and digital inputs, can operate from 1.5 to 12 Volts-DC, and makes building a miniature hand-held RF transmitter very easy. The TWS-434 is approximately the size of a standard postage stamp.


RWS-434: The receiver also operates at 433.92MHz, and has a sensitivity of 3uV. The RWS-434 receiver operates from 4.5 to 5.5 volts-DC, and has both linear and digital outputs.


approximately 35cm long. To convert from centimeters to inches -- multiply by 0.3937. For 35cm, the length in inches will be approximately 35cm x 0.3937 = 13.7795 inches long. We tested these modules using a 14", solid, 24 gauge hobby type wire, and reached a range of over 400 foot. Your results may vary depending on your surroundings.

The example above shows the receiver section using the HT-12D decoder IC for a 4-bit RF remote control system. The transmitter and receiver can also use the Holtek 8-bit HT-640/HT-648L remote control encoder/decoder combination for an 8-bit RF remote control system. Here are the schematics for an 8-bit RF remote control system:
Driving Relays:

Using the outputs of the HT-12D or HT-648L decoder ICs to drive relays is quite simple. Here are schematics showing how to drive relays directly from the data-output pins of the decoder.
Driving Relays:

Using the outputs of the HT-12D or HT-648L decoder ICs to drive relays is quite simple. Here are schematics showing how to drive relays directly from the data-output pins of the decoder.



20100306_133504_data.rar]]> Sat, 06 Mar 2010 12:32:48 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1277&PID=4312#4312 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1253&PID=4311#4311 Yazar: Qtahyam
Konu: pic16f84'te bir problem bir türlü çözemiyorum
Gönderim Zamanı: 06 Mart 2010 Saat 12:16

Benim yaptığım bu çalışmada (((umarım değil))) 100 de 100 çalışmaktadır. ]]> Sat, 06 Mar 2010 12:16:02 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1253&PID=4311#4311 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1267&PID=4310#4310 Yazar: Qtahyam
Konu: çizgi izleyen robot
Gönderim Zamanı: 06 Mart 2010 Saat 12:09

Biraz forumda aramayı zahmet etseniz bulacaksınız.
http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1224

http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1049]]> Sat, 06 Mar 2010 12:09:41 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1267&PID=4310#4310 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1276&PID=4309#4309 Yazar: Qtahyam
Konu: 4 channel IR remote with HT12E & HT12D chips
Gönderim Zamanı: 05 Mart 2010 Saat 10:14

IC HT12E (datasheet).
IC HT12D(datasheet)
20100305_111452_datasheets.rar]]> Fri, 05 Mar 2010 10:14:56 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1276&PID=4309#4309 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1276&PID=4308#4308 Yazar: Qtahyam
Konu: 4 channel IR remote with HT12E & HT12D chips
Gönderim Zamanı: 05 Mart 2010 Saat 10:12

Abstract:- This is a remote control using HT12E and HT12D chips. HT12D & HT12E are widely used encoder/decoder chips in remote control applications made by "Holtek Semiconductors". 4 different channels can be utilized for different applications.
Transmitter:-

The figure given below shows schematic diagram of transmitter using IC HT12E

Connections:- As shown in figure all the address lines A0-A7 are connected to ground. You can either connect all the lines to Vcc or to ground but keep in mind that on the receiver side you have to do same. This is to set same address both the sides. Resistor R1(1.1M?) is connected between oscillator pins (Osc1 & Osc2) to set transmitter frequency = 50×Receiver Frequency. Data lines D0-D3 are connected with switches S1-S4 through diodes D1-D4 respectively. The other terminal of all the switches is connected with ground. The TE pin (transmission enable) is also connected to all the switches through four different diodes D5-D8. The Dout pin is connected to one of i/p pin of AND gate IC 74LS09(datasheet). The second i/p of AND gate it tied to Vcc. The o/p of AND gate is connected with Reset i/p of IC-555 (datasheet). IC-555 is configured in astable multivibrator mode and it generates squarewave of 38 KHz continuously. The o/p of IC-555 drives two IR-LEDs and one red LED through transistor 2N2222A. Standard 9V battery is used as supply.

Operation:-

Whenever you press any key TE pin will be grounded through that diode, at the same time particular data line is also grounded.

So we can set the data at the same time we can pull the TE pin low by pressing single key

Now we know when TE pin is low the address and data are transmitted serially through Dout pin.

The Dout pin controls the operation of IC-555 through AND gate. When there is 0 at output the operations of IC-555 is stopped and if 1 at output then IC-555 will generate burst of 38 KHz.

So Actually Address and Data are together modulated by 38 KHz carrier frequency.

Because the o/p of IC-555 is fed to IR-LEDs they will generate IR light beam of 38 KHz   

If we press switch S1 then data word will be 1110 and address is of course 00000000. So the waveform will look like this

Receiver:-

Receiver circuit using IC HT12D is as shown below.

Connections:- All the address lines are connected to ground to set same address. Resistor R2 (51K?) is connected between Oscillator pins. All the data line D0-D3 are connected to different LEDs LED2-LED5 respectively through invertors IC 74LS04 (datasheet). LED1 is connected to VT (valid transmission) pin through transistor Q1 to indicate valid transmission. The output of IR sensor (datasheet) is connected to Din pin of chip HT12D.

Operation:-

When 5V supply is given to circuit all the data lines are low. Because of invertors all four LEDs (LED2-LED5) will glow.

Whenever you press any switch from Tx address & data are transmitted together

IR sensor will demodulate the 38 KHz IR light beam and gives this address & data to IC HT12D

IC HT12D first compares the address three times and if it matches it gives high pulse on VT pin (so LED1 will blink) and latch the data.

Suppose you pressed 'S4'. So the data transmitted will be 1110 and address will be of course 00000000.

HT12D receives the signals compares address thrice, gives high pulse on pin VT and then latch the data. Because data is 1110 (because of invertors it would be 0001) LED2 will glow and rest all the LEDs will remain off

Same way if you press 'S2' data will be 1011. So now LED4 will be ON and rests are oFF.

Simply you can see which ever switch is pressed on Tx side that particular data line is low on Rx side.]]> Fri, 05 Mar 2010 10:12:05 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1276&PID=4308#4308 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4307#4307 Yazar: éGobaba
Konu: pic de isim yazma
Gönderim Zamanı: 04 Mart 2010 Saat 05:53


SORU SORUYORSUNUZ DAHA SONRA ZAHMET EDİP TAKİP ETMİYORSUNUZ !  

                                    HAKKINI KAYBETTİN!..
]]> Thu, 04 Mar 2010 05:53:18 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4307#4307 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4306#4306 Yazar: éGobaba
Konu: pic de isim yazma
Gönderim Zamanı: 01 Mart 2010 Saat 07:32

LCD mi olacak yoksa dot matrix mi?

hangi dili ve derleyiciyi kullanıyorsun?

Hangi pic mikrodenetleyici kullanılacak?

genel anlamda söylüyorum;
1 adet PIC programlayıcı cihaz, bir kaç tane PIC (yanarsa diye) ve bazı elektronik malzemelere ihtiyacın olacak.

soruları cevaplarsan ona göre daha detaya ineriz ve bazı linkler eklerim oradanda araştırabilirsin. takıldığın yerlerde yardımcı olmaya çalışırım
]]> Mon, 01 Mar 2010 07:32:50 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4306#4306 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4305#4305 Yazar: blast.35
Konu: pic de isim yazma
Gönderim Zamanı: 28 Subat 2010 Saat 01:28

selam millet pic'le kayan yazı yapmak zorundayım bu sene daha yeni tanımaya basladık pic'i . bunu programlamam ve oluşturmam için nelere ihtiyacım var en kısa zamanda yazarsanız minnettar kalırım..]]> Sun, 28 Feb 2010 01:28:44 +0000 http://www.mikrodenetleyici.com/forum/forum_posts.asp?TID=1240&PID=4305#4305