This this radio frequency rf transmission system employs rf circuit. The programmed addressesdata are transmitted together with the header bits via an rf or an infrared transmission medium upon receipt of a trigger signal. Functional description operation the 212 series of encoders begin a 4word transmission cycle upon receipt of a transmission enable te for the ht12e or d8d11 for the ht12a, active low. Ht12e is a 2 12 series encoder ic integrated circuit for remote control applications. Rf based wireless remote using rxtx modules 434mhz.
Ht12e encoder ic for remote control systems datasheet. The wireless data transmission is done using 433 mhz radio frequency signals that are modulated using amplitude shift keying ask modulation technique. In addition, this encoder ic is easy to implement and simple to use. Ht12e encoder ic can be used only with its pair ht12d. Wireless transmission can be done by using 433mhz or 315mhz ask rf.
The encoder ht12e encodes these parallel signals into serial bits. This circuit utilizes the rf module txrx for making a wireless remote, which could be used to drive an output from a distant place. Ive shorted the testar transmission pin on the encoder chip to ground so that it keeps sending datathe. The capability to select a te trigger on the ht12e or a data trigger on the ht12a further enhances the application flexibility of the 2 12 series of encoders. Wireless transmitter and receiver using ask rf module. The rf transmitter with and a good antenna can sent data up to 500 ft outdoor and no osbtacles the operation voltage of rf transmitter is. By using the paired ht12e encoder and ht12d decoder we can easily transmit and. They are capable of encoding 12 bit of information which consists of 8. I find using the simple rf modules with the virtualwire library to be pretty robust. Ht12e datasheet pdf 1 page holtek semiconductor inc. It encodes the 12 bit parallel data into serial for transmission through an rf.
They are paired with 212 series of decoders for use in remote control system applications. The transmitter module converts parallel data into serial by using ht12e encoder. They are paired with 2 12 series of decoders for use in remote control system applications. Ht12e and ht12d pdf the ht12e encoder ics are series of cmos lsis for remote control system applications. By using the paired ht12e encoder and ht12d decoder.
It is mainly used in interfacing rf and infrared circuits. The capa bility to select a te trigger on the ht12e or a. Like all my instructables you cand download the pdf circuit ready to print and. Ht12d simply converts serial data to its input may be. Making a simple wireless transmitter and receiver using encoder and decoder. They are paired with series of decoders for use in. The decoders receive data that are transmitted by an encoder and interpret the first n bits of code period as addresses and the last 12n bits as data, where n is the address code number.
Holtek, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. These two ics together form an encoder and decoder pair. I then realised that i could remove the ht12e encoder ic and use the arduino to drive the rf transmitter directly but the info in the pdf of the ht12e. Ht12e is a series encoder ic integrated circuit for remote control applications. As soon as te returns to high, the encoder output completes its final cycle and then stops. It is commonly used for radio frequency rf applications. The decoders receive serial addresses and data from a programmed 212 series of encoders that are transmitted by a carrier using an rf. These ics are commonly used with rf pairs or ir pairs. Rf and ir modules can interface with microcontrollers directly which requires a little bit complex programming. An rf transmitter and receiver pair is used for wireless communication. Rf based wireless remote using rxtx modules elementzonline. I used the rf link with the encoder decoder chips as a dumb switch which worked.
Ht12e and ht12d are encoder and decoder which can transfer four bit data of the same eight bit address only with only one channel. So if you are working on a project which has to transmit a 4bit data from one end to other. Fri, 12 oct gmt ht12e encoder ic ht12e datasheet pdf ht12e is an encoder integrated circuit of. Ht12e is an encoder ic for rf and ir modules mostly. The capability to select a te trigger on the ht12e or a data trigger on the ht12abc further enhances the application flexibility of the 212 series of encoders. Push buttons 3 nos leds 3 nos 1m ohm, 47k ohm and 470 ohm resistor. Series of encoders, ht12e datasheet, ht12e circuit, ht12e data sheet. With the help of our friends ht12e encoder and ht12d decoder and a. Ic ht12e datasheet pdf ht12e is a series encoder ic integrated circuit for remote control applications. Ht12e rf encoder ic pinout, application, examples, and. Pdf icon ht12e is an encoder integrated circuit of series of encoders.
By using the paired ht12e encoder and ht12d decoder we can easily transmit and receive 12 bits of parallel data serially. This can be used in most of the remote control applications. Ht12e datasheet pdf 12 page holtek semiconductor inc. Let me give brief intro to these rf modules before getting into the project. Rf transmitter 433mhz and receiver using ht12e ht12d. They are 12bit encoders decoders, meaning they can transmit 12bit a data among them. Module used in our project contains two units transmitter and receiver. The capa bility to select a te trigger on the ht12e. Ht12e datasheet, ht12e pdf, ht12e data sheet, ht12e manual, ht12e pdf, ht12e, datenblatt, electronics ht12e, alldatasheet, free, datasheet, datasheets, data sheet. It is a 12bit decoder that uses 8bits for address and 4 for data. The decoders receive serial addresses and data from a programmed 2 12 series of encoders that are transmitted by a carrier using an rf. For proper operation, a pair of encoder decoder with the same number of addresses and data format should be chosen. In order to implement the wireless transmitter and receiver, we use an encoder ic ht12e. Ht12e is a 212 series encoder ic widely used in remote control and very common among radio frequency rf applications.
Arduino based rf controlled robot full project with. The content and s of the attached material are the property of its owner. This ht12e ic capable of converting 12 bit parallel data inputs into. The capability to select a te trigger on the ht12e or a data trigger on the ht12a further enhances the application flexibility of the 212 series of encoders. Remote control encoder ic online from elcodis, view and download ht12e pdf datasheet, specialized specifications. They are capable of encoding 12 bit of information which consists of ht12e and ht12d pdf the ht12e encoder ics are series of cmos lsis for remote control system applications.
A wireless radio frequency rf transmitter and receiver can be easily made using ht12d decoder, ht12e encoder and ask rf module. Rf transmitter with ht12d and receiver ht12e datasheet. Of this series, the ht12d is arranged to provide 8 address bits and 4. The ht12a additionally provides a 38khz carrier for infrared systems. Ht12e datasheet, ht12e holtek encoder datasheet, buy ht12e encoder ic. Pdf wireless remote using rf module international journal of. The ht12e encoder ics are series of cmos lsis for remote control system applications.