Pin Number. Pin Name. These are the 8-bit address bits, which is used to protect your data. We should set the bits in same pattern on Encoder and Decoder IC to pair them. Connected to the Ground of circuit.
|Published (Last):||14 February 2014|
|PDF File Size:||10.24 Mb|
|ePub File Size:||5.48 Mb|
|Price:||Free* [*Free Regsitration Required]|
Pin Number. Pin Name. These are the 8-bit address bits, which is used to protect your data. We should set the bits in same pattern on Encoder and Decoder IC to pair them. Connected to the Ground of circuit. These four pins are used to send data, the data encoded here will be decoded on HT12D IC sharing the same address bits. Transmission Enable TE. This pin has to be connected to Ground 0V to enable the Transmission.
The IC has a built in oscillator. This oscillator can be used by connecting these two pins through a 1M Resistor. The Encoded 12 bit output data can be obtained from this pin. Can range from 2. These two ICs together form an Encoder and Decoder pair. So out of the bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data. So if you are working on a project which has to transmit a 4-bit data from one end to other either by wire or wireless then this IC pair will be best suited for you.
The primary function of HT12E is to encode a bit and send it out through the output pin. The IC is has a wide range of operating voltage from 2. Pull the Transmission Enable pin pin 14 to ground to activate transmission. For decoding a data the IC will requires an oscillator, luckily this IC has one in-built. The 4-bit data that has to be sent has to be given to the pins AD0 to AD1 and an address of 8-bit has to be set using the pins A0 to A7.
It is very important that your Decoder should also have this same address for them to talk to each other. In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground. If you want security you can connect any of the 8 pins to 5V to make it high.
They can also be connected to switches to manually send and receive data. In this image I have made all four data bits as zero low , when this is decoded we will get the same kind of bits on the output side of HT12D, similarly we can make any changes on these 4-bits and they will be reflected on the output side of the HT12D decoder IC.
The encoded bit can be obtained from the Dout pin pin This data should be sent to the HT12D for decoding, it can either be sent directly through a wire or by using a wireless medium like RF or IR. You can know to set up the HT12D after this from here. Subscribe to stay updated with industry's latest Electronics components and news. A basic connection diagram for the HT12E IC is shown below In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground.
Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc.. Component Datasheet. HT12E Datasheet. Tags RF. Get Our Weekly Newsletter!
Make a RF Transmitter and Receiver With HT12E & HT12D
Here we go, in this instructable i'll show you mi basic rf transmitter and receiver ready to be used! Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. Pin Asignement of receiver direction, it mean it can changing of adresses for comunication individualy if is needed. In this ports it have to put a "oscillation resistor" very very important use the value of 1 M ohm. In this ports goes connected a resistor with a value of 51 k ohms or very very close value like 50 k or 52 k IMPORTANT: Don't change the value of this resistor if you make that your circuit it doesn't work.