Table of Contents
What is HT12E and HT12D?
HT12E is used to encode the data for RF Transmitter and HT12D is used to decode the data received by RF receiver. They are capable of Encoding 12 bit of information which consists of 8 address bits and 4 data bits.
How does HT12E and HT12D work?
It is commonly used for radio frequency (RF) applications. By using the paired HT12E encoder and HT12D decoder we can easily transmit and receive 12 bits of parallel data serially. HT12E simply converts 12 bit parallel data in to serial output which can be transmitted through a RF transmitter.
How do you test HT12E and HT12D?
The testing of IC HT12D will be measured by giving the input data to the pin AD12 and AD13 on the IC HT12E. Then, the addressing bits in the HT12D will be reviewed by using an oscilloscope.
How does HT12D decoder work?
By using the paired HT12E encoder and HT12D decoder we can transmit 12 bits of parallel data serially. HT12D simply converts serial data to its input (may be received through RF receiver) to 12 bit parallel data. These 12 bit parallel data is divided in to 8 address bits and 4 data bits.
What is HT12D encoder?
HT12D IC is a CMOS series 12-bit RF decoder. Mostly remote control applications have this technology. To receive the data between encoder and decoder address bits should be matched. The encoder can with any CMOS technology. Most modern applications use the encoder for decoding due to its simplicity and efficiency.
How do RF transmitters and receivers work?
The transmitter/receiver (Tx/Rx) pair operates at a frequency of 433 MHz. The RF transmitter receives serial data and transmits it wirelessly through through its RF antenna. RF receiver receives the transmitted data and it is operating at the same frequency as that of the transmitter.
How do I create an RF module?
Step 1: Parts List
- RF transmitter and RF receiver of 433 Mhz.
- 3 push buttons.
- IC HT12D.
- IC HT12E.
- Hearders (male or female it doesn’t care)
- 3 resistors with a value from (100 to 330) ohms.
- 3 leds any color 3mm of diameter (miniature)
- 1 Megaohm resistor for IC of the transmitter (IMPORTANT)
What is RF transmitter and receiver?
The RF transmitter receives serial data and transmits it wirelessly through through its RF antenna. RF receiver receives the transmitted data and it is operating at the same frequency as that of the transmitter.
How do you use a 433MHz RF transmitter and receiver?
433MHz RF Transmitter & Receiver Pinout
- DATA pin accepts digital data to be transmitted.
- VCC supplies power for the transmitter.
- GND is a ground pin.
- Antenna is a pin for external antenna.
- VCC supplies power for the receiver.
- DATA pins output the digital data received.
- GND is a ground pin.
What is HT12E encoder?
HT12E is an encoder integrated circuit of 212 series of encoders. They are paired with 212 series of decoders for use in remote control system applications. It is mainly used in interfacing RF and infrared circuits. It encodes the 12 bit parallel data into serial for transmission through an RF transmitter.
What is RF decoder?
RDF1. Description. The RDF1 is a complete FM receiver and decoder module in one, providing a complete radio system with up to four digital outputs and single serial data output when used with an RF Solutions FIREFLY, HORNET or 205 series Handheld transmitters.
How does the ht12d decoder work?
The HT12D decoder can not work alone. It works with another counterpart called an encoder. To receive the data between encoder and decoder address bits should be matched. The encoder can with any CMOS technology. Most modern applications use the encoder for decoding due to its simplicity and efficiency.
What are 12-bit encoders/decoders?
They are 12-bit Encoders/Decoders, meaning they can transmit 12-bit a data among them. But your encoder IC should not communicate with someone else’s decoder IC, so an Encoder and Decoder IC pair will share a common Address which is an 8-bit data.
What is the function of the ground pin of ht12d?
The ground pin will make common ground with power supply and external ground. Common ground will help the decoder to operate with external devices and modules. Pin10 to Pin13 is the data pin of HT12D. The output data will be in the form of logical voltage.
How does the ht12e actually work?
When the MCU is sending the 4 bits of data, as far as the HT12e is concerned it is just pushing one or more buttons. When the HT12e is active it sends those button states (data inputs) continuously, and the decoder’s data outputs follow them.