This project has been design around HT12E and HT12D encoder / decoder chips from Holtek. With jumper selectable address on the receiver. The HT12E Encoder ICs are series of CMOS LSIs for Remote Control system applications. They are capable of Encoding 12 bit of information which consists of 8. Robokits India HT12E & HT12D Encoder and Decoder IC for RF Modules [RKI- ] – The HT 12E Encoder ICs are series of CMOS LSIs for Remote Control.

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Full Name Email Address. The output from the encoder can be used in various ways; for example to feed a Radio Frequency or infrared transmitteror it could be directly connected to a decoding processor. Return and Refund Policy. The GPIO pin acting as the trigger function needs connecting via an inverter circuit. TB Stepper Motor Driver 4. It could be said that this is a very convoluted way to use this technology but it was really useful to experiment and prove that it was possible.


The transmission of the data stream can be over an RF link or direct connection using 2-core cable. So, you are saying, when you grounded all the pins on the left of HT12D and 12E, it worked? Found this item with same quality and at a lower price but prefer to buy from robokits. Sign up or log in Sign up using Google. All is working now, thanks to all. Email Required, but never shown. Easy to Use, Versatile Robotics Kits Guilherme Garcia da Rosa 2 3 7.

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Yah but I agree. Customers who bought this product also purchased It would be possible to control literally hundreds of external devices this way. Easy Interface with and RF or an Infrared transmission medium.

The outputs from the HT12D decoder can be used to switch connected logic circuitry or other attached devices via suitable interfaces. I began to think about how I could use this technology with the current range of micro-controllers such as the Arduino and the Raspberry Pi, together with other potential uses.

With the possibilities of using multiple decoders HT12D all ‘listening’ on their individually configured addresses it is possible for the Raspberry Pi or Arduino to control both the address values and control the use of the data pins. Buy 15 or more pieces to get Free Shipping Option Availability: Mercury ball tilt h1t2e 5mm dia.

Posted by Nigel Cleaver at Pabitha Pabi 25 June at Thanks for all your awnser, after studying a little bit into the RF module I found out my problem, the left side of both encoder and decoder are the Address PIN, which means they will only communicate if those addresses are the same, that was what I was making wrong, I left them all at 1 and changed the resistors in them both cause the TX need to have 20 times the resistence of the receiver, in other words 50k and 1M resistors.


I wondered whether these processors were still available – they are! Did you really need to post that many images without the full URLS, no less?

Post as a guest Name. Note there is a gap on both sides down ht12f middle for the Blue and Red outer rails. I know but, and I’m going to sound like Olin here it should be easy to see how inconvenient it is, even for a new user. Remember I said check power? I haven’t drawn any circuits for this as the interfacing is straight forward as both the Raspberry Pi and the HT12E operate at 3.

The encoder HT12E is capable of encoding information comprising 12 bits in total; 8 address bits and 4 data bits. That means you need ht12dd inexpensive multimeter to do this. Be the first to write a review. I have experimented further with this, connecting LEDs to the HT12D decoder data pins to ensure the transmitted and received data is presented correctly.

Add decoupling caps close to ht112d IC. Thanks a lot for helping us to maintain competitive prices.

HT12E/ HT12D Encoder and Decoder RF Boards – Buy online in India |

The Decoder receive the serial address and data hf12e its corresponding decoder, transmitted by a carrier using an RF transmission medium and gives output to the output pins after processing the data. This ICs are paired with each other. Actual product may vary from the product photograph displayed above. Home Questions Tags Users Unanswered. Keep IC’s close toegether and imagine that it is a printed circtuit board layout. Sign up using Facebook.