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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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.

Home Questions Tags Users Unanswered. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Customers who bought this product also purchased Note there is a gap on both sides down the middle for the Blue and Red outer rails. Found this item with same quality and at a lower price but prefer to buy from robokits. I have referenced this before in an earlier blog and the direct link is: Return and Refund Policy.

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. Mercury ball tilt switch 5mm dia.

HT12E, HT12D RF board

Email Required, but never shown. Thanks a lot for helping us to maintain competitive prices. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Keep IC’s close toegether and imagine that it is a printed circtuit board layout. I also thought it would be a great opportunity to fully investigate the operation of the two processors to help me better understand how I might use these in the future.


We will notify you the result ht12s email. I have included a simple Python3 script below, which prompts the user to enter a number between 0 and 15, ut12e using Binary Coded Decimal, sets the AD8 – AD11 pins to convey the user entered number correctly.

Full Name Email Address. This ICs are paired with each other.

Best practice of using the breadboard is ht12x use short solid wire leads and neatly connect flush to the board without large inductive loops. 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.

Using the Raspberry Pi to control.

ElectronicAdventures: Data Encoder/Decoder HT12E/HT12D

Post as a guest Name. HT12E Encoder circuit The basic circuit arrangements for the encoder: Trigger send trigger pulse. Easy Nt12e with and RF or an Infrared transmission medium. So, you are saying, when you grounded all the pins on the left of HT12D and 12E, it worked?


Don’t use wire with thick insulation. Avoid long jumper wires at all costs.

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

ClearAll set A ports to ”. Buy 15 or more pieces to get Free Shipping Option Availability: Yah but I agree. I haven’t drawn any circuits for this as the interfacing is straight forward as both the Raspberry Htt12d and the HT12E operate at 3. The transmission of the data stream can be over an RF link or direct connection using 2-core cable. Tony EE rocketscientist 62k 2 21 Sign up using Facebook. I’ve never tried this before but looks ok. It would be possible to control literally hundreds of external devices this way.

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.

I see you do not have jumpers to join each side of the power rails. Posted by Nigel Cleaver ht12x They are capable of Encoding 12 bit of information which consists of Jt12d address bits and N data bits.

Be the first to write a review. Try to get thin solid wire 24 AWG I believe. And the picture of the circuit done: The Decoder receive the serial address and data from its corresponding decoder, transmitted by a carrier using an RF transmission medium and gives output to the output pins after processing the data.