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. For fun here is a free tool to help design, layout and simulate.

We will lauch an immediate investigation and try our best to beat the price, if it proves to be the same product. Avoid long jumper wires at all costs. Email Required, but never shown. All is working now, thanks to all. Customers who bought this product also purchased Yah but I agree. That means you need an inexpensive multimeter to do this.

ElectronicAdventures: Data Encoder/Decoder HT12E/HT12D

Photograph just for reference. ClearAll set A ports to ”. So, you are saying, when you grounded all the pins on the left of HT12D and 12E, it worked? 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.


Did you really need to post that many images without the full URLS, no less? The outputs from the HT12D decoder can be used to switch connected logic circuitry or other attached devices via suitable interfaces. Mercury ball tilt switch 5mm dia. I’m working on a similar circuit.

Hh12d wondered whether these processors were still available – they are! This ICs are paired with each other. The encoder HT12E is capable of encoding information comprising 12 bits in total; 8 address bits and 4 data bits.

Thanks a lot for helping us to maintain ht12c prices. Found this item with same quality and at a lower price but prefer to buy from robokits.

Sign up using Email and Password. I haven’t drawn any circuits for this as the interfacing is htt12d forward as both the Raspberry Pi and the HT12E operate at 3. Posted by Nigel Cleaver at It would be possible to control literally hundreds of external devices this way. The GPIO pin acting as the trigger function needs connecting via an ht12v circuit. Thanks for all your awnser, after studying a little bit into the RF th12e 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.


Trigger send trigger pulse.

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

Remember I said check power? Sign up using Facebook. I see you do not have jumpers to join each side of the power rails. Tony EE rocketscientist 62k 2 21 With the possibilities ht12c 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. Home Questions Tags Users Unanswered.

I’ve never tried this before but looks ok. 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. Post as a guest Name.

HT12E, HT12D RF board

Buy 15 or more pieces to get Free Shipping Option Availability: HT12E Encoder circuit The basic circuit arrangements for the encoder: Easy Interface with and RF ht1e2 an Infrared transmission medium. The transmission of the data stream can be over an RF link or direct connection using 2-core cable. Try to get thin solid wire 24 AWG I believe.