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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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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.

The encoder HT12E is capable of encoding information comprising 12 bits in total; 8 address bits and 4 data bits. The outputs from the HT12D decoder can be used to switch connected logic circuitry or other attached devices via suitable interfaces. Tony EE rocketscientist 62k 2 21 Easy Interface with and RF or an Infrared transmission medium. I have referenced this before in an earlier blog and the direct link is: Newer Post Older Post Home. HT12E Encoder circuit The basic circuit arrangements for the encoder: We will notify you the result by email.

Yah but I agree.

Number 99 entered quits the script. Mercury ball tilt switch 5mm dia.

I wondered whether these processors were still available – they are! TB Stepper Motor Driver 4.


The transmission of the data stream can be over an RF link or direct connection using 2-core cable. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Don’t use wire with thick insulation.

RF Remote Based Dc Motor Driver Using HT12E & HT12D

Use staples for power and ground rails. This ICs are paired with each other. Pabitha Pabi 25 June at 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. Found this item with same quality and at a lower price ht112d prefer to buy from robokits.

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

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

Sign up using Facebook. 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. I see you do not have jumpers to join each side of the power rails. It would be possible to control hh12e hundreds of external devices this way.

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Add decoupling caps close to the IC. And the picture of the circuit done: All is working now, thanks to all. They are capable of Encoding 12 bit of information which consists of N address bits and N data bits.

Return and Refund Policy. By clicking “Post Your Answer”, you acknowledge that jt12d have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is hy12e to these policies. I’ve never tried this before but looks ok. Ht12 Required, but never shown.


Actual product may vary from the product photograph displayed above.

Home Questions Tags Users Unanswered. 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.

Note there is ht12c gap on both sides down the middle for the Blue and Red outer rails.

ElectronicAdventures: Data Encoder/Decoder HT12E/HT12D

Sign up using Email and Password. Please submit the url of the better price you saw. Try to get thin solid wire 24 AWG I believe. That means you ht12ee an inexpensive multimeter to do this. I have included a simple Python3 script below, which prompts the user to enter a number between 0 and 15, and using Binary Coded Decimal, sets the AD8 – AD11 pins to convey the user entered number correctly.

Trigger send trigger pulse. So, you are saying, when you grounded all the pins on the left of HT12D and 12E, it worked?

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. Did you really need to post that many images without the full URLS, no ut12e We will lauch an immediate investigation and try our jt12e to beat the price, if it proves to be the same product.

Keep IC’s close toegether and imagine that it is a printed circtuit board layout.