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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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. Number 99 entered quits the script.

ClearAll set A ports to ”. Avoid long jumper wires at all costs. Don’t use wire with thick insulation. And the picture of the circuit done: Yah but I agree.

They are capable of Encoding 12 bit of information which consists of N address bits and N data bits. That means you need an inexpensive multimeter to do this. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Tony EE rocketscientist 62k 2 21 I have experimented further with this, connecting LEDs to the HT12D decoder data pins to ensure the transmitted and received data ht1d presented correctly. It would be possible to control literally hundreds of external devices this way. Sign up using Email and Password. 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.


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ElectronicAdventures: Data Encoder/Decoder HT12E/HT12D

Pabitha Pabi 25 June at Try to get thin solid wire 24 AWG I believe. Trigger send trigger pulse. The Decoder receive the serial address and data from its corresponding decoder, transmitted by a hr12d using an RF transmission medium and gives output to the output pins after processing the data.

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The transmission of the data stream can be over an RF link or direct connection using 2-core cable. Guilherme Garcia da Rosa 2 3 7.

RF Remote Based Dc Motor Driver Using HT12E & HT12D

TB Stepper Motor Driver 4. HT12E Encoder circuit The basic circuit arrangements for the encoder: I wondered whether ht12s processors were still available – they are!

All is working now, thanks to all. I have referenced this before in an earlier blog and the direct link is: Found this item with same quality and at a lower price but prefer to buy from robokits.

Did you really need to post that bt12d images without the full URLS, no less?


Be the first to write a review. I’m working on a similar circuit. Photograph just for reference.


Thanks a lot for helping us to maintain competitive prices. Best practice of using the breadboard is to use short solid wire leads and neatly connect flush to the board without large inductive loops. Home Questions Tags Users Unanswered. Use staples for power and ground rails. The outputs from bt12d HT12D decoder can be used to switch connected logic circuitry or other attached devices via suitable interfaces.

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.

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

Return and Refund Policy. Newer Post Older Post Home. 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.

The GPIO pin acting as the trigger function needs connecting via an inverter circuit. 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. Email Required, but never shown.

Post as a guest Name. 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.

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