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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Post as a guest Name. I see you do not have jumpers to join each side of the power rails.

Full Name Email Address. Buy 15 or more pieces to get Free Hr12d Option Availability: TB Stepper Motor Driver 4. Be the first to write a review. Customers who bought this product also purchased I have experimented further with this, connecting LEDs to the HT12D decoder data pins to ensure the transmitted and received data is presented correctly.


The gt12e 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.

Number 99 entered quits the script. Note there is a gap on both sides down the middle for the Blue and Red outer rails.

The GPIO pin acting as the trigger function needs connecting via an inverter circuit. 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.


I have referenced this before in an earlier blog and the direct link is: Yah but I agree. Keep IC’s close toegether and imagine that it is a printed circtuit board layout.

ElectronicAdventures: Data Encoder/Decoder HT12E/HT12D

Don’t use wire with thick insulation. The transmission of the data stream can be over an RF link or direct connection using 2-core cable. Thanks a lot for helping us to maintain competitive prices.

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. Did you hht12d need to post that many images without the full URLS, no less? 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.

HT12E Encoder circuit The basic circuit arrangements for the encoder: This ICs are paired with each other.

RF Remote Based Dc Motor Driver Using HT12E & HT12D

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. Sign up or log in Sign up using Google. Mercury ball tilt switch 5mm dia.

Photograph just for reference. We will lauch an immediate investigation and try our best to beat the price, if it proves to be the same product. 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.


Avoid long jumper wires at all costs.

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

Easy to Use, Versatile Robotics Kits I’ve never tried this before but looks ok. 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.

Actual product may vary from the product photograph displayed above. The encoder HT12E is capable of encoding information comprising 12 bits in total; 8 address bits and 4 data bits.

I wondered whether these processors were still available – they are! Posted by Nigel Cleaver ht12 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.