February 27, 2021 By admin 0


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 referenced this before in an earlier blog and the direct link is: 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. Use staples for power and ground rails.

Add decoupling caps close to the IC. Mercury ball tilt switch 5mm dia.

ElectronicAdventures: Data Encoder/Decoder HT12E/HT12D

Yah but I agree. Post as a guest Name. Avoid long jumper wires at all costs. I’ve never tried this before but looks ok. Easy Interface with and RF or an Infrared transmission medium.

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. Easy to Use, Versatile Robotics Kits Keep IC’s close toegether and imagine that it is a printed circtuit board layout.


I’m working on a similar circuit. Return and Refund Policy. 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. The GPIO pin acting as the trigger function needs connecting via an inverter circuit.

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

Thanks a lot for helping hh12d to maintain competitive ht122d. ClearAll set A ports to ”. The encoder HT12E is capable of encoding information comprising 12 bits in total; 8 address bits and 4 data bits. That means you need an inexpensive multimeter to do this.

For fun here is a free tool to help design, layout and simulate. 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. Pabitha Pabi 25 June at Full Name Email Address.

Email Required, but never shown. Tony H1t2d rocketscientist 62k 2 21 Note there is a gap on both sides down the middle for the Blue and Red outer rails. We will lauch an immediate investigation and try our best to beat the jt12d, if it proves to be the same product.

Buy 15 or more pieces to get Free Shipping Option Availability: HT12E Encoder circuit The basic circuit arrangements for the encoder: 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 ht12x addresses are the same, that was what I was making wrong, I left them all at 1 and changed ht1e2 resistors in them both cause the TX need to have 20 times the resistence of the receiver, in other words 50k and 1M resistors.


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.

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. Remember I said check power? Try to get thin solid wire 24 AWG I hr12e.

I have experimented further with this, connecting LEDs to the HT12D decoder data pins to ensure the transmitted and received data is presented correctly. Newer Post Older Post Home.

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Number 99 entered quits nt12e script. Sign up using Facebook. So, you are saying, when you grounded all the pins on the left of HT12D and 12E, it worked?