Elektor Team
About the article

HT12E Pushbutton Switch Extension

We have already used the Holtek HT12E as an encoder in several previous projects, primarily for remote controls. This encoder is triggered by a Low level on the TE (Transmission Enable) input. The transmitted address (and optionally data) can be set on the A0–A7 and AD8–AD11 inputs, for instance using DIP switches (internal pull-up resistors are present). The trick is now to change the address at the same time by pressing a second button. This is possible if a diode is added to the circuit.
Downloading of this magazine article is reserved for registered users only.
Login | Register now!
Loading comments...