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megacode

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The Linear remote control solution from the MegaCode series was used in the facility complex I was living for a short while, and I wanted to know how secure it is. Thus I reverse engineered it.

transmitter

In episode #004 I presented how the transmitting part works, and how to clone the radio remote controls.

ACT-34B

The main target is the ACT-34B from the Linear MegaCode series. The ACT-31B is the same as the ACT-34B but with only one button.

internal pictures:

It uses a PIC12C508. The PICkit2 programmer does not support the PIC12C family because it's EPROM based and requires higher voltage. By accidentally reading the code it erased it. But code protection was probably used. This chip can also come as One Time Programmable, and might be factory programmed.

318LIPW1K

The flashable alternative to the ACT-34B is the 318LIPW1K from the Transmitted Solution Monarch series.

internal pictures:

It uses a PIC12F635. The PICkit2 programmer does support the PIC12F family because it's flash based. But code and data protection were.

receiver

In episode #005 I presented how the receiving part works, so to record codes and analyze them.

MDR

The main target is the MDR from the Linear MegaCode series.

internal pictures:

It uses a PIC12C54A. The PICkit2 programmer does not support the PIC16C family because it's EPROM based and requires higher voltage. But code protection is probably used. This chip can also come as One Time Programmable, and might be factory programmed.

MDR-U

The main target is the MDR-U from the Linear MegaCode series.

internal pictures:

It uses a PIC12C54A. The PICkit2 programmer does not support the PIC16C family because it's EPROM based and requires higher voltage. But code protection is probably used. This chip can also come as One Time Programmable, and might be factory programmed.

megacode.1419794623.txt.gz · Last modified: 2024/01/07 17:49 (external edit)