MC145026 and MC145027 Control Relay Control

This remote control was made for use in the assembly of the remote travel lift. It can be used on almost anything, as the output of the receiver is not decoded via 4 relays. The core of all remote control circuits for the remote control MC145026 (transmitter) and MC145027 (receiver). Information transfer prevented the SAW433-TX and RX-BC-NBK433 modules, which were factory installed and worked reliably on the first connection. They have a range of up to 1 kilometer in open space (claimed to be 2 kilometers using a directional antenna).

The remote control is designed with 4 channels, press the buttons more at the same time, the output relays are only when the button transmission is pressed.
Remote control office, I tested it in an apartment block, but if I sharply convey the scope, but nepohyboval, to reduce the impact of reinforced concrete structures, the total work is reliable.

Donor Position: Participation is quite simple. Pretty much everything about the old MC145026 encoder and transmitter module TX-SAW433. The rest is a nearly zero (about 300nA) battery collection when any button is pressed to bring up the IO log entry. 0 enables broadcast.

At the same time, D5 LED lighting and power supply are connected to transmitter TX1 (via T1) by pressing. Parts R1, R2, C6 set the frequency RC oscillator. The short-circuit bar is set as the Jumperama address (must be the same as the receiver). The environment is MC145026 triple encoder, thus providing address input to L or H or nezapojit => 243 possible address combinations

Build: I placed the Transmitter I in the U-KP20 boxes. The field connection is přišroubován to the 4 protrusions inside the box (it is necessary to provide a distance of 3 mm). Required in advance to drill holes for buttons and LEDs. Although the box is designed for the 9th battery, vtěsnat I can prototype 2 AA batteries, so there is tužkové housing. Otherwise, it is preferable to use AAA battery type.

To attach the antenna, I used the inside of the terminal rozkuchané (a hole cube and šroubkem), which I připájel for plošňáku. This is particularly convenient for experimenting with the length of the antenna, while also facilitating replacement. Most parts are SMD, so we recommend using the micropájku špičatý tip.

Source: paja-trb.unas.cz MC145026 and MC145027 Control Relay Control alternative link: