This is the second part of home automation without using a microcontroller. In the previous part, we designed a remote controller using an RF module. And again, if you do not have an RF module on Proteus, you can download it from this link RF module electronify. In this section, we will connect the necessary home appliance to the receiver side, and the remote part will be left as is. For this demo, we are going to turn on the fan and light only, but you can connect other devices as well. A complete proteus file can be downloaded from this link for home automation without using a microcontroller.
In the updated circuit diagram, two LEDs have been removed, and the corresponding pins are now utilized to activate the relay. When D9 of the transmitter is turned on, the lamp point in the receiver section becomes high. This high signal triggers the transistor, which functions as a switch in this project. Similarly, another pin of the transmitter is employed to activate the fan through appropriate connections. This project’s concept revolves around these configurations. If you have any queries about this project, feel free to ask in the comments, and I’ll do my best to assist you.
A transistor, a type of semiconductor device, serves the dual purpose of conducting and insulating electric current or voltage. It essentially acts as a switch and an amplifier. To put it simply, a transistor is a tiny device used to manage the flow of electronic signals.
The term “transistor” is derived from “transfer” and “resistance” because it transfers resistance from one end of the device to the other, essentially facilitating the transfer of resistance. This fundamental device is built upon the p-n junction, which is also the primary building block of diodes.