Thursday, April 14, 2016

Wireless remote for robot using RF Modules

Making wireless control for robot requires microcontroller knowledge, but here we have presented wireless RF remote control for robot using HT12D and HT12E Encoder decoder IC without using microcontroller.

The circuit is constructed in two parts first part is RF Transmitter i.e. remote control. RF Remote control is based on HT12E Encoder and Switches to control the motor direction forward and reverse. Complete tested pcb layout and circuit is provided here for simplicity. you can use any RF Module 433MHz or 315MHz. Receiver is constructed using HT12D decoder and L293D Motor driver IC This circuit takes 12V as input and motor connections are mentioned on PCB connector. one diode is provided on both Receiver and Transmitter circuit for reverse polarity protection, Remote circuit can be operated using 9V Battery.

Components Required:
1. HT12D/HT12E Pair
2. 433MHz or 315MHz RF Module Pair
3. L293D
4. LM7805 Qty. 2
5. Diode 1N4007
6. Resistor 1K,33K,750K
7. 10uF/16V Capacitor
8. 3mm LED
9. Tectile Switches

Step 1: Circuit Diagram
Remote Circuit (RF Transmitter)
RF Remote control circuit for robot

Receiver Circuit Diagram (RF Receiver with Motor Driver)
RF Remote control circuit for robot

Step 2: PCB Layout
SPI1 and SPI2 Connectors are optional, provided if you want to interface this circuit to microcontroller

Download this pdf pcb layout and develop PCB

Step 3: Testing of final development
these are some photos of developed PCB

RF Wireless Remote for Robot 

After making this circuit I observed that buttons are on one side so I modified the 
layout to make it to have remote control buttons on PCB Edges.

Test you creation for queries comment, for more interesting project click here

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