How to control my ROBOT using remote?

Projects General Guidance
1

I have designed a robot with 4 wheels. Each 2 wheels are connected with L298N and L298N is connected with Arduino Mega. I hope everyone is familiar with L298N, it is H-bridge, used to control the two wheels.

Now I want to control them using a remote? I have never done this, so can anyone help me with this? How can I do it? Do I need to buy any module?

Once I control the wheels with remote, I would use this remote to control the robotic arm as well.

Thank you.

2

Gonna give you some links:

  1. http://www.instructables.com/id/The-Easiest-Way-to-Use-Any-IR-Remote-with-Ardiuno/?ALLSTEPS

  2. http://vaaiibhav.me/how-to-use-arduino-with-infrared-remote-control/

  3. https://arduino-info.wikispaces.com/IR-RemoteControl

I'ts up to you if you want to buy some modules or just use a random remote control read each button
with a IR Receiver and program each button to do your task.

You can buy this 3pin IR Receiver cost about 0.10c $

find a arduino library that can read the IR remote and your done. Hope you know what to do next.

D.60

3

You could also control your Robot by using another Arduino to send it data wirelessly using a pair of nRF24L01+ 2.4GHz transceivers.

The pair of programs in this link are derived from programs I use for controlling model trains.

...R

4

Thanks for the response @Robin & @Domino!

One question, does Infrared receivers have ability to work on long distance? I want to use my robot with RF remote from atleast 50-100m? Do you think they will appropiate?

5

I doubt if IR would be effective at those distances. It is usually used indoors.

The nRF24s should work over that distance outdoors with no obstructions. You can also get high-power versions with external antennas for longer range.

I tested my nRF24s (with the PCB antenna) outdoors recently and they were still working at 110m range. I could not try a longer range because I could not see if the motor was rotating.

...R

6

I will agree with Robin2 the IR works maximum at 10~15 meters I know that because as a kid in my
neighborhood we took universal remotes and we start changing channels in people houses or shops :smiley:
and you need always to point the IR in your robot direction.

if you want bigger range a nRF24L01 pcb antenna will do the job, btw Robin2 I tested the nRF24.. PCB antenna
and the maximum range I got was 140 meters.

Btw OP remember if you want to control your robot between obstacles, big range like 15+ meters I would suggest you the nRF24 PA with the 2db antenna, the small nRF24 doesn't like obstacles in big ranges, even a human in between can cut the signal, I tested that.

So if you want:

5~10meters = IR remote.
10~140meters = nRF24L01 (no obstacles in big ranges)
140~1000meters = nRF24L01 PA 2db antenna

You chose :slight_smile:

D.60

7

Thanks guys once again for explaining me. As I mentioned above, I never controlled anything wirelessly via a remote. So can you tell me how I can integrate "nRF24L01" & "nRF24L01 PA 2db antenna" with my arduino project? How will I be able to design a remote with them which controls the movement of my robot? Kindly let me know.

Sorry for asking so many questions.. :frowning:

8

zoma786:
So can you tell me how I can integrate "nRF24L01" & "nRF24L01 PA 2db antenna" with my arduino project?

Have you studied the code in the link I gave you in Reply #2. You will see that it the master sends data to the slave and the slave sends data back. What the data represents is up to you :slight_smile: IIRC the examples just send 2 integers (4 bytes altogether) in each direction. The nRF24 can send up to 32 bytes in each message - which is probably more than you will need.

...R