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Topic: Controlling Robot Using cellphone (Read 4 times) previous topic - next topic

jraskell


hi,
Wireless-controlled robots use rf circuits, which have the drawbacks of limited working range, limited frequency range and the limited control.
               Use of a mobile phone for robotic control can overcome these limitations.
It provides the advantage of robust control, working range as large as the coverage area of the service provider.
How can i connect mobile to arduino board??


I wouldn't necessarily agree with that statement.  Control of any robot will ultimately require some feedback.  Direct Visual feedback is the best possible method.  Short of that, real time video feed.  After that, various levels of telemetry and environmental data feeds.

The project you linked to is a perfect example.  What does it matter if the phones allow you to control the robot from miles away if you have no means of feedback once it's out of your sight.  How do you control something if you don't know where it is and what's around it?

It makes for an interesting/cool demonstration, but without any sort of feedback, it has no practical applications at all.

grimreaper

#11
Aug 11, 2012, 10:27 am Last Edit: Aug 11, 2012, 10:32 am by grimreaper Reason: 1
You would need a dtmf decoder ic. It actually converts the different frequencies that is produced in the key strokes to a digital signal. You could use these digital signals as input to your microcontroller. Connect your dtmf ic to the mobile in your robot, take the digital outs from the dtmf ic to the arduino.

grimreaper

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The project you linked to is a perfect example.  What does it matter if the phones allow you to control the robot from miles away if you have no means of feedback once it's out of your sight.  How do you control something if you don't know where it is and what's around it?


If the phone in the robot has a camera, you could place a video call to the phone, so you'll be getting a visual feedback. So I'm pretty sure you control it miles away, provided, there is cell phone coverage.

Andy R

Can you just connect the arduino to the cell phone's audio jack, like when listening to a phone call with ear plugs? The Arduino would have to decode the frequencies of the tones.

While decoding a phone call's tones is cool, you could just write an app for your phone that connects over the internet to your server or the Arduino could connect directly with the server (over bluetooth or wifi.) This is pretty normal stuff.

dxw00d

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Can you just connect the arduino to the cell phone's audio jack, like when listening to a phone call with ear plugs?

As long as the negative half of the signal doesn't reach the Arduino.

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