Can you give us the datasheet of your metal detector?

I saw one of those built a while back. It was cool. The guy threw some pennies in the sand at the beach and the metal detect went all over the place and stopped at the penny and turned an alarm on. Maybe you will find some pot of gold. You might look on Youtube. I don't remember where I saw it.

It can definately be done.

:)

In my opinion, you can connect about any sensor to about any microcontroller including the EZ-Robot the caveat is how hard or easy it is do so.

Several years ago I added a metal detector to one of my Basic Stamp II controlled robots. I bought a cheap $19.99 metal detector from Toys-R-Us (I think). It had no settings, it simply produced beeping from a speaker when metal was detected. What I did was interface the micro controller to the speaker output (2 wires, one for ground and 1 to the signal input via a 1K resistor) of the metal detector. When a tone was sent for metal being detected the microcontroller picked it up.

They do offer a metal detecting robot kit for $23 The chassis looks like crap, but the detection unit looks interesting and would save you from hacking a traditional unit.

http://www.onlinesciencemall.com/4m-remote-control-metal-detector-robot-kit-mechanics-science-project.html?gclid=CNjRhYDXy7kCFchaMgodxjAAFg

When connecting a device like this to the EZ-robot check the output via a millimeter to make sure the voltage does not exceed 5 volts. Then connect it to a digital port and set the ARC by selecting a digital input on/off. The detector senses metal the ARC software should sense that as on ON or high signal. No metal, that's OFF or low signal.

Use an analogue 0-5v sensor and it'll work with the EZ-B.

Use a script to monitor the detector and act upon detection.

It should be very simple to do.

$metaldetector = GetADC(ADC0)
IF($metaldetector > 200)
  #Do something if detected
  Print("Metal Detected")
EndIf

Use that, or something similar as part of a roaming/movement script much like the ping roam script uses the ultra sonic sensor.

@edison2 - I don't have any datasheet of metal detector yet, I'm still planning to have one

@MovieMaker- Yes, there's a lot on youtube but as far as I know it is connected from different microcontroller

@JustinRatliff- Thank you, it's a great help. Maybe I'll just configure on how I will connect the metal detector to the EZ-robot

@Rich- Thank you thank you! I have now an idea on how to connect or have a metal detector on EZ-robot

Thank you guys!