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Offline JoopTopic starter
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« on: July 05, 2011, 03:21:01 am »
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Anyone tried using an Arduino board to build a metal detector? Thinking about a pulse-induction type detector, like Andy's Chance detector.

Would be nice as an open source project, with the code to be downloaded and modified to your needs. Maybe even with a custom arduino shield.  Cool

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Offline GoldDigger1950
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« Reply #1 on: July 07, 2011, 02:18:47 pm »
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An Arduino project would be fun since it is readily available and has free development software.

One thing to remember when using a Picaxe, Arduino, Parallax Stamp, ATMega or other device with an interpreter built in is that response time will most likely not be fast enough to repeatably analyze the return signal. You need a fast processor for that to look for the crossover points in the return pulse that indicate a good target. In a PI design, timing is critical to the point of not working if anything is just a bit off.

The best choice among them all is the Picaxe, which uses a compiler to generate the operating program in native machine code. The others have a basic interpreter built in. The only thing built in to the Picaxe chip is the bootloader which interfaces to their compilers.

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« Last Edit: July 07, 2011, 02:21:01 pm by GoldDigger1950 »
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It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
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