Search Results for "signal detector"
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Showing 2 open source projects for "signal detector"
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1
Metal detector based on RP2040
Pulse induction metal detector using Raspberry Pi Pico board ( RP2040)
...The mode this signal decay depends of target characteristics ( form, type, material ) and the distance. This is the signal we need to analyze, so it is supressed by two antiparallel diodes and passed to an operational amplifier . After amplification, the analog signal is read by one of analog input of Raspberry Pi Pico board and is analized by the software. -
2
Proxminimal
Proximity sensor using commodity IR receiver
By leveraging a microcontroller RS232 port as both a modulation source and detector, it is possible to make a simple proximity or through beam type sensor for very little cost. A special bit pattern is used to eliminate any DC component in the RS232 signal making it compatible with the IR receiver.
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