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Multiple One-Wire Touch Detector Circuits on Same Body Without LED Activation

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Best answers LABEL_AI_GENERATED

How can I make multiple body-mounted touch detector circuits so that if the same person touches more than one device at once, none of the LEDs turn on, while separate people can still trigger their own devices independently?

You need a shared control scheme so the touch plates are not independent: when one plate is touched, a relay or a microcontroller can disable the other plates instead of letting every circuit light its LED separately [#21659719] Simply duplicating the one-wire touch detector for each plate will not prevent multiple LEDs from turning on at the same time [#21659717] A microcontroller was suggested as the cleaner, less bulky option for implementing the required logic [#21659719] One reply also suggested adding proximity detection to disable the LED on a watch when another object is detected nearby, but that idea was only proposed as an untested concept [#21659721]
AI summary based on the discussion. May contain errors.
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  • Preventing multiple one-wire touch detectors from false triggering

    #1 21659716
    Viswanath Malepati
    Anonymous  
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  • Recommend replicating the circuit for each touch plate

    #2 21659717
    Joe Wolin
    Anonymous  
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  • Require mutual exclusion across multiple touch devices

    #3 21659718
    Viswanath Malepati
    Anonymous  
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  • #4 21659719
    Khaba Bulu
    Anonymous  
  • Clarifying multi-watch body-contact detection requirement

    #5 21659720
    Viswanath Malepati
    Anonymous  
  • Proximity detector to suppress adjacent watch LEDs

    #6 21659721
    Khaba Bulu
    Anonymous  
  • Proximity detector still fails with multiple watches

    #7 21659722
    Viswanath Malepati
    Anonymous  
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  • Design may need modification for implementation constraints

    #8 21659723
    Khaba Bulu
    Anonymous  
  • #9 21659724
    Viswanath Malepati
    Anonymous  
  • #10 21659725
    Joe Wolin
    Anonymous  

Topic summary

LABEL_AI_GENERATED
The discussion centers on implementing multiple simple one-wire touch detector circuits on the same body without activating any LEDs when more than one device is touched simultaneously by the same person. The original circuit uses a metal plate as a touch sensor to activate an LED. The challenge is to prevent LED activation if multiple such devices are worn on the same body, while allowing normal operation if worn by different individuals. Proposed solutions include replicating the circuit for multiple inputs, using off-the-shelf capacitive touch sensors for improved performance, and employing a relay or microcontroller logic to disable other devices upon one being activated. Another suggestion involves integrating proximity detectors on each device to detect neighboring devices and disable LED activation accordingly. However, this approach has limitations, such as failing to detect devices on different limbs or different people in close proximity. The conversation highlights the complexity of designing a system that discriminates between multiple devices on the same body versus different users, suggesting that a microcontroller-based approach with logical control might be the most feasible solution.
AI summary based on the discussion. May contain errors.
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