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Arduino OLED Tacho BR2J

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  • #16
    Originally posted by rowbare View Post
    Allegro has a gear tooth sensor:

    https://www.allegromicro.com/en/Prod...Cs/ATS667.aspx

    You can get them on eBay for about USD $7.

    bob
    Thanks Bob, just ordered one to try £3.83 UKP, as it's Hall effect it wonder if it would work in place of the "standard" magnet and pickup layout of the far eastern LED counters?

    Paul

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    • #17
      There is a small magnetic pellet embedded in the case so there is no need for an external magnet. It reacts to gear teeth as long as they are ferro magnetic.

      This talks about a different model but the principle is the same:
      https://www.eletimes.com/gear-tooth-...crosystems-llc

      bob

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