5 ms·

This may be a dumb question, but isn't this more of a "movement detection counter" rather than a "people counter"? Nothing sets apart an animal vs a human trigg

• sc00ter 12y ago
  The ultrasonic transducer probably does a pretty good job of warding off animals. Nothing quite like disturbing the wildlife while counting how many people are disturbing the wildlife.
  • mindslight 12y ago
    But arduino. Arduino arduino, arduino. Don't you know it can last five days?!
• matell 12y ago
  hello Alex. thanks for remark, you are right. However my "ultimate" goal is to count people passing a back-country skiing track, so I decided to emphasise the human-counting use case.
  • danpat 12y ago
    I'd look seriously at the TRAFx counters I referred to in my other comment. They'll do exactly what you want, they're used to count backcountry skiers by quite a few organizations, they work great in winter down to at least -40C. There are some non-trivial design problems that need to be overcome in outdoor environments. The ultrasonic sensor may not be a good choice for winter counting, frost buildup on the sensor surface will likely greatly affect performance, plus it's a bit of a power hog. Don't forget that battery capacity/max current can be greatly affected by cold temperatures as well.