Not sure if this is the correct sub to ask but I am building a timer based obstacle course and need someone to recommend the best wireless protocol for the job.
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There will be one button at the start and another at the end.
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There will also be a raspberry pi to receive data from the buttons.
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When the first button is pressed, it will send data to start a timer on the pi.
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When the next button is pressed, it will stop the timer on the pi.
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The pi will then upload the time to a database.
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The buttons can range 15m to 50m from the pi
Which wireless technology would be good for hooking up the button to send data?
I would use wifi for the buttons with an esp32, however I found out that wifi kills battery life meaning the buttons would barely last for over a day.
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