We all hate the coin cells used in cheap calipers. They are outdated and always run out when you need them the most. The problem actually is not with the batteries but the calipers itself as they only turn the screen off when the OFF button is pressed so a normal switch would also solve the problem but why not take it a step above and solve the problem of changing batteries once and for all.
I'm using a voltage divider to drop the voltage from 3.7v to 1.5v assuming the current consumption is very less would love to know if there is a better way than this.
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