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you can also use it as an altimeter with ±1 meter accuracy
college students
2 mm to 15 mm
For a smaller
can calculate the distance
Wemos D1 Lithium Battery Shield Module color sensor you can also use itThe WeMos lithium battery shield provides a means of powering your WeMos mini, or WeMos mini Pro (see item HCWEMO0002) from a single cell (3. 7V) lithium battery. The shield contains a DC DC converter to step up the batteries 3. 7V to 5V supplying your WeMos mini and shields with up to 1A of power. When the battery is depleted simply plug the shield into a USB power source using a mini USB cable and it will automatically recharge the battery. Two LEDs