The WEMOS METER SHELD uses a sonar sensor HC-SR04 and measures the distances of an object. The distance value can be read on an OLED display with a diagonal of 0.49 "and a resolution of 64x32 pixels connected via I2C protocol
For more information see [https://www.adrirobot.it/wemos_d1-mini_meter_shield/](https://www.adrirobot.it/wemos_d1-mini_meter_shield/)<br>
## UltraSonic Distance Measurement ##
## Small low-cost ultrasonic distance measurement modules ##
Small low-cost ultrasonic distance measurement modules like this: SRF-06 are an effective way to sense the presence of nearby objects and the distance to them. Often Robots use these to sense objects or collisions and take appropriate action.
Here's how these modules work:
They have two t...
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