In my case, the module connections are accurate, and the sensor is detecting output correctly up to two feet’s, after that, there’s no detection or functioning properly—what could be the causes? Module coverage issue not identified according to datasheet specifications. I am using ESP32 module.
Many modules meet “datasheet range” only at their rated VDD. Measure VDD at the module while ranging far targets.The device power supply must be provided through the VDD line, a power supply decoupling capacitor (100 nF) must be placed as near as possible to the supply pins of device (VDD). Depending on the application, an additional capacitor of 1 µF could be placed on the VDD line to avoid power noise on VDD.
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