i have (hcsr04) ultrasonic distance module connected arduino. have connected 4 pins of module , working fine, when pull off wire connected ground in arduino, module works totally fine.
how dos module work without connecting ground pin ground?
i have (hcsr04) ultrasonic distance module connected arduino. have connected 4 pins of module , working fine, when pull off wire connected ground in arduino, module works totally fine.
how dos module work without connecting ground pin ground?
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