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Results tagged with hc-sr04
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user 32827
For questions about the HC-SR04 ultrasonic ranging sensor.
3
votes
Accepted
JSN-SR04T-2.0 with NodeMCU not starts after reset or reconnect usb power
To enable ESP8266 firmware flashing GPIO0 pin must be pulled low
before the device is reset. Conversely, for a normal boot, GPIO0 must
be pulled high or floating.
The D3 pin is equivalent GP …
- 542