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Hello, I a beginner gobot & raspberry pi.
Now I use [examples/raspi_grove_pi_ultrasonic.go](https://github.com/hybridgroup/gobot/blob/release/examples/raspi_grove_pi_ultrasonic.go) to check with Ra…
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On HC-SR04 connections:
http://www.14core.com/wiring-esp8266-nodemcu-with-hcsr04-ultrasonic-sensor/
https://tinker.yeoman.com.au/2016/01/15/esp8266-smart-shelf-part-2-nodemcu-arduino-ide/
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Verify and optimize code for HC-SR04 module. Precision currently off about +/- 3 cm.
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I fell into the same trap as you seem to have with the I/O version of this sensor. Thought it was faulty until I found your comments that only the i2c version works (with modified code). I couldn't …
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I am testing a small script where two .wav files are played depending on the readings from an HC-SR04. I am running this script on a feather M4 Express with a Prop-Maker for audio.
In Example 1, I …
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Hi I'm getting the following error running this, initially it was working but suddenly I started to get the following error
```
-SR04.o lib/HC-SR04/src/HC-SR04.cpp
lib/HC-SR04/src/HC-SR04.cpp: In m…
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### Board
[SparkFun Qwiic Ultrasonic Distance Sensor - HC-SR04](https://www.sparkfun.com/products/17777)
### Notes
[Driver](https://github.com/sparkfun/Qwiic_Ultrasonic_Py)
* For XBee/Digi
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```
hello 8) , i just wanna do a simple rangrefinder with a hc-sr04 and a tiny oled
128x64_i2c but no sucess ....
i try to combine 2 sketchs, 1 for the ultrasonic sensor and 1 for the screen.
So on …