I decided to build this project and getting it going was easy with the great directions. My problem as a first time Photon user is why does it not seem to work. I was able to successfully compile and flash. I see with the app the data fields but they make no reliable sense. The Photon connects ju…

Can you share your code (if using Web IDE the easiest is to use the SHARE THIS REVISION button and post the link) and also state how you connected the sensor? That’d make debugging your issue easier :wink:

Thanks for the reply. The code is posted in the “this project” link which links to the blog The connections are just as shown in the posting of the project, except I have commented out the alert section. I can repost the code if needed.

@Condoman , posting a picture of your wiring might be helpful. You can find other posts from other members regarding the SR04 sensor which may be helpful. [image] JSN-SR04 ultrasonic sensor General I have a JSN-SR04 sensor I just purchased that I suspect is bad. Can anyon…

Hi, I’ve played around with the HC-SR04 myself and discovered a bit of an issue with the basic way mine functioned. Using the simple examples I found on the net I would keep gettting randon strange way off the scale results from time to time. It turns out after scopeing the echo pin, if the sensor…

Hi, Update! I’ve just realised the version I shared, was faulty, so I’ve deleted the link… I’ve doing this during my lunch break, so I’ll reshare once I’ve double, doubled checked the version… Liam

peekay123: I looked at many examples of issues with the sensor both in this forum and on the web. Nothing I saw seemed to speak about my issues. [image] Above is how I wired this in accordance with the project I am copying. VideoLiam: I don’t know if the code ventz wrote accommodated the echo …

@Condoman , how long are the wires between the SR04 and the Photon? The original project used pins D0 and D1: Connect an HC-SR04 Range finder as follows: Spark HC-SR04 GND GND 5V VCC D0 Trig D1 Echo You use D1 and D2. Did you change the code accordingly? Why the change of pin…

Nice catch. I had followed the instructable which shows D1 & D2. I see the code comment shows D0 & D1. I will change and report back. The wires are 8".

I am seeing some valid data now. I will reassemble the container and put it back in the tank and report back.

Hi, OK, This is the code I wote to return a much more reliable reading from the HC-SR04, that I got off the net. This actually rejects dud readings and returns 0cm… You can tell its a dud reading if there is a pause in the reading whilst monitoring it on the serial terminal. Hope this is of help …

Basic where to start debugging

Troubleshooting

peekay123 November 2, 2018, 2:30pm 4

@Condoman, posting a picture of your wiring might be helpful. You can find other posts from other members regarding the SR04 sensor which may be helpful.

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Basic where to start debugging

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