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| River water level |
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| Neomys Sapiens:
Those people seem to know a lot about it, especially metering of flow in open, irregularely shaped channels: https://www.usbr.gov/tsc/techreferences/mands/wmm/index.htm |
| Stray Electron:
You might want to read this also. http://www.itrc.org/reports/pdf/sensorsummary.pdf |
| B J:
Thanks for all the feedback you've sent. – I have been experimenting with the Wingoneer and just not satisfied with it. The echo time pulse output seems to get confused very easily and is not consistent. It does a good job of putting out the pulse, but I am now looking at making my own receiver. I have a Murato MA40A35 which does a fair job of picking up the echo. On the shorter distances, great, but on the longer distance, not quite. The signal is down in the noise too far. This device is peaked at 50 KC so my question is, can it be tuned to a lower frequency? ( 40 KC ) Any one try this? --- How about another mic that is peaked at 40KC? I want to stay away from the large expensive microphones. Anybody know anything about the SiSonic Spu0410LR5H-QB ? Looks good on paper but have not had a chance to check it out. --- At this time I am just working on getting the data. Once I have it I will see about getting it up out of the canyon to the shop. There are several workable ways to do this, I hope. |
| mkschreder:
Not wifi, but LoRa may be what you are looking for. Sent from my SM-G960F using Tapatalk |
| MarkF:
Here is a nice comparison of RF modules. |
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