Hi Bluerobots ! I need to add a cheap sonar like a a02 sensor to have a distance data. The idea would be to then use this data to keep a distance from the bottom. This sensor works with RS485, I think it’s possible as other modules also work in rs485. The controller used is a Pixhawk 2.4.8. Is i…

Although it is said to be “waterproof,” will that thing actually work underwater, or is it actually intended to work in air?

Hi @Alex_TryTT - I agree with Larry - that sensors IP67 rating suggests that while it may be splash-proof, it is not a sensor that is intended for underwater range finding. That said, if yo u’re able to make it work without filling with water, and by adjusting it’s assumption of sound speed in the…

Many Thank’s for your responses @ljlukis it’s intented to work underwater, It’s to try <a href="https://fr.aliexpress.com/item/1005005292434664.html?spm=a2g0o.detail.pcDetailTopMoreOtherSeller.3.10feFCS3FCS3ta&gps-id=pcDetailTopMoreOtherSeller&scm=1007.40050.354490.0&scm_id=1007.40050.354490.0&scm-url=1007.40050.354490.0&pvid=ad78d1a7-812e-4e25-9802-33b9d9cb9aa6&_t=gps-id:pcDetailTopMoreOtherSeller,scm-url:1007.40050.354490.0,pvid:ad78d1a7-812e-4e25-9802-33b9d9cb9aa6,tpp_buckets:668%232846%238115%232000&pdp_npi=4%40dis%21EUR%2137.16%2131.59%21%21%2137.80%2132.13%21%40210390c217377538065085334eb056%2112000032516904576%21rec%21FR%21913100604%21XZ&utparam-url=scene%3ApcDetailTopMoreOtherSeller%7Cquery_from%3A" rel="noopener nofollow ugc">this model , sorry I don’t have reference when I write 1 first message, but it looking it’s the same . @tony-white I will try first with an arduino to see what are the range and the limits, but’s it’s an idea. i…

Rs485 communication with a cheap sonar

Third Party Products Sonar and Acoustics

tony-white (Tony White) January 24, 2025, 10:02pm 5

Hi @Alex_TryTT -
The guide linked previously may be helpful to you, as others have found!

1 Like

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Rs485 communication with a cheap sonar

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Rs485 communication with a cheap sonar

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