Hi,
Do I understand it correctly that I would need to get source code and recompile it myself on my Linux to activate sonar options? Or is there a precompiled firmware somewhere that has it active, to save time?
Also, have anybody tried to use those hc-sr04/cjmcu-891 combo sonars that sell like mushrooms on Ebay with 3.3 code version?
Does it work reliably enough to waste any time on it?
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