Converting an oldfashioned analog sounder into a sounder which stores the waterdepth together with its position on a SD card. It can be used from a SUP board or swimming/ wading in water deeper then 45 cm.
2026 08 08 Modified Depthsounder Survey.pdf (8.3 MB)
A nice project to combine your Arduino fiddling with the great outdoors!
Enjoy.Jeroen Droogh