Ultrasonic Distance sensor - Error

[olimexsmart]

For anyone stumbling upon this (like I did), I solved it this way:

Waterproof ultrasonic distance sensors, jsn_sr04t, aj_sr04m or sr04m-2?

[20250126_173240] [20250126_173253] This sensor I bought from a chinese site made me loose about a day of work to get it up and running. At first glance it could be attributed to wrong documentation, this page in particular: https://esphome.io/components/sensor/jsn_sr04t but I actually think that at the time of writing this particular board was not yet around, and then the chinese made a mess with the naming. TLDR: this board (SR04M-2) has to be configured as a JSN-SR04T, from the resistor …