Thank you Felix, I solved my problem, it was clearly an internal pullup detail: esp_sleep_enable_ext0_wakeup(GPIO_NUM_37,0);//Configure GPIO37 as ext0 wake up source for low logic level gpio_pullup_en(GPIO_NUM_37);

I made custom block for uiflow for do this. But i implemented use only one sensor per gpio pin without checking crc errors (shorter and simplicity code). https://github.com/stonatm/UiFlow-custom-blocks/tree/master/ds18b20 and here is python code used in this custom block: https://github.com/stonatm/M5Atom_matrix_library/blob/master/lib/dallas.py Try connect sensor to SDA pin in groove port, but you must find a number of gpio pin assigned for this line. You also should connect a pullup resistor (2-10kohm) betwen sensor DQ pin and sensor Vcc. In my case i use ds18b20 without this resistor, but my connection to sensor is shorter than 10cm.