DFR0553 ADS1115 Disconnected
Using the downloaded demo on an Arduino Uno, it says disconnected, but that's because the address switch appears to be labelled the wrong way round on the silk screen.
2024-12-02 23:30:02
Can you upload an I2C scanner to verify this? If the I2C scanner does confirm that the silkscreen is in the wrong direction, you can find the seller for after-sales service.
You could find the I2C scanner in this URL:
https://wiki.dfrobot.com/_SKU_DFR1185_Fermion_I2C_Address_Shifter#target_7
Yeez_B