Hello,
I have a stacked setup with the NB1500 Board that is supplied by a 5V DC with max. 400mA. On top I've put the MKR 485 Modbus Shield with the SD Shield.
The "on" LED is bright green and working
I dont know what the issue is, because via USB (Phone charger) the code runs (& the MKR 485 Shield reads from the sensor), but with the VIN/GND power supply it doesnt.
I have tested the NB1500 alone and it works with the VIN power supply.
I am kinda clueless because I've testes all possible wirings, the sensor is seperately connected to the battery and not with the MKR 485 Shield