MKR Wifi1010 + MKR RS485 Shield (modbus) + 3xNTC thermosensor

Official Hardware MKR Family MKR Shields
1

My project is (MKR board with MKR RS485 shield and temp.sensors) working perfectly from USB contact, BUT NOT working from VIN 5V, board liked livig, but RS485 bus is death, and oled too ! I 20x tested, alltime this situation coming

2

Recommended input to VIN is between 6V and 12V (e.g., a 7.5V or 9V regulated supply).
This ensures proper regulation to all required internal voltages, especially for the shield.

3

Thx., but MKR Wifi1010 VIN input alloved only "Input Voltage (nominal) 5-7V", or?
I do now 7,5V regulated, and it working, but get i no problem from? And when i supplyed via RS485 shields screw input, not working too.

4

MKR RS485 Shield Doc write:
"Power
Operating voltage 3.3V
Vin (screw connector) 7-24V
Vin (header) 5V"

As i give 7,5 volts for MKR board VIN pin, give i automatic RS485 shields (above) VIN pin too, and that like illegal, not?

5

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.