Macchina A0 OBD-II Development Module DEV-17493 does not connectvia USB/Serial

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1

Macchina A0 OBD-II Development Module DEV-17493 does not connect via USB/Serial.

I have tried two different A0 devices with three different usb cables. (a different microcontroller shows a USB Serial port with all cables)

Neither of them can connect to my computer using USB. The devices get power, led briefly flashes red, then remains a steady green.

The following all had the same results (no COM port identified in Arduino IDE):

  1. Pressing the reset button does not affect connecting to the computer.
  2. Pressing the reset button whle connecting to the computer.
  3. Three different UBS cables.

I read these docs (And forums), but no guidance on this issue:

2

Try different port/PC if possible…it sounds like the port isn’t delivering a full 5v to me

From there it might be better to ask Macchina Common Issues | Macchina Docs

3

This is the first card/device that required a Windows Driver Update; the device manager showed no driver installed. Installing " CP210x Windows Drivers with Serial Enumerator" allowed the A0 to connect.

https://www.silabs.com/documents/public/software/CP210x_Windows_Drivers_with_Serial_Enumeration.zip