2 new ports show up when I plug in my RedBoard

HI totally new to anything Arduino, I’m trying this out because I wanted to use the SparkFun Power Delivery Board - USB-C (Qwiic) for a project. I thought it would be an easy way to get the power I need, but I am having all kinds of problems. So let’s start from the beginning.

problem one, when I pulg in the Redboard I got to go with my power delivery board 2 new ports show up under the tools tab in the Arduino ide, /dev/cu.usbserial1420 and /dev/cu.wchusbserial1420. only the wchusbserial one seems to do anything.

-I am using a MacBook Pro running 10.14.6 Mojave

  • it only has USBC so I am using a USB-C to USB dongle to connect to the USB to USB mini cable that I got with my board

-I installed CH340 drivers using the tutorial

Problem two, things work but don’t work. when I try to run the example program blink I can get the light to blink but I also get error messages like, STK500_recv(): the programmer is not responding does not exist or your board is not connected

problem three, Things continue to work but not work. When I connect the SparkFun Power Delivery Board - USB-C (Qwiic) and try to run the example programs I have problems. the first example program is just supposed to read out the board current settings, it does sort of do this, it first read out a couple of lines of nonsense then says it’s connected and tells the settings. but I also get error messages. like

avrdude: stk500_paged_load(): (a) protocol error, expect=0x10, resp=0x43

avrdude: stk500_cmd(): programmer is out of sync

avr_read(): error reading address 0x0000

read operation not supported for memory “flash”

avrdude: failed to read all of flash memory, rc=-2

avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x6e

Problem four, it does not work. when I try and use the code form the tutorial to change the settings on the Power Delivery Board it does not work at all.

I hope someone can help me, and that this is just some really simple problem that I don’t get because I have never done this before.

thanks a bunch

Can you provide a picture of your setup for starters?