So I have been working trying to measure the velocity of a string attaches using Rfduino microcontroller. I have downloaded all the library(based on https://www.youtube.com/watch?v=K0JiPQnrkHQ) and check the PCB all the connection via multimeter ( i have made the PCB, and assemble via Chineses manufacture). and connect PCB to my laptop via FTDI board as this;
When I compile the code it. It's compiled nicely. But when I try to download the code it says
RFduino device required for RFduino hex file
Does anyone had any experience with this sort of error message? (this is my first question in this forum. I don't no this belong to hardware or software side)
EDIT: I'm trying to program RFD22302 micro using RFD22121 USB shield and USB MicroB Plug Breakout board.
any help would be appreciated! Thanks, Heaps!