Issue Calibrating - "Pull chain tight and measure" doesn't stop pulling

[WoodCutter4]

@JohnC - If unsure, you can download @Joshua 's master repos here:

How To: Holey Triangular Calibration (GroundControl and Firmware)

In order to run Holey Triangular Calibration at this point in time, which I hope to improve in the near future, you must install the source code for GroundControl as listed on the GitHub instructions. FYI - I updated the instructions and added a couple of steps/install packages that are required. Without the added steps I could not run the stock GC v1.26 or the forked Holey GC. After installing Python and its dependencies, the current fork (unofficial test version) of Holey GroundControl and Ho…