Check the baud speed on the serial monitor, i bet it is set at something other than 9600
As for the video, looks good to me.
The Chronos system runs with a default program, and you modify it to what you want. In the past it was hard coded in, so
DEL = 0
INT = 5 seconds
BULB = 0
Shot = 360
DIST = (95% of distance of the rail)
RAMP = 0
RVS = 0
SO when you move to a new mode, it will briefly display the mode you are in, then it will display the current value that is programmed in. So if you have 360 shots set as a default, when you move to SHOT it will display SHOT then 360.
Later, i decided I wanted a way make perm changes to the default which would survive a reset, these have to be programmed in the EEPROM.
So first you need to set the defaults.
GO to POS
Press <- and SET at the same time.
THen press -> about 10-12 times, you are looking for DFLT. It will tell you to press RES to cancel, then count down 5, 4, 3, 2, 1. Once it is finished press RES.
That will give it a factory reset with the default values. Then if you move to SHOT, it will display 360.
Now when you move to INT, it should display INT for a moment then show 00.05, Dist will show DIST, then 360. If you adjust the Adjust KNob to 600, then press set, if you move out of DIST then back to DIST, it should flash DIST then 600 so you can see what is programmed in. If you want to make a perm change to that value, move it to what you want (for example 600) and press and HOLD the SET button for 6-7 seconds, you will see "SET" shift from the right side to the left side. THat means it has burned that new value in permanently. So if you pull the power, and plug it back in, it no longer should shot 360, it should show 600
DEL, INT, SHOT, BULB, DIST can all be permanently changed that method.
Also, there is a antibacklash compensation, if you find your system has any backlash move the MODE dial to DIST and press < and > to change the number. That number is the number of steps the system will take before it starts the routine, this is in case you are using a belt drive and find it has a little bit of backlash. Setting the defaults SHOULD set that to zero.
Once you run the defaults the controller should work like a champ. However you will need some time setting up the rest of the default values to match what you are looking for.