add more detail

CLAUDE.md

@@ -23,7 +23,10 @@ for the methods of that class should be put into a header file in the
 headers directory.
 
 Another class would be used to communicate with the raspberry pies that
-will obtain data from the ais and ads-b software defined radios. 
+will obtain data from the ais and ads-b software defined radios. This
+is for purposes of adding targets. Marine radar can pick up low flying
+targets plus I may (in the future) add an option for a vintage air traffic
+control radar with precision approach radar, but not now.
 
 Another class would be used for simulating targets, like for example
 a sailboat regatta race.
@@ -38,16 +41,41 @@ The platform is a Geekom GEEKOM A8 Max, AMD Ryzen 9 8945HS 5.2GHz 32GB RAM
 Now here is the overall project and proposed architecture
 
 This project is to simulate a period 1950 to 1960 marine radar with a crt p7
-phosphor for the ppi scope and a p4 phosphor for the a scope. The ppi scope 
+phosphor for the ppi scope and a p1 phosphor (this is oscilloscope phosphor)
+for the a scope. The ppi scope 
 will be on the right side of the screen and the a scope will be on the left
-hand side of the screen. The user will use a knob to set the bearing for the
-a scope as that only shows range.
+hand side of the screen. 
 
-For now, the a scope will not be made full because  I have not figured out
-how to implement the bearing control. Just put the display up on the screen.
+Notes for controls the user can play with
 
-The main ppi scope will take up the right hand side of the screen. You need to leave about
-a 1/2 inch margin around the sides of the circular scope. 
+Here are the controls that I am proposing
+
+1. Intensity
+2. Focus
+3. Astignatism
+4. Range selection (for both a scope and ppi scope)
+5. Sensitivity
+6. Clutter elimination (I believe only ppi scope; please research)
+7. There is some sort of control having to do with the mangatron 
+   but I don't know what its called and what it does.
+8. Bearing (only for a scope) which in the old days uses a servo motor to
+   rotate the antenna. I don't know what form of feedback (text on the
+   screen or mechanical numbers on a dial)
+
+(Please suggest other controls I may have missed.)
+
+Now, for controls, the tentative approach is to use encoders (that do not
+have end stops so they cannot be broken by visitors at the museum) I will
+need help on how to impliment them. I am guessing a few raspberry pies to
+handle the encoders. I am thinking of encoders have one common terminal and
+a clockwise pulse terminal and a counter clockwise pulse terminal.
+
+Let do this like this. The control handling will be a different class and run
+as a separate thread from the display. Each control function will have a parameter
+for how many pulses received and in what direction. That would be permanent. 
+
+Temporary code necessary for changing control selection and value via the
+keyboard until I get the necessary hardware for the controls.
 
 Details for A scope (predecessor to the PPI scope)