readme writing

readme.md

@@ -13,11 +13,17 @@ To connect to standard readout method, use netcat as follows (assuming the IP ad
 To connect to web interface, point your web browser at (note http, not https):
 * `http://192.168.1.31/`
 
-The code is fully contained in the file `PositionGaugeServer.ino`.
-It depends on only the standard Arduino libraries and the Ethernet library in order to support the Ethernet shield .
-It is tested and deployed with an Arduino Uno and a Ethernet Shield v2, connected to two gauges (model nr?).
-The code can be configured to support a variable number of gauges, network configurations, Arduino pinouts, and update intervals and timeouts by editing the **top** part of `PositionGaugeServer.ino`; the bottom part will reconfigure automatically.
-Note that for any deployment you **must** set the correct MAC address in the code file.
+The code logic and global variable definition is contained in the file `PositionGaugeServer.ino`.
+The configuration which must be changed by the user needs for each deployment is contained in the header file `PostionGaugeServer_config.h`, both in the `PositionGaugeServer` folder, and includes:
+* Ethernet MAC address (**must** be set differently for each deployment)
+* DHCP or fixed IP configuration
+* Refresh intervals
+* Timeouts
+* Number of gauges to connect
+* Pins to use for communication with gauges
+
+The project only depends on the standard Arduino libraries and the Ethernet library in order to support the Ethernet shield .
+It is tested and deployed with an Arduino Uno and a Ethernet Shield v2, connected to two gauges, as shown in the picture below.
 
 The schematic for the connection to the gauge (provided by Roger Cheng) looks like:
 ![Simple schematic](/schematic.png)