diff --git a/Class.md.txt b/Class.md.txt
new file mode 100644
index 0000000..e8ff852
--- /dev/null
+++ b/Class.md.txt
@@ -0,0 +1,13 @@
+Classes:
+
+DebugMSG
+ProdualMIO
+	Fan??
+Menu
+LCD
+Modbus
+Counter
+
+
+ProdualMIO:
+https://www.produal.com/en/mio-12.html
\ No newline at end of file
diff --git a/Programm.md.txt b/Programm.md.txt
new file mode 100644
index 0000000..10c7487
--- /dev/null
+++ b/Programm.md.txt
@@ -0,0 +1,13 @@
+Modes:
+
+Manual:
+	Buttons to inc/dec fan speed(0-10V) (show in percents 10% == 1V)
+	Display fan speed + pressure.
+	Fan updates at the same time as UI
+Automatic:
+	Buttons to inc/dec fan pressure level (0-120 Pa) (show in percents 10% == 1V)
+	Pressure to inc/dec fan speed
+
+BTN1: auto/manual
+auto: BTN3 - inc pressure,  BTN2 - dec pressure
+manual: BTN3 - inc voltage,  BTN2 - dec voltage