diff --git a/README.md b/README.md
index 21f0310..4134d28 100644
--- a/README.md
+++ b/README.md
@@ -3,8 +3,8 @@ BTA primary mirror thermal monitoring using STM32 and TSYS01
 
 File structure:
 
-- CubeMX -- project in CubeMX (good thing to adjust peripherial)
-- kicad -- hardware schematics
+- kicad -- hardware schematics (I2C 48-channels multiplexer & main controller board)
 - STM32 -- firmware sources
+- m-files -- m-files for Octave used in tests
 - src -- PC-side sources
-- tests -- some data with sensors' tests
\ No newline at end of file
+- tests -- some data with sensors' tests
diff --git a/STM32/Readme.md b/STM32/Readme.md
new file mode 100644
index 0000000..7fb1b0e
--- /dev/null
+++ b/STM32/Readme.md
@@ -0,0 +1,6 @@
+2sensors_logging - source for loggint temperature of 2 sensors
+inc - system include files
+src4multiplexer - source code for I2C multiplexer (48 channels * 2 sensors)
+Tcalc - test code for temperature calculation inside MCU
+Tcalc_screen - Tcalc displaying T on OLED screen
+TSYS_controller - MAIN controller code (USB, CAN, UART1)
diff --git a/specification b/specification
deleted file mode 100644
index d1b0c4b..0000000
--- a/specification
+++ /dev/null
@@ -1,36 +0,0 @@
-TSYS01  TE           - 100
-0603 0.1мкФ          - 100
-STM32F042C6T         - 20
-LM2576HVT-5.0        - 10
-LM1117IMP-3.3        - 10
-ADR02ARZ             - 10
-0603 30пф            - 100
-1206 10 мкф          - 100
-0603 60.4ом 1%       - 100
-0603 10КОм 5%        - 200
-1N5822               - 10
-LQH32MN101J 100мкГн  - 10
-0603 4.7КОм 5%       - 200
-2N7000               - 200
-TJ4p4c розетка       - 160
-TP4P4C вилка         - 200
-MCP2551-I/SN         - 10
-OrangePi Plus        - 2
-DR-15-5 MW           - 2
-DR-120-12 MW         - 2
-Витая пара (305м)    - 1
-
-Дополнительно:
-0603 120 Ом 1%       - 100
-0805 1кОм 0.1% 50ppm - 100
-USB6B1               - 20
-PESD1CAN             - 20
-IP4220CZ6            - 20
-STM32F103VET6        - 5
-STM8S003F3P6         - 20
-N2A-06-T007R-350     - 4
-MAX485ECSA           - 10
-NUCLEO-F042K6        - 1
-
-ali:
-74HC4051D            - 100