Update README.md

Author: AlekUnderwater

README.md

@@ -8,19 +8,9 @@
 - [Project 1. Making a disc hydrophone](/projects/disk_hydrophone/)
 - [Project 2. Making a hydrophone preamplifier](/projects/preamplifier_for_hydrophone/)
   - [Appendix to Project 2: recording of underwater sounds from under the ice](/projects/recordings_under_ice/)
-- COMING SOON: [Project 3. Hardcore: locating a submarine with Arduinos]()
+- [COMING SOON: Project 3. Marking underwater housings for electronics](/projects/underwater_housings/)
 
-# If you don't want to make, you can order:
-## uSwitch
-### Underwater acoustic amature remote control system  
-* [Data brief: uSwitch](/products/uSwitch/uSwitch_DataBrief_en.md)
-* [Device specification: uSwitch TX](/products/uSwitch/uSwitch_TX_Specification_en.md)
-* [Device specification: uSwitch RX](/products/uSwitch/uSwitch_RX_Specification_en.md)
-* [COMING SOON: uSwitch: videos, tutorials, etc.](/products/uSwitch/media)
-* [COMING SOON: uSwitch: Examples for Arduino]()
 
-## Transducers & hydrophones
-* [Transducer RT-1.d23h03-1](/products/transducers/RT_1_d23h03_1_en.md)
 
 # Our other education projects