Update README.md

README.md

@@ -30,7 +30,9 @@ The display is a standard 16x2 LCD, but with an I2C interface. The display is co
 - [X] add some more filtering
 - [x] implement the user I/O bit: LCD+Rotary encoder+buttons
 - [ ] implement AGC and RSSI
+- [ ] implement other modes than USB
 - [ ] sort out the surrounding HW
+- [ ] maybe design a PCB?
 
 ## Installing and using the SDK for Windows: 
 Please refer to https://github.com/ndabas/pico-setup-windows/releases where the latest installer can be downloaded (e.g. **pico-setup-windows-0.3-x64.exe**).