increase/decrease freq by 0.1 MHz over serial
-rw-r--r-- 1265 .gitmodules
drwxr-xr-x - AD9850
drwxr-xr-x - DHT11_DS18B20_temperature
drwxr-xr-x - RF433_Sockets
drwxr-xr-x - libraries
drwxr-xr-x - upstream