aerialist

Implement change suggested by ossvr at https://github.com/nkolban/esp32-snippets/issues/230#issuecomment-554595413 This solved reconnection problem I faced with Macbook Pro with MacOS Catalina

Adding sleep prevents "USBTimeoutError: [Errno 110] Operation timed out". ### Description ### Tested with Raspberry Pi with this printer via USB https://a.aliexpress.com/_oFusnk4