So it’s a two part . 1 can I use the led ch 10 for a buzzer? 2 is the alienwhoop zero comparable with the silvervice app?
At the moment I believe no is the answer to both those questions. A buzzer needs a mosfet driver unlike the led and questions about silvervise might be better handled on the RCGroups thread here.
You can make your own buzzer or buy one found here; http://sirdomsen.diskstation.me/dokuwiki/doku.php?id=adding_a_buzzer and use CLK or DAT for signal.
And depending on the radio and MCU chip you can use Silvervise app. I think you are capable on the zer0 because it runs an XN297L. Change the protocol to rx_bayang_BLE_app and give it a try. You may need to go into the .c file and change some settings
Thanks for the info . Going to do my research and try to make one work