it's very easy to do with an Arduino. Get a nano 33 IoT it's enough and inexpensive. the buttons are simple to interface. to strike the bell you have two option

it's very easy to do with an Arduino. Get a nano 33 IoT it's enough and inexpensive. the buttons are simple to interface. to strike the bell you have two options 1 use a servomotor, it's less elegant but very easy to interface 2 use a solenoid , it will strike the bell very nicely (you'll need a MOSFET or similar to drive the solenoid from Arduino) from a software perspective you could use the Arduino cloud : in about 15 minutes you'll have it up and running. then you can use the API to control the bell . you can also use a generic mqtt server , there are tons of examples but you have to write a lot more code yourself. feel free to ask any questions