Any open source alarm clock radio?
retiolus@lemmy.cat to 
I'm looking for a radio alarm clock project that I could do with a Raspberry Pi or a NodeMCU (ESP32/ESP8266), a small LCD screen and a small speaker.
Do you have any ideas? Does it exist? If not, how should I approach the project? Any advice on speakers for the Raspberry Pi?
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You could go a step further and use a wifi switch, with that you could change the "alarm times" and for how long it should stay on right from your phone.
Shelly does have some nice options for wifi relay switches
It's probably also worth noting that pretty much all of these WiFi switches rely on their manufacturer's servers to keep working. If that company goes belly up or simply decides it no longer wants to pay to keep these devices functional, the switch becomes a paperweight.
Not if you're willing to flash your own firmware, what is often possible: https://tasmota.github.io/docs/ (and others)
Most of the time it requires opening the switch and connecting to the serial port that's inside more or less exposed. Nothing especially difficult, but can be a little intimidating at first. It's not easy to fail, though, and those switches are so cheap that even if you manage to break it somehow then the loss is not great.