Hi All 
I’m trying to hunt down the best board for my new project. Basically I need the following functionality either on the board or via add-on boards. I can see a few possibilities but I haven’t had much experience so I thought it best to ask.
Requirements
- TinyML (processed onboard) 0.5 and above Tops
- Generate and encode sinewave between 18kHz - 21kHz
- Microphone input
- Class d Speaker out (=>3w preferably)
- Low power
- Ethernet (RJ45)
Not a requirement but would be great - POE
- Wifi
- Low budget