I recently purchased the S3 Stick from M5Stack.
It's an ESP32 with:
- microphone and speaker
- wifi
- bluetooth
- screen
- two buttons
- IMU with six dimensions
all for under $35.
You can see a video of me using it to control a web based mini plane simulator https://x.com/alexpotato/status/2109782226841870352?s=20
Wild how cheap this kind of stuff has gotten.
Economies of scale, isn't it? They are used in billions of devices.
They are so cheap that you can put them in the moving parts of a robot instead of just in the body now.