Originally Posted by Alchemist
Why not use the ESP8266 chip with arduino IDE ? It's much smaller then the uno and already has the wifi chip set.
You really need to go check out M5Stack.com. They make the hardware. I've used the ESP devices in several designs. The ESP32 device used in the M5stack is impressive. That's the CPU I use in my proprietary designs.
They are still finding their footing in terms of product quality and support, but I am looking at modifying the mechanicals and electronics. Did you know that it's designed to plug into Lego? The mind boggles.