Quote Originally Posted by ardhuru View Post
I'm wondering, why use an Arduino at all? Do you need more I/Os than what the ESP8266 12E has?
It's a DIY project and the Arduino Mini Pro is easier for end users to handle. WiFi & Bluetooth are optional and function only as wireless to serial interfaces. It's actually two projects that can share most of the code - one needs all of the pins on the Arduino. And the Arduino Mini Pro has an onboard 5V LDO allowing more flexibility in providing power.

Finally, I'm 74 and in poor health so I dislike delays.