FWIW, based on recommendations here at HN, I went with the WEMOS D1 Mini early this year when I decided to replace all the electronics in my kids' RC trucks. The project went amazingly well. In each of the 2 trucks, I wired it up with a WEMOS motor controller driving a 9V/2A motor, a smaller motor for turning, and some LEDs. I 3D printed new shells with Lego compatible studs on top. I hot glued the electronics inside. I wrote mostly-ordinary Arduino code. All of this took only about 2 weeks in my spare time.
So now my kids have 2 wifi-tablet-controlled trucks with very custom programming (for N-point turns, playing music through the motor windings, headlight blinking, etc.) and the ability to update the program over the air at any time. It's basically magic. I spent only about $8 per truck.
Yeah, the WEMOS D1 is the real deal. I love it so much that I bought a pile of them before I've even decided what I want to use them for.
So now my kids have 2 wifi-tablet-controlled trucks with very custom programming (for N-point turns, playing music through the motor windings, headlight blinking, etc.) and the ability to update the program over the air at any time. It's basically magic. I spent only about $8 per truck.
Yeah, the WEMOS D1 is the real deal. I love it so much that I bought a pile of them before I've even decided what I want to use them for.