ESP8266 motor shield

So it looks like D1(GPIO 5) is a PWM to set motor As speed, D2 (GPIO4) is the same for motor B, D3 (GPIO0) sets the direction of motor A and D4 (GPIO2) is the direction for motor B. What you call them in the code is whichever of those names the compiler understands. – Andrew Jan 17 at 9:59