Editing Wemos D1 Mini (section)

==pins_arduino.h==
 <nowiki>/*
  pins_arduino.h - Pin definition functions for Arduino
  Part of Arduino - http://www.arduino.cc/
*/

#define PIN_WIRE_SDA (4)
#define PIN_WIRE_SCL (5)
//Wemos D1 Mini, pins D2(SDA) and D1(SCL).. Wire.begin(4, 5)

static const uint8_t SDA = PIN_WIRE_SDA;
static const uint8_t SCL = PIN_WIRE_SCL;

#define LED_BUILTIN 2
//                        = GPIO
static const uint8_t D0   = 16;
static const uint8_t D1   = 5;
static const uint8_t D2   = 4;
static const uint8_t D3   = 0;
static const uint8_t D4   = 2;
static const uint8_t D5   = 14;
static const uint8_t D6   = 12;
static const uint8_t D7   = 13;
static const uint8_t D8   = 15;
static const uint8_t RX   = 3;
static const uint8_t TX   = 1;

/*
Re: Wemos Board. Usable pins for general I/O?
TX, GPIO1: Serial Port. Also usable as GPIO if not using serial.
RX, GPIO3: Serial Port. Also usable as GPIO if not using serial.
D0, GPIO16: Momentary high on boot.
D1, GPIO5: nothing special.
D2, GPIO4: nothing special.
D3, GPIO0: pull low during boot for flash mode (connects to a push button).
D4, GPIO2: is pulled up during boot & internal LED (active LOW).
D5, GPIO14: nothing special.
D6, GPIO12: nothing special.
D7, GPIO13: nothing special.
D8, GPIO15: fixed external pull-down (for boot).
*/</nowiki>
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