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ESP8266 NodeMCU v3 Pinout
Tensilica L106 · 80/160 MHz · 3.3V I/O · 11 usable GPIO · 1x ADC · WiFi 802.11 b/g/n
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Boot-Pins: D3 (GPIO0) und D4 (GPIO2) benotigen Pull-up, D8 (GPIO15) Pull-down beim Start. GPIO 6-11 (SK/S0-S3/SC) sind mit dem Flash belegt — nicht nutzbar. ADC-Eingang max. 3,3V (ohne Teiler: 1V).
ESP8266 NodeMCU v3 (Lolin)
-- Micro USB --
A0D0
GD1
VUD2
S3D3
S2D4
S13V3
SCG
S0D5
SKD6
GD7
3V3D8
ENTX
RSTRX
GG
VING
11 nutzbare GPIO · ADC max 3,3V
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Click pin for details
All pins
30 Pins| Pin | Typ | Funktionen | Beschreibung |
|---|---|---|---|
A0 | ADC | ADC (0-3,3V) | Analog input. 10-bit ADC, 0-3.3V (Note: many modules have an internal voltage divider for 0-1V). |
G | GND | Ground | Masse (GND). |
VU | Power | VUSB | Raw USB voltage (5V). Input or output depending on power supply. Tapped before regulator. |
S3 | Spezial | GPIO10, SD3 | GPIO 10 (SD_DATA3) — Internally connected to Flash chip. Not for external use. |
S2 | Spezial | GPIO9, SD2 | GPIO 9 (SD_DATA2) — Internally connected to Flash chip. Not for external use. |
S1 | Spezial | GPIO8, SD1 | GPIO 8 (SD_DATA1/SPI0 D) — Flash pin, not available. |
SC | Spezial | GPIO11, SD_CMD | GPIO 11 (SD_CMD/SPI0 CS) — Flash pin, not available. |
S0 | Spezial | GPIO7, SD0 | GPIO 7 (SD_DATA0/SPI0 Q) — Flash pin, not available. |
SK | Spezial | GPIO6, SCLK | GPIO 6 (SD_CLK/SPI0 CLK) — Flash pin, not available. |
G | GND | Ground | Masse (GND). |
3V3 | Power | 3.3V Out | 3,3V output of the integrated LDO regulator (RT9013, ~500 mA). |
EN | Spezial | Enable | Chip Enable. Internal HIGH. Pull to GND to disable WiFi (deep sleep mode). |
RST | Spezial | Reset | Reset-Pin. Pull to GND to restart. Internal pull-up. |
G | GND | Ground | Masse (GND). |
VIN | Power | VIN | External voltage input. Powers the integrated 3.3V LDO regulator. |
D0 | Digital | GPIO16 | GPIO 16 — No PWM, no I2C, no Interrupt. Can connect RST-Pin for Deep-Sleep-Wakeup. |
D1 | I2C | GPIO5, I2C SCL, PWM | GPIO 5 — Standard I2C SCL (Wire), PWM. Einer der stabilsten GPIO-Pins. |
D2 | I2C | GPIO4, I2C SDA, PWM | GPIO 4 — Standard I2C SDA (Wire), PWM. |
D3 | Digital | GPIO0, Boot-Pin, 10k PU | GPIO 0 — Boot/Flash-Pin with 10k pull-up. Pull to LOW for flashing. LOW at boot = Flash mode. |
D4 | Digital | GPIO2, LED, Boot-Pin, TXD1, 10k PU | GPIO 2 — Onboard-LED (inv.), Boot-Pin with 10k pull-up, UART1 TX. Hold HIGH at boot. |
3V3 | Power | 3.3V Out | 3.3V Output. Identical to left 3V3-Pin. |
G | GND | Ground | Masse (GND). |
D5 | SPI | GPIO14, SPI SCK, PWM | GPIO 14 — SPI (HSPI) Clock, PWM. Sicher nutzbar. |
D6 | SPI | GPIO12, SPI MISO, PWM | GPIO 12 — SPI (HSPI) MISO, PWM. Sicher nutzbar. |
D7 | SPI | GPIO13, SPI MOSI, PWM, UART0 CTS | GPIO 13 — SPI (HSPI) MOSI, PWM, UART0 CTS. |
D8 | SPI | GPIO15, SPI CS, Boot-Pin, 10k PD | GPIO 15 — Boot-Pin with 10k pull-down. Always LOW at boot. SPI (HSPI) CS. |
TX | UART | GPIO1, UART0 TX | GPIO 1 — UART0 TX (serial monitor). ESP8266 sends boot messages during startup. |
RX | UART | GPIO3, UART0 RX | GPIO 3 — UART0 RX. Flash-Prozess nutzt diesen Pin. |
G | GND | Ground | Masse (GND). |
G | GND | Ground | Masse (GND). |