tutorials:wireless:esp:esp8266:nodemcu_v1
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tutorials:wireless:esp:esp8266:nodemcu_v1 [2017/07/18 19:50] modtronix |
tutorials:wireless:esp:esp8266:nodemcu_v1 [2017/07/18 21:43] (current) modtronix |
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| | GPIO15 | J2-11 | D8 | D8 | Shared | HSPI CSn pin. Also TXD2. Has 12K **pull-down** resistor. Must be low at startup to boot from flash - Do NOT connect directly to ground. \\ Can be used as **general purpose output** (or input, but ensure it does not clash with pull-down resistor). | | | GPIO15 | J2-11 | D8 | D8 | Shared | HSPI CSn pin. Also TXD2. Has 12K **pull-down** resistor. Must be low at startup to boot from flash - Do NOT connect directly to ground. \\ Can be used as **general purpose output** (or input, but ensure it does not clash with pull-down resistor). | | ||
| | GPIO16 | J2-1 | D0 | D0 | Shared (LED) | User **LED**(active low) on NodeMCU (no LED with just using ESP-12F). \\ Can be used as **general purpose output**. Note that the LED will turn on when output is low. | | | GPIO16 | J2-1 | D0 | D0 | Shared (LED) | User **LED**(active low) on NodeMCU (no LED with just using ESP-12F). \\ Can be used as **general purpose output**. Note that the LED will turn on when output is low. | | ||
| - | | | J1-1 | A0 | A0 | Yes | User **Analog Input**, connected to ESP8266 Analog input via 0.3125 voltage divider(100k and 22k resistors). | | + | | | J1-1 | A0 | A0 | Yes | User **Analog Input**, connected to ESP8266 Analog input(0-1V input) via 0.3125 voltage divider(100k and 22k resistors). This allows a 0 to 3.2V input. | |
| | ADC | J1-2 | RSV | | | Do not use, use A0 for analog input! Connected to ESP8266 Analog input. Gets input from A0 via voltage divider. | | | ADC | J1-2 | RSV | | | Do not use, use A0 for analog input! Connected to ESP8266 Analog input. Gets input from A0 via voltage divider. | | ||
| | EN | J1-12 | EN | | | Enable pin - has 12K **pull-up** resistor. This is connected to the CH_PD pin of the ESP-12, which requires a pull-up resistor (is provided by the NodeMCU) | | | EN | J1-12 | EN | | | Enable pin - has 12K **pull-up** resistor. This is connected to the CH_PD pin of the ESP-12, which requires a pull-up resistor (is provided by the NodeMCU) | | ||
tutorials/wireless/esp/esp8266/nodemcu_v1.txt ยท Last modified: 2017/07/18 21:43 by modtronix
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