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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