Geekcreit D1 mini V2.2.0 WIFI Internet Development Board Based ESP8266 4MB FLASH ESP-12S Chip
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Specifications
| Geekcreit D1 mini V2.2.0 WIFI Internet Development Board Based ESP8266 4MB FLASH ESP-12S Chip |
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| https://bogza.ro/index.php/Geekcreit_D1_mini_V2.2.0_WIFI_Internet_Development_Board_Based_ESP8266_4MB_FLASH_ESP-12S_Chip | |
Feature:
- 11 digital input/output pins, all pins have interrupt/pwm/I2C/one-wire supported(except D0)
- 1 analog input(3.2V max input)
- a Micro USB connection
Package included:
1 x D1 mini V2.2.0 2 x Long female pin 2 x Short female pin 2 x Normal pin
| Label | GPIO | Input | Output | Notes |
| D0 | GPIO16 | no interrupt | no PWM or I2C support | HIGH at boot
used to wake up from deep sleep |
| D1 | GPIO5 | OK | OK | often used as SCL (I2C) |
| D2 | GPIO4 | OK | OK | often used as SDA (I2C) |
| D3 | GPIO0 | pulled up | OK | connected to FLASH button, boot fails if pulled LOW |
| D4 | GPIO2 | pulled up | OK | HIGH at boot
connected to on-board LED, boot fails if pulled LOW |
| D5 | GPIO14 | OK | OK | SPI (SCLK) |
| D6 | GPIO12 | OK | OK | SPI (MISO) |
| D7 | GPIO13 | OK | OK | SPI (MOSI) |
| D8 | GPIO15 | pulled to GND | OK | SPI (CS)
Boot fails if pulled HIGH |
| RX | GPIO3 | OK | RX pin | HIGH at boot |
| TX | GPIO1 | TX pin | OK | HIGH at boot
debug output at boot, boot fails if pulled LOW |
| A0 | ADC0 | Analog Input | X |