Inkplate 2 – Free GPIO pins
Inkplate 2's onboard ESP32 WROVER-E has some pins reserved for internal use (for example, the connection to the e-paper display) and cannot be used for end-user applications. This page contains a list of the available GPIO pins that can be used for external applications.
If you don't need pin details and are just interested in the pins, here are the Inkplate 2 pins that are not connected to any external component:
IO2, IO5, IO12, IO13, IO14, IO15, IO25, IO26, IO34, IO35, IO36, IO39
Inkplate 2 free pins
See the table below for pin functions and what each pin is connected to:
Free pin table
| PIN | CONNECTED TO | FUNCTION |
|---|---|---|
| RXD | CH340 | UART receive pin |
| TXR | CH340 | UART transmit pin |
| IO0 | EXTERNAL PULL-UP RESISTOR | ADC, RTC_GPIO, TOUCH, EMAC_TX_CLK |
| IO2 | FREE | ADC, TOUCH, RTC_GPIO, HSPIWP, HS2_DATA0, SD_DATA0 |
| IO4 | FREE | ADC, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1, EMAC_TX_ER |
| IO5 | FREE | VSPICSO, HS1_DATA6, EMAC_RX_CLK |
| IO12 | FREE | ADC, TOUCH5, RTC_GPIO15, MTDI, HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3 |
| IO13 | FREE | ADC, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER |
| IO14 | FREE | ADC, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2 |
| IO15 | FREE | ADC, TOUCH3, MTDO, HSPICSO, RTC_GPIO13, HS2_CMD, SD_CMD, EMAC_RXD3 |
| IO25 | FREE | DAC, ADC, RTC_GPIO6, EMAC_RXD0 |
| IO26 | FREE | DAC, ADC, RTC_GPIO7, EMAC_RXD1 |
| IO34 | FREE | ADC, RTC_GPIO4 |
| IO35 | FREE | ADC, RTC_GPIO4 |
| IO36 | FREE | ADC, RTC_GPIO0 |
| IO39 | FREE | ADC, RTC_GPIO3 |