Inkplate 5V2 – Free GPIO pins
Some pins on the onboard ESP32 WROVER-E are reserved for internal use, for example the connection to the e-paper display, so they're not available for your own applications. This page lists the GPIO pins you can use externally.
If you just want the short list, these Inkplate 5V2 pins aren't connected to any external component:
P1-3, P1-4, P1-5, P1-6, P1-7. They're all on the GPIO expander peripheral.
Inkplate 5V2 free pins
The table below shows what each pin connects to, along with its functions:
Free pin table
| PIN | CONNECTED TO | FUNCTION |
|---|---|---|
| IO12 | SDCARD | ADC, TOUCH5, RTC_GPIO15, MTDI, HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3 |
| IO13 | SDCARD | ADC, TOUCH4, RTC_GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_RX_ER |
| IO14 | SDCARD | ADC, TOUCH6, RTC_GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2 |
| IO15 | JP3 Check jumper details | ADC, TOUCH3, MTDO, HSPICS0, RTC_GPIO13, HS2_CMD, SD_CMD, EMAC_RXD3 |
| IO34 | JP6 Check jumper details | ADC, RTC_GPIO4 |
| IO35 | BATTERY | ADC, RTC_GPIO5 |
| IO36 | WAKEUP BUTTON | ADC, RTC_GPIO0 |
| IO39 | JP2 Check jumper details | ADC, RTC_GPIO3 |
| P1-1 | JP8 Check jumper details | I/O |
| P1-2 | JP7 Check jumper details | I/O |
| P1-3 | FREE | I/O |
| P1-4 | FREE | I/O |
| P1-5 | FREE | I/O |
| P1-6 | FREE | I/O |
| P1-7 | FREE | I/O |