Inkplate 6 – Jumpers
Inkplate 6 features several on-board jumpers, which can be used to modify the behavior of certain components. Some jumpers are connected by default, while others need to be manually shorted.
See the table below for a detailed explanation of each jumper's function:
Board jumpers
| Jumper | Default State | Function |
|---|---|---|
| JP1 | NO (not connected) | When shorted, it keeps the microSD card powered at 3.3v at all times. Useful for troubleshooting, but not ideal for low-power applications. |
| JP2 | Connected to IO34 by default | Switch between connecting the INTB pin of the IO expander to the IO34 pin of the ESP32 or make that pin user-accessible. |
| JP3 | NC (connected) | Connects pin P1-2 of IO expander 1 to the gate of the MOSFET that powers the microSD card, letting the library switch the card on and off. |
| JP4 | NC (connected) | Connects the Chip Select pin of the microSD card slot to IO15 of the ESP32. Cut it to drive the card's CS from the GPIO15 breakout pad instead. |
| JP5 | Connected to INT by default | Selects what the RTC drives on IO39: a digital, open-drain, active low interrupt output, or a programmable digital square-wave output that can be used as a system clock. |
| JP6 | NC (connected) | Connects pin P1-1 of IO expander 1 to the MOSFET that enables the battery voltage divider, so battery voltage is only measured when requested. |
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