Adafruit EYESPI BFF for QT Py or Xiao - 18 Pin FPC Connector

Our QT Py boards are a great way to make very small microcontroller projects that pack a ton of power - and now we have a way for you to add a small, colorful, and bright display to any project.

Our most recent display breakouts have come with a new feature: an 18-pin "EYE SPI" standard FPC connector with flip-top connector . This is intended to be a sort-of " STEMMA QT for displays" - a way to quickly connect and extend display wiring that uses a lot of SPI pins. In this case we need a lot of SPI pins, and we want to be able to use long distances, so we go with an 18-pin 0.5mm pitch FPC.

With such a slim and flexible cable, its a perfect matching for our QT Py boards to make extra smol microcontroller boards with big bold colorful displays or power-sipping E-Ink .

Don't forget you'll also want an 18-pin EYESPI FPC cable . And of course one of our EYESPI displays too - look for the EYESPI logo on the back to know you've got one that can clip in.

• MOSI/MISO/SCK SPI pins are connected to the default SPI port on the QT Py
• SDA/SCL I2C pins are connected to the I2C port on the QT Py headers - some boards have a separate QT Py I2C port so keep in mind they may be separate busses.
• TFT CS on TX pin - but can be re-configured/disabled by cutting a solder jumper.
• TFT DC on RX pin - but can be re-configured/disabled by cutting a solder jumper.

We also have 'sometimes used' pins that can be re-configured/disabled by cutting a solder jumper

• IRQ on A0 pin - Many of our displays don't use the IRQ pin unless there's a touchscreen.
• Touch CS on A1 pin - Many of our displays don't have a touchscreen.
• Memory CS on A2 pin - Only our E-Ink displays have a separate memory SRAM chip, which you may be able to skip using on most QT Py's.
• SD Card CS on A3 pin - Or use for whatever you like if you aren't using the SD Card socket on of our display breakouts.

There's also two through-hole solder pads for extra pins that are often considered optional and we didn't have any more IO to spare. If you aren't using any of the 4 pins above or the I2C port, you could wire these two pins with jumper wires as you desire.

• Backlight control - this is default on for most of our displays, or unused on E-Ink,
• Display reset - this is default on for most of our displays. Sometimes its used for low-power on E-Ink.

We include some headers that you can solder to your QT Py. You can also pick up an Itsy Bitsy short female header kit to make it removable but compact , you'll just need to trim down the headers to 7 pins long.

• Comes as an assembled and tested PCB
• For any QT Py or Xiao boards

QT Py, display and EYESPI cable are not included .