{"title":"Adafruit eInk Feather Friend with 32KB SRAM","handle":"adafruit-eink-feather-friend-with-32kb-sram","url":"/products/adafruit-eink-feather-friend-with-32kb-sram","description":"The Adafruit eInk Feather Friend is a FeatherWing-format driver board for eInk/e-paper displays with a standard 24-pin FPC connector. It includes all the power supply circuitry and level shifting needed to connect your favourite display (up to tri-colour 4.2\") to any Feather board via SPI, plus a MicroSD card slot for storing images and data files.\n\nLike the Breakout Friend version, it includes a 256 Kbit (32 KB) SRAM chip that handles frame buffering so you don't consume your microcontroller's RAM. The SRAM supports displays up to 4.2\" (300×400 tri-colour) and shares the SPI bus with the display, requiring only one extra chip-select pin. The included Arduino and CircuitPython libraries manage everything automatically — just use it like any Adafruit_GFX compatible display.\n\nKey Features\n\n\n32 KB SRAM Buffer – Offloads frame buffering from your microcontroller (supports up to 300×400 tri-colour)\n\n24-Pin FPC Connector – Compatible with most standard small-to-medium eInk displays\n\nMicroSD Card Slot – Store images, text files, and other display content\n\nFeather Form Factor – Plugs directly into any Feather board; stackable with other FeatherWings\n\nLevel Shifting – Works with both 3.3V and 5V logic levels\n\nPower Supply Circuitry – All required voltage rails for eInk displays built in\n\nSPI Interface – Standard SPI connection with shared bus for display and SRAM\n\n\nAlso Available\n\n\neInk Breakout Friend (standalone breadboard-friendly version)\n\n\nIdeal For\n\nAdding an e-paper display to Feather-based projects\nLow-power IoT displays and battery-powered signage\nDaylight-readable information panels and dashboards\nProjects requiring image storage on MicroSD alongside e-paper output\n\n\nPackage Contents\n\n1× Adafruit eInk Feather Friend with 32 KB SRAM (assembled)\n1× Header strip\n\n\n\nImportant: eInk display and extension cable are not included. This board works with most eInk displays that have a 24-pin FPC connector — verify your display's pinout is compatible before purchasing.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":4578,"title":"Default Title","sku":"AF-4446","price":17.46,"on_sale":false,"in_stock":true,"available_quantity":93,"option1":"Default Title"}]}