{"product_id":"adafruit-4086-2-13-inch-tri-color-eink-epaper-display-with-sram-red-black-white","title":"Adafruit 4086 2.13 inch Tri-Color eInk \/ ePaper Display with SRAM - Red Black White","description":"\u003cmeta name=\"description\" content=\"Buy Adafruit 4086 2.13 inch Tri-Color eInk \/ ePaper Display with SRAM - Red Black White online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eAdafruit 4086 2.13 inch Tri-Color eInk \/ ePaper Display with SRAM - Red Black White\u003c\/h1\u003e\n\n\u003cp\u003eThe Adafruit 4086 is a 2.13-inch tri-color electronic ink display module capable of rendering images in red, black, and white with exceptional clarity and minimal power consumption. This display is widely used by embedded systems engineers, IoT developers, and makers who require low-power visual output for battery-operated applications including smart labels, environmental monitoring dashboards, and portable data loggers. It solves the critical challenge of maintaining long operational battery life while delivering crisp, readable visual content without the power drain associated with traditional LCD or OLED screens.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe Adafruit 4086 utilizes advanced electrophoretic display technology where millions of microcapsules containing charged pigment particles create images through electrical field manipulation. Unlike traditional displays that require constant backlight power, eInk technology only consumes energy during image updates, making it ideal for applications requiring weeks of operation on a single battery charge. The tri-color variant incorporates red pigment particles alongside black and white, enabling more expressive visual communication while maintaining the ultra-low standby power characteristics that define the eInk advantage. The integrated SRAM buffer allows smooth image transitions and supports partial refresh cycles, reducing power consumption during incremental content updates.\u003c\/p\u003e\n\n\u003cp\u003eThis 2.13-inch form factor strikes an optimal balance between screen real estate and physical footprint, making it suitable for wearable projects, shelf-label systems, and compact IoT devices. The display communicates via SPI interface, compatible with Arduino, Raspberry Pi, and other microcontroller platforms. With a resolution of 250x122 pixels and support for 7-color palette rendering, developers can create sophisticated visual hierarchies and information density within the compact display area. The module includes a flexible PCB connector and mounting holes for straightforward integration into custom enclosures.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eTri-Color eInk \/ ePaper Display Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAdafruit Industries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Size\u003c\/td\u003e\n\u003ctd\u003e2.13 inches diagonal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e250x122 pixels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor Support\u003c\/td\u003e\n\u003ctd\u003eRed, Black, White tri-color\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003eSPI (Serial Peripheral Interface)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e3.3V to 5V compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefresh Rate\u003c\/td\u003e\n\u003ctd\u003ePartial refresh 1-2 seconds, full refresh 3-5 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandby less than 1 microamp, active refresh 50-100 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eUltra-Low Power Consumption: Standby current below 1 microamp enables month-long battery operation without charging, ideal for remote IoT sensors and wearable devices\u003c\/li\u003e\n\u003cli\u003eTri-Color Display Capability: Red, black, and white color rendering provides enhanced visual communication compared to monochrome displays while maintaining eInk efficiency\u003c\/li\u003e\n\u003cli\u003eIntegrated SRAM Buffer: On-board static RAM enables smooth image transitions and partial refresh operations, reducing power draw during content updates by 60-70 percent\u003c\/li\u003e\n\u003cli\u003eSPI Interface Compatibility: Direct integration with Arduino, Raspberry Pi, ESP32, and STM32 microcontrollers through standard SPI protocol without additional interface modules\u003c\/li\u003e\n\u003cli\u003eFlexible Mounting Options: Included connector and PCB mounting holes facilitate seamless integration into custom enclosures and wearable form factors\u003c\/li\u003e\n\u003cli\u003eWide Operating Temperature Range: Functional from -20 to 60 degrees Celsius, supporting deployment in industrial, outdoor, and extreme environment applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eSmart Shelf Labels and Retail Pricing Displays: Deploy networked price tags that update remotely without power cables, reducing retail infrastructure costs and enabling dynamic pricing strategies across store locations\u003c\/li\u003e\n\u003cli\u003eWearable Health Monitoring Devices: Integrate into fitness trackers and medical alert wristbands where multi-day battery life is essential and the tri-color display communicates critical health metrics at a glance\u003c\/li\u003e\n\u003cli\u003eEnvironmental Data Logging Stations: Build portable weather stations and air quality monitors that display real-time sensor readings while operating on solar panels or AA batteries for weeks without maintenance\u003c\/li\u003e\n\u003cli\u003eIoT Dashboard and Control Panels: Create battery-powered wall-mounted displays for home automation, industrial process monitoring, and facility management that update wirelessly while consuming minimal standby power\u003c\/li\u003e\n\u003cli\u003eE-Reader and Document Display Terminals: Develop portable document viewers and e-book readers where the eInk technology provides paper-like readability without eye strain during extended reading sessions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eBegin by connecting the Adafruit 4086 to your microcontroller via SPI pins: MOSI to data input, MISO to data output, CLK to clock, and CS to chip select, with power supplied from 3.3V or 5V depending on your controller's output. Install the Adafruit GFX and eInk display libraries through the Arduino IDE library manager, which provide high-level functions for drawing shapes, text, and images. Initialize the display object with your specific pin assignments and call the begin() function to configure the SPI communication parameters and load the display controller firmware.\u003c\/p\u003e\n\n\u003cp\u003eTo display content, use the drawing functions such as drawPixel(), drawLine(), drawRect(), and drawText() to compose your desired image in the frame buffer. The display supports both monochrome and tri-color operations; specify color values as BLACK, WHITE, or RED when drawing elements. After composing your complete image, call the display() function to transfer the frame buffer contents to the physical display through SPI, which typically requires 3-5 seconds for a full refresh. For power-critical applications, utilize partial refresh modes that update only changed regions, reducing refresh time to 1-2 seconds and power consumption to 10-20 milliamps per update cycle.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between partial refresh and full refresh on eInk displays?\u003c\/summary\u003e\n\u003cp\u003ePartial refresh updates only the pixels that have changed since the last update, consuming significantly less power and completing in 1-2 seconds, making it ideal for frequently updated content like clock displays or sensor readings. Full refresh rewrites every pixel on the display, taking 3-5 seconds but eliminating any ghosting artifacts that may accumulate after multiple partial refreshes. For applications requiring pristine image quality over extended operation, perform a full refresh every 10-20 partial updates to clear accumulated display artifacts while maintaining overall power efficiency.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan the Adafruit 4086 display be used with Raspberry Pi directly?\u003c\/summary\u003e\n\u003cp\u003eYes, the Adafruit 4086 is fully compatible with Raspberry Pi through the GPIO SPI pins. Connect MOSI to GPIO 10, MISO to GPIO 9, CLK to GPIO 11, and CS to any available GPIO pin configured as output. Install the Adafruit libraries using pip package manager and configure the display object with your chosen CS pin number. The Raspberry Pi's 3.3V output directly powers the display module without requiring additional voltage regulation, and the SPI communication achieves reliable operation at standard clock speeds up to 10 MHz.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow long does the display retain an image after power is removed?\u003c\/summary\u003e\n\u003cp\u003eThe eInk display is bistable, meaning it retains the last displayed image indefinitely even with power completely disconnected. This unique characteristic allows you to display critical information and then power down the entire system, with the image remaining visible for days or weeks without any power consumption. This feature is particularly valuable for emergency alerts, last-known-status displays, and applications where the device may be powered off for extended periods while still requiring visible feedback.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum SPI clock frequency supported by the Adafruit 4086?\u003c\/summary\u003e\n\u003cp\u003eThe Adafruit 4086 supports SPI clock frequencies up to 10 MHz, though most applications operate reliably at 1-5 MHz. Higher clock speeds reduce the time required to transfer frame buffer data to the display, which is beneficial when performing frequent updates. However, if you experience communication errors or display corruption, reduce the clock frequency to 1 MHz and verify your SPI wiring for proper signal integrity, as long cable runs or poor connections may require lower speeds.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Adafruit 4086 2.13 inch Tri-Color eInk \/ ePaper Display with SRAM - Red Black White Online in India\u003c\/h2\u003e\n\n\u003cp\u003ePurchase the Adafruit 4086 2.13 inch Tri-Color eInk \/ ePaper Display with SRAM - Red Black White online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Adafruit 4086 2.13 inch Tri-Color eInk \/ ePaper Display with SRAM - Red Black White with fast shipping and expert support.\u003c\/p\u003e\n\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":43856882827427,"sku":"TES-EV00082675","price":2572.62,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/Ada_204086-01-228x228.jpg?v=1704282250","url":"https:\/\/www.theengineerstore.in\/zh-hant\/products\/adafruit-4086-2-13-inch-tri-color-eink-epaper-display-with-sram-red-black-white","provider":"The Engineer Store","version":"1.0","type":"link"}