Source: https://mokxi.com/parts/ssd1680 Updated: 2026-11-10 Part # E-paper display, SSD1680 2.13 inch 250x122 black and white e-paper over SPI. Seconds to refresh, and it keeps the picture with no power. See every part - 8 pins - In 1 project Drawn live by the editor's own code, at the size you see it. At a glance ## The E-paper display, SSD1680 2.13 inch in brief What it is, and where it sits on the bench. The SSD1680 drives the 2.13 inch 250x122 black and white e-paper modules from WeAct and Waveshare, panel DEPG0213BN. Its eight pins are VCC, GND, SDA, SCL, CS, DC, RES and BUSY, where SDA and SCL are write-only SPI data and clock, and it runs from 3.3 V. On an Uno, SDA goes to 11 and SCL to 13 with the other four on free pins; on an ESP32, 23 and 18. Mokxi models the command set: the black and white RAM (0x24, 1 is white), the second RAM (0x26) that holds the old picture for a partial refresh, the RAM window and data entry modes, 0x22 and 0x20 to run an update, and deep sleep (0x10) that only a reset on RES ends. BUSY stays high for 2 s through a full refresh and 0.4 s through a partial one, the glass changes only when a refresh finishes, and it keeps its picture with the power off. The classic mistake is a whole-panel GxEPD2 buffer on an Uno, 4000 bytes, which is why the badge draws in pages. The flashing, ghosting, temperature and reads are not modeled. Family Displays Pins 8 Pins ## 8 pins Named as the editor names them, so a wire lands where you expect it. Pin Role What it does VCC Input or output Supply, 3.3 V. GND Input or output Ground. SDA Input SPI data in (MOSI). It says SDA, but it is SPI. SCL Input SPI clock. CS Input Chip select, active low. DC Input Command (low) or data (high). RES Input Reset, active low. It is also the only way out of deep sleep. BUSY Output High while the controller works. Wait for it to go low before the next command. How to use it ## How to use a 2.13 inch e-paper display with an Arduino VCC goes to the Uno’s 3.3 V pin, not 5 V. SDA is SPI data, to pin 11, and SCL the clock, to 13; then CS to 10, DC to 9, RES to 8 and BUSY to 7. GxEPD2_213_BN takes those last four in that order. BUSY is how the panel says it is still refreshing, so it needs a pin of its own. The panel is 250x122, bigger than an Uno’s RAM can hold, so the name badge draws it in pages of 50 rows inside a firstPage() and do { } while (nextPage()) loop. The full refresh takes about two seconds; the button swaps the bottom line with setPartialWindow(), in 0.4 s. hibernate() then sleeps the controller, and the picture stays. Part pin Board pin VCC 3.3 V GND GND SDA Pin 11 SCL Pin 13 CS Pin 10 DC Pin 9 RES Pin 8 BUSY Pin 7 GxEPD2_BW compiles on every board here but the ATtiny85, for the SSD1680 panels only. An ESP32 has room for the whole frame at once. Hold the button This is the simulator itself, running here. Click anything to open it in the editor. Open this project in the editor Read the full tutorial How it is modeled ## What is true about the E-paper display, SSD1680 2.13 inch, here In its help article’s own words: what the simulation gets right, and where it stops. ### Modeled The SPI commands above, both RAMs, the RAM window and the data entry modes, BUSY high through a software reset, a refresh and a power sequence, deep sleep that only a reset ends, and a picture that changes only when a refresh finishes and stays with the power off, from the SSD1680 datasheet. ### Not modeled How long a refresh takes is in the panel's waveform, not the controller's datasheet: here it is 2 s for a full refresh and 0.4 s for a partial one, the panel's typical figures. The flashing of a full refresh, ghosting after many partial ones, the temperature's effect, and the red RAM's part in the waveform are not modeled. Reads are not supported. From SSD1680 e-paper display, 2.13 inch, in full. Projects ## See the E-paper display, SSD1680 2.13 inch in a project One built-in project uses it. It opens in the editor, already wired. Boards ## The boards it is shown on This board has a built-in project with the E-paper display, SSD1680 2.13 inch in it. - Arduino Uno R3 Libraries ## Arduino libraries for the E-paper display, SSD1680 2.13 inch Built in, so the sketch compiles with nothing to install. Each page has the calls, the wiring and an example to run. - GxEPD2 More parts ## The rest of the bench Every one of these is drawn and simulated the same way. Full-size breadboard A real 0.1 inch grid with the rails and the center channel, 63 columns wide. Jumper wires Drag from any pin or hole to any other. Corners snap, and you can drag them. Power A supply rail at the voltage you choose. Ground The other end of every circuit. LED Lights when current flows. Five colors, and the brightness is what your eye would see. Filament lamp A tungsten bulb in a holder: an inrush when it is switched on cold, tens of milliseconds to warm up, and dim on half its voltage. Resistor Any value you like, with the color bands drawn to match. ESP32-C3-DevKitM-1 A RISC-V board that runs your firmware at 160 MHz on the real memory map. Pushbutton A 12 mm tactile switch. Hold it while the simulation runs. Raspberry Pi Pico The RP2040 board on our own Cortex-M0+ core. Pick a program and press Run. Raspberry Pi Pico W Raspberry Pi Pico W (RP2040). The same board and the same pinout as a Pico, with the CYW43439 on it. The WiFi is simulated (no radio; real internet through the Cloud panel’s switch), and the on-board LED, which hangs off that chip rather than off GP25, is driven through the same path. Everything else is the Pico. Raspberry Pi 4 Model B Raspberry Pi 4 Model B: the 40-pin header, driven by main.py with RPi.GPIO or gpiozero. See every part ## Wire up the E-paper display, SSD1680 2.13 inch Open the editor and push it into the breadboard. It is free, and it runs on your own machine. Start building free Open the editor