Seeed's reTerminal E1003: A 10.3-inch ePaper dashboard that transforms home automation

At a glance:

• Seeed's reTerminal E1003 is a 10.3-inch ePaper display with ESP32-S3, perfect for Home Assistant dashboards
• Features include 16 grayscale levels, temperature/humidity sensors, and an optional aluminum frame
• While ESPHome support is still in development, community drivers make it usable today

The reTerminal E1003: A Premium ePaper Display for Home Automation

Adam Conway, Lead Technical Editor at XDA, has been exploring various options for Home Assistant dashboards, from tablets to old Android phones and ESP32 displays. However, his latest project with Seeed's reTerminal E1003 has proven to be the most impressive solution yet. This 10.3-inch monochrome ePaper display, built around an ESP32-S3, offers a unique advantage over traditional LCD displays: it only consumes power when content actually changes, making it ideal for always-visible dashboards.

The reTerminal E1003 stands out in the ePaper market with its 1872x1404 pixel resolution and 16 levels of grayscale, which provides superior contrast compared to cheaper 1-bit panels that only offer black or white. Conway notes that the larger size allows for more comprehensive dashboards, such as his 3D printer monitoring interface that displays temperatures, fan speeds, print progress, and AMS filament slots all on one page without feeling cramped. This represents a significant improvement over his previous setup using a smaller CYD display.

Hardware Design and Build Quality

The optional aluminum frame is a key differentiator that elevates the reTerminal E1003 from a simple display to a premium piece of hardware. Conway describes the installation process as straightforward: removing metal springs and unscrewing the back of the frame, sliding in the reTerminal E1003, and reassembling. The frame's symmetrical design allows for both portrait and landscape orientations, and its aluminum construction provides a substantial feel that plastic enclosures lack.

Beyond the display itself, the reTerminal E1003 impresses with its generous specifications. It includes 32MB of flash storage, 8MB of PSRAM, and a microSD slot for expansion. Conway notes this provides ample headroom for cached image dashboards or plugin-based setups without requiring memory management. The device also features an integrated temperature and humidity sensor that can publish environmental data back to Home Assistant, a buzzer for audible alerts, and a PDM microphone that can be activated following Seeed's published schematics.

Software Experience: ESPHome and Beyond

While the hardware is impressive, Conway encountered some software challenges when setting up the reTerminal E1003 with ESPHome. Official support is still in development, requiring some community involvement to get the display working. Seeed has been transparent about this, noting that ESPHome compatibility and an open-source touch library are both in progress. Conway had to reverse-engineer the firmware to identify the touchscreen controller as a GT911, which ESPHome already supports natively.

The good news is that the community has already created solutions. Conway used the Seeed 10.3-inch IT8951 ESPHome drivers as an external component to handle the display controller and SPI pipeline. After correctly configuring the VCOM voltage, the display functioned properly. The touchscreen required additional work, including wiring the I2C bus to the correct pins and enabling the gt911 platform. Despite these efforts, Conway noted that refresh performance could be improved, with configuration updates taking up to 15 seconds to render.

Practical Applications: 3D Printer Monitoring

Conway created a comprehensive 3D printer monitoring system using the reTerminal E1003, pulling in print progress, temperatures, fan speeds, AMS slots, and other data across multiple pages. Unlike his previous setup with a 2.8-inch ESP32 CYD display that required tab navigation, the larger E1003 allows all information to be displayed simultaneously. He has published the YAML configuration on GitHub for others to reference.

While the monochrome display lacks the color and instant-update capability of LCDs, Conway argues that ePaper is ideal for dashboards that need to be visible for extended periods. The technology minimizes distractions while surfacing useful information at a glance. For his 3D printer monitoring, this has proven incredibly valuable in daily workflows, providing real-time information without the eye strain of traditional displays.

Alternative Software Solutions

For users who prefer not to work with ESPHome directly, Seeed offers SenseCraft HMI, a no-code platform that comes pre-installed on the device. Users can simply log in, drag widgets onto a canvas, and push the result to the panel. While not as flexible as custom layouts, it provides a working dashboard with zero code. Users can also serve their own data to SenseCraft HMI, though touch interactions aren't yet exposed through the editor.

Another option is TRMNL, a plugin-based e-paper dashboard service that is compatible with the reTerminal E1003 out of the box. By pointing the panel to a TRMNL account, users can access various plugins from calendar views to stock tickers without touching ESPHome. Conway notes that with ESPHome support from Seeed in the pipeline and ongoing SenseCraft HMI updates, the software experience will only improve in the coming weeks.

The Future of Home Assistant Displays

Conway concludes that while the reTerminal E1003 isn't yet plug-and-play for the average user, the hardware is excellent and the aluminum frame adds significant premium value. The only limitation is the software, which Conway believes will be resolved soon based on Seeed's track record. For those comfortable with some technical setup, the device already offers tremendous value as a Home Assistant display.

The reTerminal E1003 represents a significant step forward in ePaper displays for home automation, combining a large, high-resolution panel with powerful hardware and thoughtful design. As software support continues to improve, it has the potential to become the go-to solution for anyone looking to create a dedicated, always-visible dashboard for their smart home or specialized monitoring needs.