TRMNL OG (7.5″) E-Ink Dashboard Review: A Focused, Battery-Powered Family Status Board

There are a lot of ways to put information on a wall. You can mount an old iPad, you can build a Home Assistant dashboard, or you can buy a smart display. All of them work. All of them glow. However, all of them need to stay plugged in.

TRMNL takes a different approach.

The TRMNL OG is a 7.5″ e-ink dashboard display designed to show curated, glanceable information without becoming another screen competing for your attention. It isn’t a tablet, and it isn’t touch-based. It’s more like a focused status terminal for your life.

I’ve been testing the OG model in our kitchen, and so far, it’s doing something very specific — and doing it well.

What TRMNL Is (and What It’s Not)

The TRMNL OG uses a 7.5″ monochrome e-ink display with a resolution of 800×400 pixels. No backlight glow. No color animations. Just crisp black-and-white information that updates on a schedule you define. It’s only 5.8 ounces and it comes standard with a 1800 mAh battery, but it has an upgrade option of a 2500 mAh battery.

It’s powered by an internal battery and connects via Wi-Fi. You configure it through a web dashboard and install “plugins” that determine what appears on the screen. These plugins include calendars, weather, stocks, RSS feeds, sports league standings, Home Assistant dashboards, and more.

What it is not:

• It’s not interactive.
• It’s not a general-purpose display.
• It’s not meant for constant real-time updates.

It’s designed to be glanceable and intentionable

That design philosophy is the whole point.

Setup Experience

Adding it to my Wi-Fi network was straightforward. Boot it up, connect to its temporary Wi-Fi network, and it redirects you to a configuration page to enter your credentials.

One detail I appreciated immediately: it shows you the MAC address before you connect it to your network. That allowed me to proactively create a static lease. I wish more companies did this.

After connecting, the screen displays a URL (usetrmnl.com/signup) and a “Friendly ID.” You create an account, enter that ID, and the device attaches to your TRMNL account dashboard.

From there, you browse the plugin directory (trmnl.com/plugins), add what you want, and configure each plugin in your browser.

You don’t have to do a weird firmware dance. It doesn’t have an obscure pairing process. No app needed. Simple.

How I’m Using It

Right now, TRMNL is living in our kitchen. It’s augmenting our family calendar whiteboard, and it may eventually replace it. The primary plugin I’m running is Google Calendar. It displays our family schedule: sports, doctor appointments, and activities. I also added NBA League standings community plugin for fun.

Each plugin refreshes hourly. That cadence works well for this use case. This isn’t stock trading or server monitoring. Honestly, they probably don’t need to update that often.

The key benefit is this: my kids have the family calendar on their phones, but they don’t look at it. Now the schedule is simply there. Always present in a room, they walk through multiple times a day. No more excuses for not knowing that a doctor’s appointment has been scheduled for them (well, I’m sure they’ll still have some excuse).

Performance and Battery

So far, performance has been solid.

• No Wi-Fi instability.
• Refresh feels fast enough.
• Plugin changes apply by the next scheduled refresh cycle.

The battery is still under testing, but after one week not plugged in, it only dropped to 90%. Based on that early data and an hourly refresh schedule, I expect to charge it a handful of times a year! That said, if I reduced the refresh schedules and how often it changes between plugin screens, it might even last much longer.

That’s a key differentiator. Unlike a wall-mounted tablet or smart display, TRMNL doesn’t have to live near an outlet. I can mount it where it makes sense, not where power is available. That leads to cleaner installs and more flexibility. In fact, it has a depression in the back made for hanging it on a wall.

If battery longevity holds up under longer testing, this may be the product’s most compelling advantage.

Plugin Ecosystem and Extensibility

The plugin directory is where TRMNL becomes interesting.

Out of the box, you can install:

• Google Calendar
• Weather
• Stocks
• RSS feeds
• League standings
• Various productivity tools

I’m just getting started, but I’m especially interested in exploring the Home Assistant plugin. If that works well, this could become a clean, low-power status dashboard for home metrics.

The company’s philosophy appears to lean toward open systems and extensibility. By default, it relies on TRMNL’s cloud infrastructure, but you can bring your own server (BYOS) and run it from your own local network. You will lose access to the pre-built plugins, but you can build your own.

You can also build your own plugins.

How It Compares to Other Options

I haven’t run a tablet-in-kiosk-mode setup for this specific use case, but the trade-offs are clear.

A tablet:

• Needs to stay plugged in.
• Has a glowing backlit screen.
• Runs a full OS.
• Consumes more power.
• Feels more like “another device.”

TRMNL:

• Runs on battery.
• Uses e-ink.
• Updates on a schedule.
• Feels purpose-built.
• Can live cleanly on a wall without visible cables.

It’s simpler and more constrained than something like Google Nest Hub. But that constraint, along with customizeability, are design advantages.

Is It Worth the Price?

It’s a little on the expensive side, there’s no denying that. At the time of writing this article, it was $139. But it’s also unique. And it works well.

If all you want is a cheap digital calendar, there are lower-cost options. If you value:

• Battery-powered flexibility
• E-ink readability
• Minimalist distraction-free design
• An extensible plugin ecosystem

…then TRMNL occupies a niche that isn’t crowded.

There is also a larger model, which, at the time of writing this article, was only available for pre-order, but it is probably easier on the eyes, at 10.3″ and 1872×1404 resolution. It also comes with a much bigger battery – 6000 or 12000 mAh. I’d choose this model if it were available.

Who This Is For

TRMNL makes sense for:

• Families who want a passive, visible calendar.
• Productivity-focused households.
• Smart home enthusiasts who want a low-power dashboard.
• Anyone who wants a glanceable context without another glowing screen.

It’s not for someone who wants rich interactivity or high-frequency updates.

It’s a status board, not a control panel.

Final Thoughts

TRMNL doesn’t try to do everything.

It does one thing: display curated information, quietly, reliably, and without distraction. In a world where most devices demand your attention, that restraint is refreshing.

For our family, the kitchen calendar alone may justify it. And if the Home Assistant integration delivers, this could become a permanent part of our home’s information system. I’ll continue testing battery life and deeper integrations, but so far, it’s off to a strong start.