PocketMage Is a Fully Open-Source ESP32-S3 E-Ink PDA

PocketMage Conjures a Fully Open-Source E-Ink PDA From an ESP32-S3

PocketMage is exactly the kind of grassroots hardware that makes me want to clear off my workbench and start soldering. Announced by CNX Software on July 7, 2026 and picked up by Boing Boing the next day, PocketMage is a wizard-themed, fully open-source personal digital assistant built around the ESP32-S3. It pairs a crisp 3.1" E-Ink display with a physical QWERTY keyboard, runs on FreeRTOS, and just launched crowdfunding on Crowd Supply. It is a distraction-free pocket computer designed to be repaired, hacked, and genuinely owned — and every schematic is on GitHub.

Key Takeaways

• MCU: ESP32-S3 with Wi-Fi + Bluetooth, 2 MB PSRAM, 16 MB flash, plus a microSD slot.
• Dual displays: a 3.1" E-Ink primary panel (320x240) alongside a 1.8" OLED status strip (256x32).
• Battery: a 1,200 mAh LiPo rated for roughly 7 days, charged over USB-C.
• Open hardware: Apache-2.0 OSHW with full KiCad design files, priced at $185 DIY kit or $235 assembled.

What Is the PocketMage?

The PocketMage is a handheld PDA in the truest sense — a focused little slab measuring just 100 x 73 x 21.7 mm that slips into a jacket pocket. The wizard theme is charming, but the engineering underneath is what earns my respect. At its heart sits the ESP32-S3, a dual-core microcontroller with integrated Wi-Fi and Bluetooth, backed by 2 MB of PSRAM and 16 MB of onboard flash. A microSD slot handles bulk storage, so your notes and documents have room to grow.

Rounding out the platform are a real-time clock for accurate timekeeping and an FPC GPIO expansion header, which is the maker's invitation to bolt on sensors, radios, or whatever the community dreams up next.

A Thoughtful Dual-Display Setup

Two screens is a clever call. The 3.1" E-Ink panel at 320x240 is the main canvas — paper-like, glare-free, and easy on the eyes for long reading and writing sessions. Above it, a slim 1.8" OLED strip at 256x32 acts as a live status bar for menus, notifications, and quick glances without disturbing the E-Ink refresh. It is the sort of hardware division of labor that fans of our mini computer coverage will appreciate.

What Can the PocketMage Do?

Plenty, and all of it offline-first. PocketMage runs a custom FreeRTOS-based operating system that ships with a text editor, a dictionary, a terminal, and even a small app store for extending the device. Input comes from a tactile QWERTY keyboard paired with a capacitive scroll bar, so you can thumb-type a journal entry and swipe through it without ever reaching for a touchscreen.

The battery story is a highlight. A 1,200 mAh LiPo delivers roughly seven days of use between charges — a figure only E-Ink and a lean RTOS make possible — and USB-C keeps top-ups universal. This is a device built to be picked up, used, and set down for a week, not babysat on a charger.

Why Open Hardware Matters Here

This is the part I love most. PocketMage is fully open hardware under the Apache-2.0 OSHW umbrella, with its complete KiCad design files published on GitHub. That means the schematics, the board layout, and the firmware are all yours to study, modify, and rebuild. If a part fails, you can source and swap it. If you want a different keymap or a new app, the door is wide open.

It slots neatly into a growing movement of buildable, repairable ESP32 gadgets. If PocketMage speaks to you, take a look at the Open Book Touch open-source e-reader and an ESP32-S3 e-ink Game Boy handheld — the same maker spirit, expressed in different shapes.

What Does the PocketMage Cost?

Pricing is refreshingly straightforward: $185 for the DIY kit if you want the soldering adventure, or $235 for a fully assembled unit. The Crowd Supply campaign carries a $100,000 funding goal, with units expected to ship around March 2027. For an open, repairable, week-long pocket computer, that is a compelling entry point — and a reminder that the maker community still builds the tools it wishes existed.

Sources: CNX Software — July 7, 2026; Boing Boing — July 8, 2026; Liliputing — July 2026