Om Rawaley holds a small, retro-style modular PDA in his hand, showcasing its portability.

Modular Nostalgia Revived: Om Rawaley’s Pocket-Sized Open-Source PDA

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Written by Sam Johnson

2026-07-31

The late 1990s and early 2000s brought us PDAs—a beacon of concise, task-focused technology. They quietly vanished as smartphones took over, yet their simplicity wasn’t forgotten. Many now seek devices offering utility without constant digital demands.

Enter Pocketbyte, created by Om Rawaley, a unique handheld embracing open-source principles. This modern PDA serves as a compact device for gaming, note-taking, and music, all without smartphone-like intrusion. At its heart is an ESP32-S3 processor, featuring dual-core power at 240 MHz and complemented by a bright 2.8-inch IPS screen. A 1,500mAh battery charges via USB-C, offering long play and listen sessions.

Close-up view of the PDA's screen displaying a simple, minimalist interface layout.

The standout feature? Its modular input system. A magnetic pin connector allows easy swapping of controls. Available modules include a gamepad and a QWERTY keyboard, seamlessly switching functions. The open architecture invites endless possibilities, encouraging personalized module designs.

Designer at work, assembling various components of the modular PDA on a table.

On the software side, PocketbyteOS offers an App Store accessible through Wi-Fi, supporting hassle-free community app installations. Open-source enthusiasts will find the C library on GitHub under the Apache 2.0 license, ensuring development freedom. Retro-Go powers emulator support for SNES, Sega Genesis, Game Boy Color, and NES titles, with Celeste already ported. Audio playback includes MP3 and WAV formats, enhanced by a headphone jack and mono speaker.

Hand-held device with visible circuit board and detachable modules for customization.

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Collection of colorful, interchangeable PDA cases laid out neatly on a flat surface.

Storage? Up to 32GB with microSD, satisfying retro gamers and digital nomads alike. Wi-Fi and Bluetooth are integrated, enabling seamless connectivity for building diverse interactive applications within its pocket-friendly form.

Om Rawaley interacts with a prototype PDA at a tech conference booth.

Initially available to early adopters and developers, Pocketbyte entices makers, retro gaming enthusiasts, and digital minimalists seeking a straightforward, time-respecting device. It rekindles the simple utility of past devices, insisting the need for them is timeless.

Workshop setting displaying various electronic parts used for assembling PDAs.

Exploring open-source technology further, the Flipper One transforms with new features that enhance connectivity and utility.

Source: yankodesign.com

Frequently asked questions

What processor does Pocketbyte use?

Pocketbyte uses an ESP32-S3 processor, featuring dual-core power at 240 MHz.

What is the standout feature of Pocketbyte?

The standout feature is its modular input system, which includes a magnetic pin connector allowing easy swapping of controls like a gamepad and a QWERTY keyboard.

What kind of display does Pocketbyte have?

Pocketbyte features a bright 2.8-inch IPS screen.