---
source_url: "https://goodereader.com/blog/electronic-readers/open-book-touch-is-now-available-on-crowdsupply"
title: Open Book Touch is now available on Crowdsupply - Good e-Reader
mirrored_at: 2026-08-17T01:08:02.693Z
host: goodereader.com
cited_in_42a: true
mirror_canonical: "https://index.42a.ai/goodereader.com/blog/electronic-readers/open-book-touch-is-now-available-on-crowdsupply"
---

> **Original source:** https://goodereader.com/blog/electronic-readers/open-book-touch-is-now-available-on-crowdsupply

The Open Book Touch is a fully open-source, hackable e-reader designed by Oddly Specific Objects as a dedicated, DRM-free alternative to closed ecosystems like Amazon Kindle. Launched for crowdfunding on [Crowd Supply](https://www.crowdsupply.com/oddly-specific-objects/open-book-touch) at a base price of $149 USD, this buttonless device is built strictly for distraction-free reading and e-paper prototyping.

Open Book Touch is the ultimate realization of the Open Book Project, a long-standing effort to build an affordable, open-source, hackable, DIY-able e-book reader. Equipped with an ESP32-S3 microcontroller and a front-lit 4.26-inch capacitive touch e-paper display. 480×800-pixel e-paper touchscreen —it’s the most advanced open-source e-book reader yet. Moreover, at under a centimeter thin in its 3D-printable enclosure, it may be the thinnest open source e-book reader as well. The display also boasts five warm and five cool LEDs in its frontlight module, with the ESP32-S3’s native PWM capabilities, Open Book Touch allows for fine-grained dimming and color temperature control for reading in dark environments. Read all night without disrupting your night vision!

The dedication to simplicity extends to the components on the board: Open Book Touch has been distilled to its essence, all while adding features that folks have asked for for years. A dual-core ESP32-S3 MCU with support for both Wi-Fi and Bluetooth adds connectivity to both devices in your orbit and to the world at large. They have included enough flash memory—16 megabytes—to support far more complex firmware, leaving plenty of room to spare for custom fonts. We’ve added 8MB of super-fast SRAM for memory-intensive operations like parsing EPUB files. A 32.768 kHz crystal allows for accurate timestamping of files on any card you insert into the MicroSD card slot. An integrated LiPo charging circuitry and charge monitoring let you fill your battery from any USB Type-C power source.

### Core Hardware

-   -   **Processor**: ESP32-S3 dual-core LX7 microprocessor (up to 240 MHz).
    -   **Coprocessor**: Low-power Ultra-Low-Power (ULP) RISC-V coprocessor.
    -   **Flash Memory**: 16 MB onboard flash.
    -   **PSRAM**: 8 MB pseudo-static RAM.
    -   **Storage Expansion**: MicroSD card slot (supports FAT32/exFAT for local file reading).

### Display & Lighting

-   -   **Screen Size**: 4.26-inch e-paper display.
    -   **Resolution**: 480 × 800 pixels.
    -   **Touch Interface**: Capacitive touch overlay.
    -   **Frontlight**: 10 total surface-mount LEDs (5 warm white, 5 cool white).

## Connectivity & Power

-   -   **Wireless**: Wi-Fi 4 (802.11 b/g/n) and Bluetooth 5 / BLE.
    -   **Port**: USB Type-C for charging, programming, and debugging.
    -   **Battery**: 1,800 mAh Lithium Polymer (LiPo) battery.
    -   **Battery Management**: Onboard charger with a physical battery cutoff switch.

### Audio & Peripherals

-   -   **Audio Output**: 3.5 mm TRRS headphone jack (supports stereo audio).
    -   **Audio DAC**: MAX98357 I2S audio amplifier.
    -   **Expansion**: STEMMA QT / Qwiic connector for adding external I2C sensors and modules.
    -   **Clock**: Real-Time Clock (RTC) chip with a supercapacitor backup to maintain time.

![](https://goodereader.com/blog/wp-content/litespeed/avatar/c4220b691ed223f47c3559b96d68c424.jpg?ver=1786463972)

##### [Michael Kozlowski](https://goodereader.com/blog/author/michael-kozlowski)

Michael Kozlowski is the editor-in-chief at Good e-Reader and has written about audiobooks and e-readers for the past fifteen years. Newspapers and websites such as the CBC, CNET, Engadget, Huffington Post and the New York Times have picked up his articles. He Lives in Vancouver, British Columbia, Canada.