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A December 2022 blog post described attempts to bring up the $8 Ox64, a RISC-V single-board computer, and reported getting serial output after several hardware and software workarounds. The post did not confirm a successful Linux boot; the author said more components still needed to be flashed and pointed readers to a later Part 2.
A December 2022 report on the $8 Ox64 RISC-V computer described getting the board to communicate with a PC after multiple programming-tool and connection problems, but it did not confirm a Linux boot. The distinction matters: the low-cost board was presented as capable of running Linux, while the reported test had reached only an early serial-output milestone.
The author said the Ox64 uses three different RISC-V cores and characterized it as more like a microcontroller in appearance but capable of behaving like a Unix machine. The post also warned that, at the time, Ethernet, Wi-Fi and the SD card were not working. It described the board as an experimental project that required technical setup rather than a ready-to-use desktop computer.
Programming was one of the main obstacles. The author said the board could not be programmed over USB in the way many hobbyist boards can; instead, the setup used its UART TX/RX pins. The report recounts a failed attempt with a CH340G USB-to-serial adapter, followed by a workaround using an Adafruit KB2040, an RP2040-based board, as a serial bridge. The author loaded that board with picoprobe and connected its pins to the Ox64’s UART lines.
The post said Bouffalo Lab’s Dev Cube flashing program crashed in the author’s Ubuntu Wayland environment. The author then tried the command-line bflb-mcu-tool, but reported needing to edit its UART interface code to remove DTR and RTS handling. After flashing a low-level BL808 firmware file, the author saw serial messages indicating memory initialization and the start of an E907 core. That output showed communication and some firmware activity—not a completed Linux startup.
A Low-Cost Board, Not a Ready PC
The report illustrates both the appeal and the limits of an $8 RISC-V board. A low entry price can make newer processor architectures accessible to hobbyists and developers, but the price alone does not establish that a board can serve as a practical computer. In this account, getting as far as serial output required extra hardware, wiring, command-line work and editing a software tool.
The distinction between hardware capability and working software is central. A board may have processor cores described as capable of running Linux while still lacking a functioning boot process, storage access or network connectivity in a particular development state. For readers considering a purchase, the report is best understood as an early bring-up diary, not a claim that the Ox64 was then a complete Linux machine.
It also gives developers concrete evidence of the sort of friction that can accompany early support for a new board: host operating-system compatibility, serial adapters, flashing utilities and firmware for multiple cores. Those barriers can be manageable for technically experienced users, but they affect how easily others can test software or reproduce results.
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What the Initial Test Achieved
The source is a personal blog post titled “The $8 Linux Computer,” published in December 2022. Its headline refers to the Ox64’s price and Linux potential, while the body focuses on the author’s attempt to get the board programmed and talking to a computer. The account is specific to that author’s equipment and software environment; it does not establish that every Ox64 unit or setup had the same problems.
The reported test used a MicroUSB connection to power the Ox64 and a separate USB connection from the KB2040 to the PC. The author flashed a low-load BL808 M0 firmware image using bflb-mcu-tool, then received messages including “dynamic memory init success” and “E907 start.” Those are the post’s reported observations. The author said additional firmware still needed to be flashed to the D0 core and that the operating system itself remained to be loaded.
The post closes by directing readers to a later installment, identified as Part 2. The material supplied for this report does not include that follow-up, so it cannot establish whether the author later completed a Linux boot or resolved the listed hardware and software limitations.
““At the time of writing, ethernet, wifi and SD-Card are not working.””
— The Ox64 report’s author
Linux Boot Still Unconfirmed
The supplied post does not show the Ox64 reaching a Linux login prompt or usable operating system. It reports serial output after flashing one low-level image and says that more firmware, including work involving the D0 core, and the OS itself still had to be installed. The post’s title and description of the board’s potential should not be treated as proof of a completed boot.
It is also unclear from this material whether the reported networking and SD-card limitations were specific to the author’s test, to the board’s software state at that time, or to a broader hardware or support issue. The report does not provide independent testing, a full compatibility assessment, or the contents and outcome of the linked Part 2. Its price and technical description are presented by the blog author, not independently verified in the supplied source.
The Follow-Up Would Settle Progress
The author pointed readers to a Part 2, suggesting that a follow-up was intended to document subsequent work. That later account would be needed to determine whether the additional core firmware and operating system were successfully flashed, and whether the board then booted Linux.
Until that information is available, the confirmed endpoint in the supplied report is limited: the author described overcoming several setup hurdles and receiving serial output from the Ox64. Readers assessing the board should check later documentation for the tested firmware, required tools, working interfaces and reproducible boot steps rather than assuming those capabilities from the initial report alone.
Key Questions
Did the report confirm that Linux ran on the Ox64?
No. The author reported serial output after flashing a low-level firmware image, then said additional firmware and the operating system still needed to be flashed.
What did the author say the Ox64 cost?
The December 2022 blog post described it as an $8 computer. The supplied material does not independently verify the price or say whether it included shipping, accessories or other costs.
What problems did the initial setup encounter?
The author reported that Dev Cube crashed in an Ubuntu Wayland environment, a CH340G adapter failed to complete the handshake, and bflb-mcu-tool needed a code change. The author used an RP2040-based KB2040 as a serial bridge.
Which features were reported as not working at the time?
The author said Ethernet, Wi-Fi and the SD card were not working when the post was written. The source does not establish whether those limitations applied to all boards or were later resolved.
What was the next step described in the post?
The author said firmware still needed to be flashed to the D0 core, followed by the operating system, and linked to a later Part 2. The outcome of those steps is not included in the supplied material.
Source: thelittleengineerthatcould.blogspot.com
