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A December 2022 blog report documented the setup of the $8 Ox64, a three-core RISC-V board intended to run Linux. The author got a boot-stage message over a serial connection after working around several flashing-tool problems, but said Ethernet, Wi-Fi and SD-card support were not working and had not yet demonstrated a Linux boot in the first post.
A December 2022 hands-on report described getting an $8 Ox64 RISC-V board to send its first boot-stage messages to a computer, while stopping short of showing Linux running. The account matters because it captures both the promise and the early limitations of an unusually low-cost Linux-capable board: the author said Ethernet, Wi-Fi and SD-card support were not working at the time, and getting firmware onto the device required a serial bridge and software workarounds.
The report, published by The Little Engineer That Could, identified the Ox64 as a board built around the Bouffalo Lab BL808, a RISC-V chip with three different cores. The author characterized it as a device that looks like a microcontroller but could behave more like a Unix machine. The post did not provide independent testing or establish that every advertised capability was working; its account was a first-person setup report.
Programming the board proved more involved than connecting it as a USB development board. The author said firmware had to be sent over UART TX/RX pins. Bouffalo Lab’s Dev Cube tool reportedly crashed on launch in the author’s Ubuntu Wayland environment. A CH340G USB-to-serial adapter also failed to complete the handshake, so the author instead used an Adafruit KB2040, an RP2040-based board, as a serial bridge.
Even then, Dev Cube could not flash the Ox64 in the author’s setup. The report says the author switched to bflb-mcu-tool and edited its UART interface code to remove DTR and RTS handling. After flashing a low-load BL808 M0 binary, the board printed messages including “dynamic memory init success” and “E907 start.” That was evidence of communication and an early firmware stage—not proof that the full Linux operating system had booted.
Low Cost, High Setup Burden
The report illustrates the trade-off behind a board priced at $8: a low purchase price does not necessarily mean a ready-to-use Linux computer. For readers experimenting with RISC-V, the Ox64 offered an inexpensive way to investigate a multi-core chip and its software stack, but the initial path involved serial wiring, a second microcontroller, a command-line flashing tool and a code modification.
The distinction between an initial firmware message and a working Linux system is important for anyone considering the board. The post established that the author could flash a component and receive output; it did not establish that everyday functions such as networking, storage, or a complete operating system were available. The account is most useful as an early snapshot of development friction, rather than evidence of a finished, broadly usable computer.
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From Microcontroller Board to Linux
The Ox64 was presented in the report as a very low-cost entry point to RISC-V computing. RISC-V is an open instruction-set architecture used in processors from multiple designers. The board’s BL808 chip contains three heterogeneous cores, described in the post as capable RISC-V cores, although the report’s practical test focused on flashing an early boot component rather than demonstrating software across all three.
The author’s sequence also shows why early board support can matter as much as hardware specifications. The initial post documented problems with the graphical flashing utility, the serial adapter handshake and the command-line tool’s modem-control signals. The author ended by saying additional firmware for the D0 core and the operating system still had to be flashed, and pointed readers to a later Part 2. The supplied source material does not include that follow-up’s findings.
Linux Boot Still Unverified
The supplied first-post material does not show the Ox64 booting into Linux, nor does it establish whether the author later completed that step. The author said more firmware needed to be loaded, including something for the D0 core, before flashing the operating system. The source links to Part 2, but its content and outcome are not provided here.
The report also does not establish the board’s general availability, whether its stated price included shipping or accessories, or whether the cited failures affected all Ox64 boards and software configurations. The networking and SD-card limitations are explicitly tied to the time of writing and the author’s setup; they should not be treated as a current status report.
The Follow-Up Must Show the Boot
The next milestone described by the author was to flash the remaining firmware and then try loading the operating system. The post directs readers to a later Part 2, which is the relevant follow-up for determining whether that effort succeeded. Without its contents, a completed Linux boot, working storage, and network connectivity remain unconfirmed by the material available here.
For readers evaluating the 2022 report, the key distinction is between what it records and what it anticipates: the author achieved a serial connection and saw firmware messages, then said the Linux attempt was still ahead. Any claim about the board’s later capabilities requires evidence beyond this initial account.
Key Questions
Did the $8 Ox64 run Linux in the report?
Not in the supplied first post. The author reported serial output after flashing an early BL808 M0 binary, but said more firmware and the operating system still needed to be loaded.
What processor was in the Ox64?
The report identifies the board’s chip as the Bouffalo Lab BL808, with three different RISC-V cores.
What features were unavailable at the time?
The author said Ethernet, Wi-Fi and SD-card support were not working in the setup described in the December 2022 post.
Why was setup difficult?
The author reported needing UART wiring rather than USB programming, encountering a crash in Dev Cube under Ubuntu Wayland, failing to connect with a CH340G adapter, and modifying bflb-mcu-tool after switching to an RP2040 serial bridge.
Does the source say whether the later attempt succeeded?
The first post links to a Part 2, but the supplied material does not include its results. A successful Linux boot cannot be confirmed from this source alone.
