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The week on the bench · Monday to Sunday, UTC

Week 38, 2026 · 14 to 20 September

8 entries published: 2 tools, 1 build, 1 Magic Smoke, 2 guides, 2 news. This page lists what was published; it is not a newsletter issue.

The week as a scope trace

Mon 14Tue 15Wed 16Thu 17Fri 18Sat 19Sun 20Tools2BB-0209, Tool: platformio.mcp: PlatformIO build, flash and serial tools for coding agents. Wed 16 Sep, 19:38 UTC. 1 point.BB-0211, Tool: C64U Antigravity Bridge: an agent writes and runs code on real Commodore 64 hardware. Sun 20 Sep, 14:27 UTC. 1 point.Builds1BB-0210, Build: mmRISC-2: Claude Code designs a 64-bit RISC-V core that boots Linux on an Arty A7. Fri 18 Sep, 15:41 UTC. 9 points.Magic Smoke1BB-0207, Magic Smoke: LLMs confidently lie about your microcontroller: board details that broke generated code. Wed 16 Sep, 10:40 UTC. 1 point.Guides2BB-0205, Guide: JLCPCB documents GPT-6 Astra designing a TPA3116D2 amplifier board in KiCad. Mon 14 Sep, 17:00 UTC. 1 point.BB-0206, Guide: Using AI agents in VS Code to build, test and debug STM32 firmware. Mon 14 Sep, 18:45 UTC. 1 point.News2BB-0204, News: Open-source toolkit for agent-driven RHEED during thin-film growth. Mon 14 Sep, 13:30 UTC. 1 point.BB-0208, News: Lattice Prompt connects coding agents to the Radiant FPGA toolchain over MCP. Wed 16 Sep, 13:30 UTC. 1 point.Discussions0

One channel per kind, one pulse per entry at the hour it was published. Taller pulses have more points.

Build of the week · BB-0210

mmRISC-2: Claude Code designs a 64-bit RISC-V core that boots Linux on an Arty A7

Munetomo Maruyama had Claude Code design mmRISC-2, a 64-bit RV64GC RISC-V core, and brought it up on a Digilent Arty A7-100T. Claude wrote the specification, SystemVerilog RTL, testbenches and documents; Maruyama ran Vivado and the board. Bring-up logs in the repository record Linux 7.2 booting to a shell at 50 MHz and a 120-minute stress test passing.

Shown workingBy munetomo-maruyama · github.com · Fri 18 Sep, 15:41 UTC

Tools2

All tools

  1. 39 d ago

    ToolBB-0211github.com4 starsPython

    C64U Antigravity Bridge: an agent writes and runs code on real Commodore 64 hardware

    C64U Antigravity Bridge connects Google Antigravity and other coding agents to a Commodore 64 Ultimate or Ultimate 64 through the machine's REST and DMA interface. The agent writes 6502 assembly or Python, which the bridge compiles and pushes into RAM, then reads back screen memory, color RAM and registers. The README shows no photos or captures of a run.

    Claimed

  2. 43 d ago

    ToolBB-0209github.com5 starsPython

    platformio.mcp: PlatformIO build, flash and serial tools for coding agents

    platformio.mcp exposes PlatformIO to coding agents as 40 MCP tools in a Python server. Besides builds and serial or OTA flashing, it decodes ESP32 and Cortex-M crash backtraces, reads core dumps, checks partition tables and runs GDB sessions. Its flash-and-verify tool reads the boot log until an expected line or a crash appears. The README shows no board captures.

    Claimed

Builds1

All builds

  1. 41 d ago

    BuildBB-0210github.comBuild of the week

    mmRISC-2: Claude Code designs a 64-bit RISC-V core that boots Linux on an Arty A7

    Munetomo Maruyama had Claude Code design mmRISC-2, a 64-bit RV64GC RISC-V core, and brought it up on a Digilent Arty A7-100T. Claude wrote the specification, SystemVerilog RTL, testbenches and documents; Maruyama ran Vivado and the board. Bring-up logs in the repository record Linux 7.2 booting to a shell at 50 MHz and a 120-minute stress test passing.

    Shown working

Magic Smoke1

All Magic Smoke

  1. 43 d ago

    Magic SmokeBB-0207dev.to

    LLMs confidently lie about your microcontroller: board details that broke generated code

    In a dev.to post, an embedded developer lists board facts that broke LLM-written firmware after it compiled and flashed. An ST7789 panel needed a 34-pixel offset. A Waveshare ESP32-C6 board shares SPI lines between its display and SD card, and ESP32 ADC2 stops working while Wi-Fi is on. The author's answer is mcu-skills, Claude Code skills for 8 boards.

    Claimed

Guides2

All guides

  1. 45 d ago

    GuideBB-0206youtube.com

    Using AI agents in VS Code to build, test and debug STM32 firmware

    Tech-AD-venture's 23-minute video walks through using AI agents in VS Code for STM32 firmware, contrasting autocomplete with task-based agents. Tools covered include GitHub Copilot, Claude, Codex and PlatformIO. An STM32 RTOS example runs from requirement to review. Its description lists MCP hardware access as a possibility; we could not confirm on-board debugging in the video.

    Claimed

News2

All news

  1. 43 d ago

    NewsBB-0208businesswire.com

    Lattice Prompt connects coding agents to the Radiant FPGA toolchain over MCP

    Lattice Semiconductor released Lattice Prompt, a free MCP link between agentic IDEs such as Claude Code or Cursor and its Radiant FPGA software. Lattice says an agent can run simulation, synthesis, place and route, timing analysis and bitstream generation from plain-language requests, grounded in its datasheets. The 16 September release reports productivity gains of 10x or more without a benchmark.

    Claimed

  2. 45 d ago

    NewsBB-0204arxiv.org

    Open-source toolkit for agent-driven RHEED during thin-film growth

    Asraful Haque and colleagues released an open-source toolkit for agent-driven RHEED (reflection high-energy electron diffraction) on a pulsed laser deposition system. It adds programmable electron-optics control, automatic beam alignment and rocking-curve capture, with analysis served over MCP. The paper describes a demo driven by natural-language requests. We found no code link.

    Claimed