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EEVblog/121GW-Multimeter-Firmware-RE

Can I trust it?

Worth a closer look before you use it.

  • Warnings Check

    Very new: it was created 2 days ago. Wait a little before installing it.

  • Stars from real accounts No data

    We haven't checked its stars for fakes yet.

  • Active OK

    Last change 2 days ago.

  • Licence OK

    MIT: you can use it for free, also in a commercial product. Keep the licence notice.

Quick checks from public data. They help, but they are no guarantee.

What it is

Reverse-engineered C source of the EEVblog 121GW multimeter firmware v2.05 and its SD-card bootloader, built with GCC and CMake. Equivalence with the original is checked in emulation, and the build is tested on the meter.

Who it's for

Embedded developers and hobbyists working on the EEVblog 121GW multimeter or STM32L1 firmware

How to use it

Install

cmake -G Ninja -S firmware -B build/firmware

From its README. Check it there before running it.

Ask your AI to set it up

Paste this into Claude, ChatGPT or your coding assistant.

Help me install and set up EEVblog/121GW-Multimeter-Firmware-RE in my project. Follow its README: https://github.com/EEVblog/121GW-Multimeter-Firmware-RE. Explain each step and check it is safe before running anything.

Star curve

35From 0 to 35 stars between 3 Nov 2026 and 5 Nov 2026.

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