Embedded and IoT teams work under constraints most software groups never see: cross-compiled C and C++, memory budgets measured in kilobytes, and real hardware that has to be flashed and tested before anyone trusts a change. Claude Code, Anthropic's terminal-based coding agent, was built for general software work, so the question we get from Australian hardware teams is a fair one: does it actually help when the target is a microcontroller instead of a web server?
The short answer is yes, for a specific slice of the job. We've now run Claude Code against firmware repositories for an agricultural sensor client in regional Victoria and a mining telemetry team based near Perth, and the pattern holds across both. Claude Code is strong on code comprehension, refactoring, and documentation. It is not a substitute for the hardware-in-the-loop testing that embedded work ultimately depends on.
Where Claude Code genuinely helps embedded and IoT teams
Most embedded codebases are old, under-documented, and touched by whoever was available at the time rather than whoever wrote the original driver. That is exactly the kind of repository Claude Code is good at reading. Point it at a HAL layer or a bootloader and ask it to explain what a function does, and it will trace the includes, the register definitions, and the call graph faster than a new engineer could in their first week. That alone changes onboarding time for a junior firmware hire from months to weeks.
Reviewing driver and HAL code for buffer overruns, off-by-one register writes, and unchecked return values before it reaches a board.
Writing unit tests and mocks for hardware abstraction layers, so logic can be tested on a laptop before it ever touches silicon.
Parsing and documenting communication protocols such as MQTT, CoAP, and Modbus, including generating client stubs from a datasheet or spec PDF.
Cross-referencing register maps against vendor datasheets to catch mismatched addresses or bit-field errors.
Generating and maintaining README files, changelogs, and onboarding notes that firmware teams almost never have time to write themselves.
None of this replaces an oscilloscope or a logic analyser, and it should not. What it does is remove the grinding, error-prone reading work that happens before an engineer ever picks up a probe. A Melbourne-based team we work with cut code review turnaround on a Zephyr RTOS driver update from two days to under four hours by running Claude Code as a first pass before a human sign-off, not instead of one.
Where it does not fit
Claude Code cannot validate timing on real silicon, cannot see interrupt jitter, and cannot replace a hardware-in-the-loop test rig. Anything safety-critical, such as implantable medical device firmware, an automotive braking controller, or a mine-site gas sensor, still needs the same certification, static analysis tooling, and physical test coverage it needed before. Treat Claude Code as a second reviewer that reads faster than a human, not as a substitute for the compliance process.
Data governance also needs a deliberate setup, not an assumption. Embedded and IoT firmware often touches telemetry that counts as personal information once it is linked to an individual, a wearable health device or a smart-home sensor being the obvious cases, so any code or logs shared with Claude Code need the same handling a firm would apply under the Privacy Act 1988. For a defence-adjacent or air-gapped project, that usually means running the review pass on de-identified code snippets rather than the full repository, and keeping the coding agent off networks that need to stay isolated.
Rolling it out on an Australian embedded team
The rollout that works best is narrow and specific. Start with one repository, usually the driver or protocol layer with the worst documentation, and run Claude Code as a review and test-generation tool for two to three weeks before deciding whether to extend it further. A five-person embedded team can run this trial on Claude Code's standard seat pricing for well under $2,000 across the trial period, against the $45,000 to $60,000 it typically costs to bring in a contract firmware engineer for the same stretch of driver clean-up work.
Week 1: point Claude Code at the least-documented driver or HAL module and generate explanatory comments and a README.
Week 2: add it to code review for new pull requests, with a human sign-off required before merge.
Week 3: use it to generate unit tests and mocks for hardware interfaces that currently have none.
After the trial: decide whether to extend seats to the rest of the team or keep it scoped to one subsystem.
If your team is shipping firmware out of Sydney, Brisbane, or a regional site with patchy connectivity, the constraints are different for every project, but the shape of the rollout tends to be the same. We help embedded and IoT teams scope exactly which repositories and workflows are worth the trial, and where the compliance boundaries need to sit. If that's useful, book a short call and we will walk through your specific codebase.
