01
Product-ready electronics
Schematics, PCB layout, component selection, BOM cleanup, connector strategy, panelization support, and design choices made with assembly, sourcing, test access, and field reliability in mind.
Complete-system electrical engineering
Embedded products, engineered end to end.
From schematic and PCB design to firmware, fixtures, validation, and production support — I help turn product intent into measured, working reality.
Circuit to productionDesign decisions stay tied to build, test, and field behavior.
Hardware + firmwareElectrical behavior and embedded code get debugged as one system.
Proof over guessesMeasurements, fixtures, and evidence close the loop.
Where I fit
When the problem crosses the drawing, the code, and the bench.
I fit best where a product is too real for a clean handoff: hardware behavior, firmware timing, fixture assumptions, production constraints, and user-visible symptoms are all tangled together. I keep the full technical thread intact until the path forward is measurable.
About Daniel Nebert
I’m the engineer you call when the whole product has to make sense.
I’m an electrical design engineer focused on complete-system embedded product development: schematics, PCB design, firmware, fixtures, validation, production support, and field troubleshooting.
My edge is range with discipline. I can follow a problem from a circuit node to a firmware state, from a fixture assumption to a production failure, or from a vague field symptom back to the measurement that proves what is actually happening.
I’m hands-on with the physical reality around the design: boards, wiring, fixtures, measurements, tools, scripts, and the documentation needed to make decisions defensible.
Before engineering, I served in the military. That shows up in how I work: stay calm, separate assumptions from evidence, communicate clearly, and keep moving toward a useful result.
Where I create leverage
The best fit is not routine drafting. It is messy embedded-product work where one missing connection can stall the whole build.
✓
The prototype works, but nobody trusts it yet.I turn bench success into repeatable evidence: controlled bring-up, measurements, fixture checks, and pass/fail criteria.
✓
Power, timing, or firmware behavior is hiding the real issue.I trace the failure across regulators, current paths, GPIO states, timing assumptions, firmware logic, and real duty cycle.
✓
The product is stuck between specialists.I connect schematic intent, embedded code, physical build, test access, BOM quality, and production handoff without losing the thread.
✓
The remaining work is unowned.If progress needs a fixture, script, adapter, board inspection, supplier file, or contributor handoff, I step across the boundary and close the gap.
What I bring
Electrical design depth, embedded firmware fluency, and the systems judgment to keep product work moving when the issue crosses boundaries.
02
Firmware that respects the hardware
ESP32, AVR/ATmega, BLE products, low-power sleep behavior, RTC-based timing, peripheral drivers, production diagnostics, and code structured around real electrical behavior.
03
System-level troubleshooting
Signal-path tracing, failure-mode thinking, dependency mapping, substitution tests, measured troubleshooting, and closed-loop validation before parts or code get blamed.
04
Hands-on technical breadth
Test fixtures, bench wiring, mechanical realities, hand and power tools, scripts, documentation, supplier handoff, and coordination with other technical contributors when the work needs more than a narrow specialist.
Why it works
The signal does not stop at the schematic.
The value is continuity: design intent stays connected to board behavior, firmware decisions, fixture strategy, production evidence, and the people who have to trust the result.
Built for bring-upTest access, connector breakouts, diagnostics, fixture strategy, and acceptance criteria are designed in early enough to matter.
Debugged as a systemSchematic, scope, firmware logs, BLE behavior, CAD/BOM data, physical fixtures, and product behavior stay in the same conversation.
Documented for trustResults are measured, repeatable, and clear enough to support production, handoff, and later engineering decisions.
Principles that make products easier to trust.
SOLID thinking is usually taught as software design. I use the same discipline across embedded products: clear responsibilities, clean interfaces, replaceable assumptions, and testable boundaries.
SOLID
SOLID below the software layer
Circuits, firmware modules, fixtures, and tests should each have a clear job, a clean boundary, and a reason to exist.
DFT
Design for testability
Test pads, diagnostics, fixtures, known states, and acceptance criteria belong in the design conversation before bring-up gets expensive.
I/F
Interface-first thinking
Signals, connectors, commands, APIs, timing, power assumptions, and expected behavior get defined before the system becomes tangled.
OBS
Observability
If a product cannot show what state it is in, it cannot be trusted in development, production, or support.
LCHC
Low coupling, high cohesion
Hardware, firmware, fixtures, and production tests should be connected by intent, not tangled by accident.
SUB
Substitution as proof
Replace the unknown with known-good behavior. Emulate the input. Force the state. Prove one boundary at a time.
FMEA
Failure-mode thinking
Good engineering asks how the system fails, how we will know, and what evidence proves the fix.
LIFE
Lifecycle continuity
Design intent stays connected from schematic to firmware to fixture to production support, instead of being lost at each handoff.
EV
Evidence-first engineering
No guessing. No part-swapping theater. Measure the behavior, isolate the boundary, and verify the result.
Hardware roots · systems reach
I keep the whole product in view.
I think in interfaces, dependencies, constraints, failure modes, and evidence. That lets me move from a customer-facing symptom down through electronics, firmware, mechanical assumptions, fixture build, tooling, test process, and production workflow without losing the real objective.
I turn ambiguity into a test plan.Vague reports become knowns, unknowns, measurements, controlled changes, and verification criteria.
I use encapsulation and substitution.Define the boundary, substitute known-good behavior, emulate inputs, and prove one interface at a time.
I connect hardware to firmware.Current draw, timing, GPIO states, BLE behavior, diagnostics, and visible product behavior are treated as one system.
I push through to a defensible result.The fix has to be repeatable, documented, and strong enough for production or the next engineer to trust.
How I solve hard product problems
Measure what matters. Prove the boundary. Keep moving.
Most product problems do not stay politely inside one discipline. A firmware symptom may be power. A production failure may be a fixture assumption. A board change may become a field-support decision. I keep those connections visible until the cause is proven.
Reduce the unknownsI break vague symptoms into signals, states, interfaces, assumptions, and measurements that can be tested.
Encapsulate and substituteI isolate one layer, substitute known-good behavior, emulate inputs, and prove each boundary before moving on.
Verify before calling it doneThe result has to be repeatable, documented, and defensible enough for production, support, or the next engineer.
Operating method
A clean discipline for turning complex embedded-product problems into decisions.
Define the system boundary.Identify what is inside the problem, what is outside it, and which interface needs to be proven first.
Separate knowns from assumptions.Keep measurements, observations, requirements, and guesses visibly separate so the debug path stays defensible.
Substitute known-good behavior.Emulate inputs, bypass uncertain layers, or force controlled states so one boundary can be tested at a time.
Measure one variable at a time.Make changes small enough that the result teaches something instead of creating a new mystery.
Take on the unowned work.If progress needs a fixture, script, measurement setup, hand-built adapter, contributor handoff, or documentation cleanup, I do not wait for the problem to fit a narrower job description.
Leave evidence the next person can trust.Document what was verified, what remains unknown, and how to repeat the result.
Engineering range
Concrete places where electrical design, firmware, fixtures, and production discipline turn into product value.
Battery-powered embedded devices
Low-power products where service life depends on the whole design: sleep-current budget, regulator quiescent current, wake sources, peripheral shutdown, firmware state, and measured battery draw.
Sleep-current budgetWake-source designPower-state firmwareMeasured battery draw
Production test and board bring-up
Bring-up and test workflows that connect schematic intent to measurable board behavior: fixture strategy, firmware diagnostics, signal verification, and pass/fail criteria.
Fixture strategyFirmware diagnosticsSignal verificationPass/fail criteria
BLE-connected embedded controls
Connected-device systems where GATT design, command routing, connection lifecycle, diagnostics, and hardware abstraction have to remain testable after the first successful connection.
GATT designCommand routingConnection lifecycleHardware abstraction
Engineering automation and CAD/BOM cleanup
Engineering workflow cleanup that makes design data easier to build from: BOM normalization, CAD/CAM handoff, panelization support, firmware tooling, and scripted checks.
BOM normalizationCAD/CAM handoffPanelizationScripted checks
How the work turns into value
Public-safe examples of how messy product risk becomes a clear engineering path.
Low-power device architecture
SituationA battery-powered product needed long service life, but success depended on hardware leakage, regulator current, wake behavior, firmware state, and measured duty cycle.
ActionI decomposed the product into power states, current paths, wake sources, peripheral behavior, and firmware responsibilities.
ValueThe battery-life discussion became measurable and testable instead of speculative.
Intermittent embedded failure
SituationA visible product symptom could have come from firmware logic, board behavior, timing, power, or the way the test was being run.
ActionI isolated boundaries, substituted known-good behavior, and verified one signal path or state transition at a time.
ValueThe team gets a defensible cause, not a pile of guesses and part swaps.
Prototype to production path
SituationA design worked on the bench but needed stronger evidence before it could be built, tested, and supported repeatedly.
ActionI connected schematic intent, firmware diagnostics, test access, BOM quality, fixture strategy, and acceptance criteria.
Value“It worked once” becomes a repeatable build and test path.
Unowned task recovery
SituationProgress stalls because the remaining work crosses disciplines: electronics, firmware, fixture build, documentation, supplier handoff, or outside contributor coordination.
ActionI step across the boundary, do or coordinate the needed work, and keep the evidence trail connected to the product goal.
ValueThe project keeps moving instead of waiting for a perfect handoff between narrow specialties.
Representative wins
The common thread: make the system understandable, measurable, and buildable.
01
Low-power product architecture
Translated a long-service-interval product requirement into a low-power embedded architecture involving sleep-current budgeting, wake-source control, state retention, and component-level current analysis.
02
Connected-device behavior
Separated connection behavior from product-specific hardware behavior so commands, diagnostics, and device actions could be tested and reasoned about independently.
03
Legacy embedded system recovery
Reconstructed and stabilized embedded behavior from hardware observations, UI references, input/output mapping, configuration defaults, and measured device behavior.
04
Production-ready validation
Built test and bring-up thinking into the product path so “it works” became repeatable evidence: fixture checks, firmware diagnostics, acceptance criteria, and hardware-visible verification.
05
Manufacturing handoff discipline
Improved the handoff between design and production through BOM cleanup, CAD/CAM preparation, panelization support, and supplier-consumable documentation.
06
Systems-analysis debug method
Applied encapsulation and substitution to complex product failures: isolate the boundary, substitute known-good behavior, test one variable, and verify the result before moving on.
07
Cross-discipline execution
Kept work moving across electrical design, firmware, physical fixture building, tooling, documentation, and consultant coordination when the next task did not belong cleanly to one specialty.
Available for select consulting, prototyping, and design-review work
Need the full product thread pulled tight?
If the issue crosses hardware, firmware, fixtures, production, or handoff, I can help turn it into measurements, decisions, and a path forward.
Past the comfort zone
When the problem goes deeper, I keep going.
Hardware, firmware, fixtures, tooling, people, production, and evidence stay connected until there is a path forward.