Is it really free to start?

Yes. You get 150 credits per month with no credit card required. That's roughly 15 datasheet analyses or 7 BOM generations per month.

What's the difference between Pro and Free?

Free gives 150 credits/month — plenty to try every tool. Pro unlocks 1,000 credits, commercial use rights, and priority processing. Students with a .edu email qualify for 500 credits at a discounted rate. See the Pricing page for a full side-by-side breakdown.

Can I export my results?

Yes. BOM Generator exports to CSV and EDA formats (KiCad netlist, Altium CSV, Eagle XML). Code Generator lets you download generated source files. Full project ZIP bundles — code + BOM + notes in one file — are coming soon.

How many tools are included?

CircuitSage ships 10+ tools today: Datasheet AI, Code Generator, BOM Generator, Fault Detector, Component Finder, Error Explainer, PLC Logic, 30+ Engineering Calculators, Unit Converter, and more launching every month.

How does the AI work?

Each tool uses specialized AI models selected for accuracy on that specific task — datasheet analysis, code generation, fault detection, and more. Model details are kept internal to ensure we can always use the best available technology.

How accurate is the AI output?

Very high for common tasks. Always verify safety-critical specs against original datasheets. The AI includes confidence indicators and flags uncertainty.

Can I use it for commercial projects?

Yes. Generated code and BOMs are yours to use freely. Pro plan is recommended for professional workloads.

What file types can I upload?

PDF datasheets, circuit photos (JPEG/PNG/WebP), and screenshots of error messages. Vision models can read schematics and breadboard layouts.

Do credits roll over?

No — each month starts fresh. Emergency credits ($1.99 for +100) never expire and stack across purchases.

Yes. Uploaded files are processed in memory and never stored long-term. We don't use your datasheets or designs to train any AI models.

⚡ Purpose-built for Electrical Engineers — not a generic chatbot

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Faster with AI

9 specialized AI tools for EE work — datasheets, code, BOM with live pricing, fault diagnosis, PLC logic and more. Free to start, Pro unlocks 1,000 credits every month.

Start Free — 150 credits/month View Pricing →

AI Tools

Free Credits/Month

Private Processing

Calculators

How It Works

From idea to output in seconds

STEP 01

Describe or Upload

Type your project idea, paste an error, or upload a datasheet PDF. No special format needed.

STEP 02

AI Processes

Advanced AI analyzes your input — cross-referencing specs, libraries, and engineering best practices.

STEP 03

Get Results

Receive structured output: code with wiring, BOM with prices, fault diagnosis with multimeter steps.

See It In Action

Every tool, purpose-built

Drag or click the cards to explore all 9 tools.

LIVEDatasheet AI

Code Generator

BOM Generator

Calculators

Unit Converter

Datasheet AI

Upload any PDF datasheet and get instant, structured answers about pinouts, specs, and register maps.

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9 Specialized Tools

Everything an EE Needs

Each tool is purpose-built for a specific engineering task. No generic chatbot — specialized AI per workflow.

Datasheet AI

Instant component insights

10 credits / use

Code Generator

Firmware & embedded code

20 credits / use

BOM Generator

Auto bill of materials

Find alternatives fast

Ladder logic generator

20 credits / use

Calculators

Engineering math, free

FREE

Unit Converter

Units & conversions, free

FREE

Real EE workflows

How engineers use CircuitSage

Concrete scenarios — one tool, one task, one outcome. Tap any card to jump straight into the tool.

Datasheet AIEmbedded engineer

Need a specific register on page 47 of a 90-page datasheet.

Paste the PDF, ask the question, get the exact spec with page citation.

BOM GeneratorEE student

Lab project due, no idea which resistor values to order.

Describe the circuit — get a Mouser/DigiKey BOM with live prices in seconds.

PLC LogicAutomation engineer

Conveyor control with start/stop, E-stop, and overload protection.

Structured Text generated with the E-stop rung first and safety interlocks wired in.

Code GeneratorFirmware developer

ESP32 weather station — needs MQTT, sensor library, and wiring.

Full sketch with libraries, pin map, and a testing checklist.

Component FinderPCB designer

MOSFET out of stock during a production run.

Pin-compatible alternatives with stock levels and spec deltas in one query.

Fault DetectorRobotics engineer

Motor driver keeps blowing — can't find the issue on the bench.

Photo of the circuit + symptom description → likely cause with multimeter test points.

Datasheet AIEmbedded engineer

Need a specific register on page 47 of a 90-page datasheet.

Paste the PDF, ask the question, get the exact spec with page citation.

BOM GeneratorEE student

Lab project due, no idea which resistor values to order.

Describe the circuit — get a Mouser/DigiKey BOM with live prices in seconds.

PLC LogicAutomation engineer

Conveyor control with start/stop, E-stop, and overload protection.

Structured Text generated with the E-stop rung first and safety interlocks wired in.

Code GeneratorFirmware developer

ESP32 weather station — needs MQTT, sensor library, and wiring.

Full sketch with libraries, pin map, and a testing checklist.

Component FinderPCB designer

MOSFET out of stock during a production run.

Pin-compatible alternatives with stock levels and spec deltas in one query.

Fault DetectorRobotics engineer

Motor driver keeps blowing — can't find the issue on the bench.

Photo of the circuit + symptom description → likely cause with multimeter test points.

Code GeneratorIoT developer

STM32 project needs FreeRTOS tasks with clear separation.

Production-shaped task code with meaningful comments — not filler.

Datasheet AIElectronics technician

Pin configuration lookups eating an hour every day.

Pinout extracted from any datasheet in seconds — back to building.

CalculatorsPower electronics student

Switching between Ohm's law, filter design, and ripple voltage.

30+ EE calculators in one place — no more browser-tab juggling during lab.

BOM GeneratorFreelance hardware designer

Client deliverable: BOM with sourcing links by EOD.

BOM with Mouser/DigiKey links in minutes — turns half a day of work into ten minutes.

PLC LogicControls integrator

First-time generation of Ladder Logic for a new line.

Brand-specific addressing (Siemens, AB, Omron) — runs in the simulator with no edits.

Error ExplainerEE student, finals week

Cryptic GCC linker error blocking a thesis project at 2am.

Plain-English explanation + the specific include or library fix.

Code GeneratorIoT developer

STM32 project needs FreeRTOS tasks with clear separation.

Production-shaped task code with meaningful comments — not filler.

Datasheet AIElectronics technician

Pin configuration lookups eating an hour every day.

Pinout extracted from any datasheet in seconds — back to building.

CalculatorsPower electronics student

Switching between Ohm's law, filter design, and ripple voltage.

30+ EE calculators in one place — no more browser-tab juggling during lab.

BOM GeneratorFreelance hardware designer

Client deliverable: BOM with sourcing links by EOD.

BOM with Mouser/DigiKey links in minutes — turns half a day of work into ten minutes.

PLC LogicControls integrator

First-time generation of Ladder Logic for a new line.

Brand-specific addressing (Siemens, AB, Omron) — runs in the simulator with no edits.

Error ExplainerEE student, finals week

Cryptic GCC linker error blocking a thesis project at 2am.

Plain-English explanation + the specific include or library fix.

Roadmap

What's next on the roadmap

The 9 core tools are already live above. Here's what we just shipped and what's coming next.

Just Shipped

Last 30 days

RAG Datasheet CorpusNew

Answers cited from real indexed datasheets — no hallucinated specs

Live BOM PricingNew

Real-time prices, RoHS & lifecycle badges from distributor inventory

EDA ExportsNew

KiCad netlist + BOM, Altium CSV, Eagle XML — one ZIP from every BOM

Coming Soon

1–3 months

Datasheet Library

Save & re-access analyzed datasheets

Project Export

Download code + BOM + notes as ZIP

Schematic ReviewerNew Tool

Upload schematic, AI flags mistakes

Pinout VisualizerNew Tool

Visual pin diagrams from datasheets

In Development

3–6 months

Wiring Diagram GeneratorNew Tool

Describe circuit → professional diagram

Power Budget AnalyzerNew Tool

Power draw, battery life & regulator fit

Datasheet ComparatorNew Tool

Side-by-side spec table for any parts

Team Workspaces

Share projects and BOMs with your team

Planned

6+ months

Firmware Debugger ProNew Tool

Code + serial output → full debug session

API Access

Integrate CircuitSage into your own tools

Photo-to-Component IDNew Tool

Snap a photo, AI identifies it instantly

Mobile App

Full CircuitSage on iOS & Android

Pricing

Plans at a Glance

No hidden fees. Cancel anytime.

Free

150 credits/mo

~15 analyses per month

Student

$4.99/mo

500 credits/mo

Requires university email

Frequently Asked Questions

Community

Join the CircuitSage Discord

Connect with EEs, share projects, get help, and shape the roadmap.

Join Server

⚡

Start building faster today

150 free credits every month. No credit card. No setup. Just paste your first component name and go.

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|Faster with AI