CircuitSage reads any component datasheet and writes your register init code — for ESP32, STM32, Arduino, or Zephyr. No hallucinations. No guessing. Just working code.
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Built by an embedded engineer who got tired of reading 200-page PDFs
A new sensor. A 180-page datasheet. Buried register tables, contradictory notes, and a reference code example that's clearly wrong. You've been here before. Every new component is a research project.
GPT-4 confidently gives you register values. You flash the firmware. Nothing works. The values were hallucinated. Generic AI has no concept of a register map, a timing constraint, or a voltage rail. Your hardware paid the price.
STM32 HAL is 40,000 lines. ESP-IDF examples are outdated. Arduino libraries don't expose what you actually need. You're back to reading the datasheet anyway — just angrier.
Type a part number. CircuitSage finds and fetches the official datasheet automatically. No PDF hunting. No Octopart tabs. Just the component name.
We parse the actual register map — not a summary, not a description. Every address, every bit field, every constraint. Structured, queryable, reliable.
Choose your platform: ESP32-IDF, STM32 HAL, Arduino, or Zephyr. Get code written for your exact toolchain — not a generic C snippet you still have to port.
Every generated value carries a confidence score and a datasheet page citation. If CircuitSage isn't sure, it tells you. Your hardware should never be collateral damage.
Type 'BME280', 'MPU6050', or 'W25Q128' — or upload a PDF. CircuitSage handles the rest.
'Give me I2C init code for STM32 at 400kHz' or 'What's the max SPI clock speed at 3.3V?' — natural language, precise answers.
Get production-ready init code with inline comments citing exact datasheet pages. Flash it. It works.
CircuitSage is in private beta. Early access users get free unlimited usage during beta + direct influence on what we build next.
No credit card. No commitment. Just early access.
Yes — this is our core design constraint. Every register value is extracted directly from the parsed datasheet, not generated by an LLM from memory. We cite the source page on every value. If confidence is below threshold, we flag it explicitly instead of guessing.
Launch targets are ESP32 (ESP-IDF), STM32 (HAL), Arduino, and Zephyr. More platforms are on the roadmap — tell us what you need.
Sensors (temp, IMU, pressure, humidity), memory (flash, EEPROM), displays, ADCs/DACs, and communication modules. More categories added based on user demand.
Yes. You can upload any PDF. For popular components, we auto-fetch the official datasheet so you don't have to.
Free and unlimited during private beta. Paid plans will be introduced after launch — early waitlist users get extended free access.
Private beta in 4–6 weeks. Join the waitlist to get access on day one.