Responsibility and scope
Patterndo is a perfboard design tool and learning site operated by kkim93142. The operator maintains the software and published articles. The material is not presented as manufacturer-certified training or an accredited laboratory assessment. Contact and correction requests go to [email protected].
Calculations, simulations and measurements are different
- Worked calculations state the equation, input values and units, including assumptions about supply resistance and load.
- The circuit lab runs the downloadable boards through the app’s actual engine. Raw output, verification date, source settings and rerun command are published, with checks against hand calculations and saved-board round trips.
- Material without a build or instrument record is not labeled measured, built or field-tested. Current lab values are software simulation results.
Checking original sources
Guides link to relevant manufacturer datasheets, official documentation and original textbooks. For real work, prioritize documentation for your exact manufacturer, suffix and package. A reference link does not establish that every statement or a physical circuit’s safety has been verified.
Buying guides and AI assistance
Equipment articles explain selection criteria. Products without a purchase or usage record are not presented as hands-on reviews or measured rankings; verify price and stock with the seller. AI tools may assist drafting, translation and development. AI-generated text is not treated as verified evidence; lab results are distinguished by reproducible checks.
Corrections and updates
Send the article URL, statement, exact part model and supporting document when reporting an error. The modification date changes when material is corrected. If experiment wiring or models change, output and downloads are regenerated. Adding a link or correcting wording is not treated as physical validation.