Summary of significant accounting policies (Details - Cumulative translation adjustments)	9 Months Ended
Sep. 30, 2026 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Beginning balance	$ 3,470
Ending balance	24,348
Rotor Lab [Member]
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Foreign currency translation adjustment related to Rotor Lab	$ 20,878

Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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+ Details