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Trade and other receivables - Schedule of trade and other receivables (Details) - CAD ($)
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2019
Trade and other receivables [abstract]        
Trade receivables $ 114,877 $ 0 $ 210,795 $ 1,191
Unbilled revenue 8,881 308,728 0  
Sales tax recoverable 48,124 183,761 142,797 55,684
Investment tax credits refundable 0 206,762 127,325 162,928
Total $ 171,882 $ 699,251 $ 480,917 $ 219,803