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Property and equipment - Schedule of changes in property and equipment (Details) - CAD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance $ 70,122 $ 903,649 $ 174,644  
Ending balance 174,644 832,481 903,649 $ 70,122
Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 110,194 1,033,676 235,517 90,004
Additions 133,930 187,478 813,792 20,190
Disposals (8,607) (3,800) (15,633) 0
Ending balance 235,517 1,217,354 1,033,676 110,194
Accumulated depreciation [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance (40,072) (130,027) (60,873) (20,737)
Depreciation for the year 29,408 257,481 79,628 19,335
Disposals (8,607) (2,635) (10,474)  
Ending balance (60,873) (384,873) (130,027) (40,072)
Computer equipment [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 13,832 41,359 26,745  
Ending balance 26,745 64,281 41,359 13,832
Computer equipment [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 14,073 59,757 32,807 0
Additions 18,734 50,849 30,778 14,073
Disposals 0 (3,800) (3,828) 0
Ending balance 32,807 106,806 59,757 14,073
Computer equipment [Member] | Accumulated depreciation [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance (241) (18,398) (6,062) 0
Depreciation for the year 5,821 26,762 13,966 241
Disposals 0 (2,635) (1,630)  
Ending balance (6,062) (42,525) (18,398) (241)
Computer software [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 2,034 0 508  
Ending balance 508 3,875 0 2,034
Computer software [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 8,145 0 8,145 8,145
Additions 0 5,129 0 0
Disposals 0 0 (8,145) 0
Ending balance 8,145 5,129 0 8,145
Computer software [Member] | Accumulated depreciation [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance (6,111) 0 (7,637) (3,396)
Depreciation for the year 1,526 1,254 508 2,715
Disposals 0 0 (8,145)  
Ending balance (7,637) (1,254) 0 (6,111)
Office furniture and equipment [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 16,638 49,752 59,549  
Ending balance 59,549 41,502 49,752 16,638
Office furniture and equipment [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 32,781 90,116 81,841 31,873
Additions 49,060 10,817 11,211 908
Disposals 0 0 (2,936) 0
Ending balance 81,841 100,933 90,116 32,781
Office furniture and equipment [Member] | Accumulated depreciation [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance (16,143) (40,364) (22,292) (9,587)
Depreciation for the year 6,149 19,067 18,759 6,556
Disposals 0 0 (687)  
Ending balance (22,292) (59,431) (40,364) (16,143)
LRIP equipment [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance   0 0  
Additions   77,559 0  
Disposals   0 0  
Ending balance 0 77,559 0  
Moulding equipment [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance   49,752    
Ending balance   70,557 49,752  
Moulding equipment [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance   0 0  
Depreciation for the year   7,002 0  
Disposals   0 0  
Ending balance 0 (7,002) 0  
R&D equipment [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 33,229 179,653 32,797  
Ending balance 32,797 155,298 179,653 33,229
R&D equipment [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 46,588 217,940 53,634 41,379
Additions 7,046 21,864 165,030 5,209
Disposals 0 0 (724) 0
Ending balance 53,634 239,804 217,940 46,588
R&D equipment [Member] | Accumulated depreciation [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance (13,359) (38,287) (20,837) (5,257)
Depreciation for the year 7,478 46,219 17,462 8,102
Disposals 0 0 (12)  
Ending balance (20,837) (84,506) (38,287) (13,359)
Leasehold improvements [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 4,389 100,703 55,045  
Ending balance 55,045 92,588 100,703 4,389
Leasehold improvements [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance 8,607 117,237 59,090 8,607
Additions 59,090 19,800 58,147 0
Disposals (8,607) 0 0 0
Ending balance 59,090 137,037 117,237 8,607
Leasehold improvements [Member] | Accumulated depreciation [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance (4,218) (16,534) (4,045) (2,497)
Depreciation for the year 8,434 27,915 12,489 1,721
Disposals (8,607) 0 0  
Ending balance (4,045) (44,449) (16,534) $ (4,218)
Sales demo equipment [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance   532,182    
Ending balance   404,380 532,182  
Sales demo equipment [Member] | Cost [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance   548,626 0  
Additions   1,460 548,626  
Disposals   0 0  
Ending balance 0 550,086 548,626  
Sales demo equipment [Member] | Accumulated depreciation [Member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Opening balance   (16,444) 0  
Depreciation for the year   129,262 16,444  
Disposals   0 0  
Ending balance $ 0 $ (145,706) $ (16,444)