Note 10 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Sep. 29, 2018	Sep. 30, 2017
Inventory differences	$ 1,206,040	$ 1,668,529
Net operating losses	1,554,615	2,287,412
Deferred revenue	568,917	187,970
Stock based compensation	116,149	218,846
Tax credits	374,239	247,989
Other	173,128	300,630
Total	3,993,088	4,911,376
Less: valuation allowance	(3,993,088)	(4,911,376)
Total

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

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