Note 10 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)	Sep. 28, 2019	Sep. 29, 2018
Inventory differences	$ 1,209,239	$ 1,206,040
Net operating losses	1,945,238	1,554,615
Deferred revenue		568,917
Stock based compensation	123,658	116,149
Tax credits	520,176	374,239
Other	142,021	173,128
Total	3,940,332	3,993,088
Less: valuation allowance	(3,940,332)	(3,993,088)
Total

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

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