Note 10 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 1,400,000
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ (918,288)	$ 801,020
Domestic Tax Authority [Member]
Open Tax Year	2015 2016 2017
Operating Loss Carryforwards, Total	$ 5,889,175
Operating Loss Carry Forward Expiration Year	2038
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	$ 245,016
Tax Credit Carry Forward Expiration Year	2038
State and Local Jurisdiction [Member]
Open Tax Year	2014 2015 2016 2017
Operating Loss Carryforwards, Total	$ 5,029,887
Operating Loss Carry Forward Expiration Year	2038
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	$ 163,136
Tax Credit Carry Forward Expiration Year	2033