Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 1,370,296	$ 2,131,400
Adjustments to reconcile net income to cash provided by operating activities:
Share-based compensation	204,797	250,359
Depreciation and amortization	489,103	445,739
Deferred taxes	499,710	754,542
Gain on sale of property and equipment	0	(3,400)
Changes in operating assets and liabilities:
Accounts receivable – trade	(611,180)	1,092,046
Accounts receivable – other	602,477	(685,668)
Inventories	293,971	(964,299)
Prepaid expenses and other current assets	(65,107)	14,631
Accounts payable	698,221	(263,386)
Accrued expenses	254,281	(265,575)
Deferred revenue	(2,469,116)	1,045,010
Net cash provided by operating activities	1,267,453	3,551,399
Cash flows from investing activities:
Purchases of property and equipment	(718,274)	(439,772)
Proceeds from sale of property and equipment	0	3,400
Net cash used by investing activities	(718,274)	(436,372)
Cash flows from financing activities:
Proceeds from employee stock options	41,365	157,446
Payment on notes payable	(43,671)	(56,032)
Net cash provided (used) by financing activities	(2,306)	101,414
Net increase in cash and cash equivalents	546,873	3,216,441
Cash and cash equivalents at beginning of year	8,266,753	5,050,312
Cash and cash equivalents at end of year	8,813,626	8,266,753
Supplemental cash flow information:
Cash paid for income taxes	111,456	456
Cash paid for interest	5,096	7,954
Supplemental disclosures of non-cash activity:
Net exercise of stock options	$ 209,290	$ 38,333