Statements of Cash Flows - USD ($)	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows provided by (used in) operating activities:
Net (loss)	$ (691,783)	$ (323,945)
Adjustments to reconcile net (loss) income to net cash (used in) operating activities:
Depreciation and amortization	85,218	86,906
Stock-based compensation expense related to stock options	53,552	51,892
Provision for inventory obsolescence	12,000	15,000
Change in operating assets and liabilities:
Right of use asset, net	68,710	(42,912)
Accounts receivable	29,592	26,902
Inventories	484,866	(329,881)
Prepaid expenses and other assets	6,728	(8,294)
Accounts payable	93,092	(323,423)
Accrued compensation and other accrued liabilities	2,414	(13,730)
Net cash provided by (used in) operating activities	144,389	(861,485)
Cash flows (used in) investing activities:
Acquisition of property and equipment	(12,050)	(173,269)
Patent costs	(24,773)	(10,030)
Net cash (used in) investing activities	(36,823)	(183,299)
Cash flows provided by (used in) financing activities:
Borrowings from (paydown of) credit facility, net change	(20,717)	239,752
Borrowings from (paydown of) secured notes	(203,473)	23,353
Net proceeds (payments) from exercise of stock options	(29,833)	21,000
Net cash provided by (used in) financing activities	(254,023)	284,105
Net (decrease) in cash	(146,457)	(760,679)
Cash, beginning of fiscal year	188,966	949,645
Cash, end of fiscal year	42,509	188,966
Supplemental disclosures of cash flow information:
Cash paid during the year for interest	$ 62,373	$ 19,529