Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Cash flows used in operating activities:
Net loss	$ (4,070,457)	$ (2,538,500)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	229,423	130,727
Amortization of right-of-use assets	39,409	45,805
Amortization of debt issuance costs	15,188	17,605
Amortization of sales contract costs		9,605
Stock based compensation	123,500	562,875
Provision for accounts receivable allowances	71,379	9,714
Provision for inventory reserves		40,266
Changes in operating assets and liabilities:
Accounts receivable	(507,733)	(331,313)
Inventories	2,648,710	2,505,790
Prepaid expenses and other current assets	(81,248)	(53,489)
Other assets	8,410	17,778
Accounts payable	2,498,991	(4,179,887)
Accrued expenses	288,307	(600,100)
Deferred revenue	121,401	97,276
Operating lease liabilities	(39,409)	(46,208)
Net cash provided by (used in) operating activities	1,345,871	(4,312,056)
Cash flows from investing activities:
Purchases of equipment	(6,330)	(115,103)
Certification costs capitalized	(122,120)	(156,300)
Net cash used in investing activities	(128,450)	(271,403)
Cash flows from financing activities:
Net proceeds from the bank credit line	945,441	1,989,222
Repayment of government loan		(26,506)
Proceeds from stock option exercises		99,169
Net cash provided by financing activities	945,441	2,061,885
Net increase (decrease) in cash and cash equivalents	271,980	(2,521,574)
Cash, cash equivalents, and restricted cash - Beginning	1,030,110	13,070,445	$ 13,070,445
Cash, cash equivalents, and restricted cash - Ending	1,302,090	10,548,871	1,030,110
Cash paid during the period for:
Interest	103,950	78,331
Income taxes		6,000
Cash is reported on the condensed consolidated statements of cash flows as follows:
Cash and cash equivalents	802,090	10,048,871	530,110
Restricted cash	500,000	500,000	$ 500,000
Total cash, cash equivalents and restricted cash	$ 1,302,090	$ 10,548,871