Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Dec. 31, 2021	Mar. 31, 2021
Current assets:
Cash and cash equivalents	$ 1,172,677	$ 1,546,950
Accounts receivable, net of allowance for doubtful accounts of $675,000 and $50,000 at December 31, 2021 and March 31, 2021, respectively	567,880	1,153,684
Inventories	354,036	227,234
Prepaid expenses and other current assets	91,655	47,039
Total current assets	2,186,248	2,974,907
Other Assets:
Property and equipment, net of accumulated depreciation of $202,387 and $181,289 at December 31, 2021 and March 31, 2021, respectively	1,173	22,271
Operating lease right-of-use asset, net of accumulated depreciation of $287,358 and $225,781 at December 31, 2021 and March 31, 2021, respectively	533,662	595,240
Accounts receivable - long-term portion	109,981	139,496
Accounts receivable-related party, net of allowance for doubtful accounts of $250,000 at December 31, 2021 and March 31, 2021	80,090	80,090
Inventories - long-term portion	211,634	211,634
Intangible assets, net of accumulated amortization of $19,031 and $16,871 at December 31, 2021 and March 31, 2021, respectively	16,763	18,923
Other assets	90,538	90,538
Deferred tax asset	1,244,000	1,081,000
Total other assets	2,287,841	2,239,192
Total assets	4,474,089	5,214,099
Current liabilities:
PPP loan	5,321	288,257
Line of credit	253,503	226,413
Warrant liability	182,161	0
Operating lease liability-current	74,321	71,591
Accounts payable	357,460	364,305
Accrued expenses and other current liabilities	112,418	130,384
Customer deposits	283,004	293,638
Due to stockholder	64,636	89,391
Total current liabilities	1,332,824	1,463,979
Long-term liabilities
PPP loan, net of current liabilities	12,738	425,285
Operating lease liability	510,522	566,609
Total long-term liabilities	523,260	991,894
Total liabilities	1,856,084	2,455,873
Stockholders' equity:
Preferred stock, $.01 par value; 5,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.0005 par value; 150,000,000 shares authorized, 67,588,504 shares issued and outstanding	33,794	33,794
Additional paid-in capital	33,311,672	33,311,672
Accumulated deficit	(30,727,461)	(30,587,240)
Total stockholders' equity	2,618,005	2,758,226
Total liabilities and stockholders' equity	$ 4,474,089	$ 5,214,099