Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash	$ 383,000	$ 257,000
Accounts receivable, net	675,000	1,161,000
Inventories, net	3,328,000	3,652,000
Prepaid expenses and other current assets	549,000	780,000
Total current assets	4,935,000	5,850,000
Non-current assets:
Property, plant and equipment, net	269,000	311,000
Right-of-use asset, net	709,000	799,000
Other assets	101,000	101,000
Total non-current assets	1,079,000	1,211,000
TOTAL ASSETS	6,014,000	7,061,000
Current liabilities:
Accounts payable and accrued expenses	2,210,000	2,333,000
Derivative liability	406,000	629,000
Lease liabilities	385,000	373,000
Deferred revenue	471,000	148,000
Total current liabilities	4,217,000	4,783,000
Non-current liabilities:
Notes payable, net of current portion	1,115,000	150,000
Lease liabilities, net of current portion	327,000	428,000
Total non-current liabilities	1,442,000	578,000
Total liabilities	5,659,000	5,361,000
Commitments and Contingencies
Stockholders' equity:
Common stock ($0.001 par value); 500,000,000 shares authorized; 224,112,168 and 219,163,631 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	224,000	219,000
Additional paid-in capital	7,968,000	7,928,000
Accumulated deficit	(7,837,000)	(6,447,000)
Total stockholders' equity	355,000	1,700,000
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	6,014,000	7,061,000
Series A Preferred Stock [Member]
Stockholders' equity:
Preferred stock	0	0
Series B Preferred Stock [Member]
Stockholders' equity:
Preferred stock	0	0
Nonrelated Party [Member]
Current liabilities:
Note payable	445,000	1,000,000
Related Party [Member]
Current liabilities:
Note payable	$ 300,000	$ 300,000