CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
OPERATING ACTIVITIES
Net loss	$ (1,509,974)	$ (2,016,843)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	286,559	302,277
Loss on disposal of assets	0	25,427
Loss on investment	11,143	44,999
Amortization of right-of-use asset	266,676	327,287
Stock-based compensation expense	74,279	196,254
Changes in operating assets and liabilities:
Accounts receivable	38,409	11,662
Inventories	(22,911)	(153,951)
Prepaid expenses and vendor deposits	(28,687)	34,893
Contract assets	0	14,400
Other assets	4,197	320
Accounts payable	119,686	9,526
Accrued expenses	(15,747)	(322,140)
Contract liabilities	(5,437)	(275,249)
Lease liability	(229,098)	(288,850)
NET CASH USED IN OPERATING ACTIVITIES	(1,010,905)	(2,089,988)
INVESTING ACTIVITIES
Collection of note receivable	9,991	87,154
Purchases of property and equipment	(24,663)	(4,584)
Purchases of patent	(89,415)	(25,000)
NET CASH USED IN INVESTING ACTIVITIES	(104,087)	57,570
FINANCING ACTIVITIES
Proceeds from line of credit	0	131,540
Principal payments on loan payable	736,680	(117,763)
NET CASH USED IN FINANCING ACTIVITIES	736,680	13,777
NET DECREASE IN CASH, CASH EQUIVALENT AND RESTRICTED CASH	(378,312)	(2,018,641)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - BEGINNING OF PERIOD	3,525,415	7,061,253
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - END OF PERIOD	3,147,103	5,042,612
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest	$ 69,520	$ 69,220