Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net loss	$ (2,854,053)	$ (3,985,024)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property, plant and equipment	38,344	97,392
Stock-based compensation, net	314,642	435,608
Equity in loss of investee company	15,946	50,025
Provision for inventory reserve	57,265	54,928
Gain on sale of property, plant and equipment	(11,124)	(70,000)
Interest accreted on note receivable	0	(3,024)
Impairment of long-lived assets	0	447,000
Changes in assets and liabilities
Accounts receivable	197,505	265,250
Inventories	(324,294)	84,523
Costs and estimated earnings in excess of billings	(335,575)	(504,873)
Prepaids and other current assets	447,250	(151,826)
Accounts payable	(264,343)	1,003,940
Billings in excess of costs and estimated earnings	81,963	(331,603)
Accrued expenses	(175,958)	(184,366)
Deferred revenue	172,422	0
Net cash used in operating activities	(2,640,010)	(2,792,050)
Cash flows from investing activities
Expenditures for property and equipment	(75,430)	0
Proceeds from sale of property, plant and equipment	11,124	70,000
Payments from note receivable	0	6,000
Net cash provided by (used in) investing activities	(64,306)	76,000
Cash flows from financing activities
Repayments of long term debt	0	(84,348)
Net proceeds from issuance of common stock	2,701,569	119,459
Contribution of capital from noncontrolling interest	0	1,956
Net cash provided by financing activities	2,701,569	37,067
Net decrease in cash and cash equivalents	(2,747)	(2,678,983)
Cash and cash equivalents - beginning of period	2,984,532	11,782,962
Cash and cash equivalents - end of period	2,981,785	9,103,979
Supplemental disclosures of cash flow information:
Cash paid for interest	2,559	11,452
Supplemental noncash information:
Right of use asset obtained in exchange for new operating lease	$ (75,629)	$ (19,467)