4. STOCK-BASED COMPENSATION (Details - Stock based compensation) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Stock based compensation expense	$ 10,228	$ 6,971	$ 353,212	$ 33,028
Cost of Goods Sold [Member]
Stock based compensation expense	0	0	0	8,669
Research and Development Expenses [Member]
Stock based compensation expense	2,411	320	4,822	7,012
Selling, General and Administrative Expenses [Member]
Stock based compensation expense	$ 7,817	$ 6,651	$ 348,390	$ 17,347