Major Customer and Geographic Information (Details - Revenue by Geographic Region) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 599,200	$ 514,300	$ 1,191,300	$ 853,700
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	145,800	160,900	273,600	284,800
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	1,600
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	435,200	330,000	876,700	527,900
AUSTRALIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 18,200	$ 23,400	$ 41,000	$ 39,400