Note 7 - Convertible Promissory Note (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

Convertible Debt [Table Text Block]

	Maturity Date	Stated Interest Rate			Conversion Price		Face Value		Debt Discount/ Premium			Carrying Value
December 31, 2023	1/31/2024		24	%	$	0.79	$	397,000	$	19,000		$	416,000
December 31, 2022	7/31/2023		24	%	$	6.30	$	1,000,000	$	(38,000	)	$	962,000

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	January 2023			March 2023			July 2023			December 2023
Conversion price before	$	6.30		$	2.87		$	2.65		$	1.07
Conversion price after	$	2.87		$	2.65		$	1.07		$	0.79
Term (years)		0.09			0.78			0.42			0.05
Volatility		167	%		168.9	%		156.8	%		71.6	%
Dividend rate		0	%		0	%		0	%		0	%
Risk free rate		4.46	%		4.20	%		4.22	%		4.30

Convertible Debt [Member]

Notes Tables

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	March 2023			December 2023
Conversion price before	$	2.87		$	1.07
Conversion price after	$	2.65		$	0.79
Term (years)		0.36			0.14
Volatility		182	%		96.3
Dividend rate		0	%		0	%
Risk free rate		4.20	%		4.30	%