Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jul. 02, 2023	Jul. 03, 2022	Jul. 02, 2023	Jul. 03, 2022
Revenue		$ 2,921	$ 4,541	$ 7,054	$ 8,637
Cost of revenue		1,718	1,997	3,461	3,632
Gross profit		1,203	2,544	3,593	5,005
Operating expenses:
Research and development		1,505	1,190	3,134	2,523
Selling, general and administrative		1,924	1,981	3,785	4,118
Total operating expenses		3,429	3,171	6,919	6,641
Loss from operations		(2,226)	(627)	(3,326)	(1,636)
Interest expense		(50)	(22)	(108)	(55)
Interest income and other expense, net		0	142	(63)	19
Loss before income taxes		(2,276)	(507)	(3,497)	(1,672)
Provision for (benefit from) income tax		(7)	17	0	16
Net loss		$ (2,269)	$ (524)	$ (3,497)	$ (1,688)
Net loss per share:
Basic and diluted (in dollars per share)	[1]	$ (0.17)	$ (0.04)	$ (0.26)	$ (0.14)
Weighted average shares outstanding:
Basic and diluted (in shares)		13,709	12,412	13,297	12,269

[1] Net loss equals comprehensive loss for all periods presented.