Thanks to Steve Fennimore (UC Davis Cooperative Extension Weed Specialist) for sharing the following. "These inventors in India made a smart weeder with a smart phone. There is hope for low-cost smart weeders!" https://youtu.
From the EurekAlert! website :: Cambridge University Press :: Aug. 1, 2022 Researchers from the University of Missouri recently conducted two field studies to explore the effectiveness of electricity in weed control.
There have been significant developments in automated weeder technology in the past several years. A quick perusal of automated weeders on YouTube reveals many machines developed in diverse parts of the world.