When HN users recommended it
1 HN user recommended this in 2017, in one comment.
20072026
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
1 HN user recommended this in 2017, in one comment.
Each tall tick is one HN user's first recommendation. A short tick is the same user again. Click a tick to jump to the comment.
These already exist as self-contained kits: https://www.amazon.com/dp/B00GV3XRDW/ref=asc_df_B00D5RVMAM50...
What I think would be interesting is to use a relay to fall back to grid power once the battery dies.