Solar day lamp with PIR sensor. It’s possible to get “more bang for your buck” from the solar day lamp system by adding a fourth LED array (D) and equipping it with occupancy sensors to switch off the ...

That’s the method that he went with, and luckily the SUNNAN lamp from Ikea which he’s using as the donor for the project has just enough room to squeeze in the parts necessary for this hack.

Rechargeable solar lamp project from India in Top 12 at Enactus Race for Climate Action ... These standalone solar lamps will be sold to the target consumer group through a simple rent-to-buy system ...