 This video is sponsored by PCBway. Hi guys, a few weeks ago I developed a project about energy harvesting. The goal was to develop a small weather station that would be powered by small and low power solar panels. Also for this first prototype I only used some components I already had in the lab, knowing that I would compromise the energy efficiency of the device itself, but just want to develop a first prototype to test the solar panels. Here I made a mistake, because I should have to solder the solar panels first and then the other components, because the solar panels cannot be soldered with an hot gun. Mistakes happen and that's ok, let's move on. So after uploading the firmware I performed some energy efficiency test. As you can see in idle mode with wifi the power consumption is around 32 mA and in deep sleep mode the power consumption is around 44 mA. For sure it can be done better. I also designed a very simple enclosure for this tiny PCB. Solar panels recharge the battery only if they are facing the sunlight at the right angle. The problem can be solved in two ways. The first is by replacing the solar panels and the second is by modifying the battery charging circuit so the battery manager. And what do you think about this prototype? Maybe it's time to switch to another mic controller such as an RF. Thank you guys for watching this video until the end and see you next time.