| How a small solar panel can recharge a smartphone through the USB plug:
| How a small solar panel can recharge a smartphone through the USB plug:
| This is the story of a Christmas gift for my father...He always like old things and nixies must be good for him. Like many people, I like th...
| I'm currently developing a device (which I will propose later here) and I use several sensors connected by remote RF to the main equipme...
| For many of us, air pollution is a daily problem.People are talking about the level of the pm2.5 before going out or before doing sport.Livi...
| I build this bench 2 years ago. I wanted to know if my device (a mobile phone) was charging well the battery.So, I took a standard battery,...
| By doing many mountain bike by hot weather (where I live), to carry a camel bag (or equivalent) is very common.During a trip, I was always f...
| Many of us want to receive regularly a picture of a place, which can be a beach for activity, a second house, a place in mountain for hiking...