The best lamp I found, suited for wall mount, was conforming IP44. Obviously, this is not sufficient: it will be continuously exposed to harsh weather conditions (sun, rain, snow, frost, hail) during long periods (possibly days). Very short examination showed that rain can accumulate into the border of the solar panel's frame, and water will eventually seep into the panel. Also, continuous alternation of sun and rain/ice will lead the plastic case to become brittle and surely to eventually crack. I'm not an expert in this area, but I think it needed to get turned from IP44 to IP44W...
Then, I saw a very big plastic salad bowl, that would perfectly fit as a protective cap above the lamp. All this (plus the fact that my mum was urging me to improve the path visibility at night) was more than reason enough to start a new DIY project, so I decided to buy the lamp, the bowl, and a galvanized pole.
Step 1: The Lamp
- LED panel, 80 LEDs, totaling 6W
- PIR and sunlight detector, to detect beings at night
- Solar panel, with a surface largely surpassing these ridiculously small solar garden lights
- IP44 plastic case
- Three potentiometers to set: Night light threshold, lighting intensity, and lighting duration