Have you ever wanted to know how many watts or how much current an item uses or even its operating voltage? This simple and easy project can provide you with that crucial information while keeping costs under $7. I primarily designed this to be used in conjunction with common solar charge controllers, that don't have any indication of load power draw. Since making it, I realized it would also be useful on my homemade bench power supply. The fact that you can program a small bitmap image into it is just a bonus and makes you feel great every time you look at it.