"Absolutely!! Its super easy to cut Sunpower cells once you get the hang of it. You can do it with a Dremel, laser cutter or any other number of methods. In terms of efficiency, the ones of Alibaba (now plenty available on ebay) are all genuine…"
"alibaba.com is a great place to get a very large, low-cost envelope. you can specify materials and envelope thickness with most of the manufacturers. add an Arduino-based blimp controller board, motors, props, maybe an internal…"
"Srikanth, if you are looking for a quadcopter-type, that will be tough, but not impossible and you'd definitely have to build it from scratch with a super-low disc loading. For reference at an extreme end of the scale (human-powered…"