I think that cell phones are probably a little easier to get in some of these countries than solar panels, although I am not sure, tekochip. I imagine they also are on "pay as you go" services, not service plans. But as I said, I don't know for sure. I just would think it might be hard for someone to purchase a solar panel. I live in southwest Portugal and even here I would find it hard to get one; I'd have to go online and have it delivered. And the mail in Portugal is quite bad and sometimes I don't get packages or have trouble receiving deliveries, so I can't imagine what it might be like in a truly impoverished place.
What's surprising to me is that the potential customers can afford to purchase a cell phone and service but apparently can't purchase a small solar panel to charge the phone themselves. I just checked eBay and a typical panel is about $5. The solar idea is great, I just don't understand why they need a guy to pedal it.
Elizabeth, mobile device charging via text SMS is a good option. But for a full battery charge how many SMS will required, moreover in most of the countries SMS are also chargeable. Whats the mode of contact between these type of charging point and devices & whether it economical.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.