I had been considering doing something similar in Ghana. I thought about it for a few weeks and kept coming back to teaching. Teaching programming in particul

I had been considering doing something similar in Ghana. I thought about it for a few weeks and kept coming back to teaching. Teaching programming in particular probably wouldn't be very useful, but teaching basic computer skills definitely would be. If you worked with a small town (provided they had access to reliable power), you could probably have a measurable impact on the local economy. That is really the only way I could sustain myself in such a situation- by being able to see the good I'm doing to a whole community.