Categories: James Davis
As part of our work disseminating technology, we purchased 20 Raspberry Pis for delivery to Ghana. They were intialized and setup with a standalone version of the community site. There were a few things to learn:
- The Application contexts as there were, were downloaded using HTTrack
- Then, because of problems doing automated loading of file content, the pages were linked to an intermediate page containing instructions.
- You need HDMI to connect to RPis the first time (although after the OS is installed you can switch to VGA)
- HDMI screens are very uncommon in the US, but we found that about a quarter of all projectors take HDMI and we could start the Pis with those.
- One pi was shipped with a damaged SD card latch, but that was easily fixed with some tape.
- We hadn’t realized that Raspian had grown to a whopping 3.7gbs, and so barely fit on our mircoSD cards.
- To fix this we uninstalled scratch and sonic-pi freeing enough space to make the cards feasible.
- We were able to hook up to the internet to install our material by bridging the ports on our computer.
- After some testing we found that epiphany worked about as well as chromium and decided to use that.
- Finally we were able to improve the overall speed of C-Snap on the Pis, which was originally abysmal, by changing the refresh interval to 1/10ms, and not taking up the complete screen.