So I just bought an Aaton XTR Prod, and wanted to try some time-lapse photography. I didn't particularly want to pay hundreds of dollars to buy or rent an intervalometer... so I'm working on building one myself. As it turns out, it's actually very simple!   Here's a video of the prototype I just got working on the bench. (excuse the awful cinematography :)   The core components are an Arduino ($25), which acts as the programmable brain, a Lemo2 connector ($10 on e