thank you for this great project. We have finished building the sandbox and configured the PC. Unfortunately, we cannot calibrate our Epson EB-585Wi projector as shown in the video from 10:10. So we want to buy a new one.
The BenQ MX631ST is no longer available. So we are asking you for help. Do you know of a suitable model for a maximum of €600?
I’ve used a BenQ MW632ST for years and its been very reliable. You can buy them used on Ebay for cheap but I’m not sure if it’s what you need without knowing more about your project. What projector you should choose is really dependant the design of your sandbox structure.