I'm at various stages of four astronomy DIY projects. Projects 2 and 3 are linked in that the eyepiece will have narrow usable field of view, and hence will benefit from the equatorial table.
1. Digital setting circles: I bought a bluetooth-based module that can communicate with encoders. Unfortunately, I can't get the magnetic encoder to work with it. I think an oscilloscope might be needed to figure it out. So I may just need to save up for two optical encoders (360 cpr, and then attached via a 1:4 timing pulley setup).
2. Equatorial table: I had routed the sectors, but it turns out that I had miscalculated the center of mass of the telescope, so the cut radii weren't good. I've been procrastinating recutting them. Need to get back to that.
3. Hastings triplet eyepiece: Today I ordered a super-cheap (about $1.80 shipped) ebay 30X triplet loupe. I think it should be a 8.3mm Hastings triplet. If it works, I hope to drill out a 1.25" wood dowel and mount it inside as a nice planetary 8.3mm eyepiece. If it works really well, I might try to sell them for $15-20 each.
4. Laser collimator: This is for a friend. I still need to print and cut out a collimation target, and then collimate the collimator.