So, we made an microplate spectrophotometer. This was our first proper build and was the final-year undergraduate project of two excellent students: Peter Elphick and Ed Tye. They managed to build this working 96-well plate reader from scratch in 6 weeks, with no previous experience. Pete focussed on building a motorised x-y table for the plate reader part, and Ed did the absorbance reading and the data logging. The finished machine worked (!), although it does take 75 mins to read a plate. You can see the full details and step-by-step instructions here.